Dittel FSG 90 PC Operator's Manual

FCC ID:
BVYFSG90

FAA: TSO C37d
TSO C38d

No. LBA.O.10.911/98 JTSO

replaced by:

ETSO: EASA.21O.1305
DFS-No.: B-7850/97

FSG 90 PC

Dual Mode VHF/AM

FIXED/PORTABLE/MOBILE

AIRBAND TRANSCEIVER

OPERATOR'S MANUAL

Before operating the Transceiver, please read

this manual thoroughly!

Please observe the Safety Information!

Keep for further use!

Date of Issue May 2010
Document no.: BA 154.90-EN Article no. D10075

Dittel Messtechnik GmbH

Avionics Division

Erpftinger Straße 36 86899 Landsberg Germany

Telephone [phone] Fax [phone]

E-Mail: [email protected] Internet: www.dittel.com

Dittel Messtechnik GmbH is certified to DIN EN ISO 9001:2000 and DIN EN ISO 14001:2005. It is an accredited manufacturer of aeronautical equipment

DE.21G.0100, maintenance facility DE.145.0245, and development facility ETSO-2C37e/ETSO-2C38e.

e1

03 5042

KBA:

PORTABLE TRANSCEIVER FSG 90PC
Operator's Manual

2

DITTEL  D10075 May 2010

Copyright - Service

Copyright 2010

Dittel Messtechnik GmbH

All rights reserved. This document contains proprietary information and such
information may not be disclosed to others for any purpose nor used for
manufacturing purposes without prior written permission of the manufacturer
Dittel Messtechnik GmbH, 86899 Landsberg am Lech, Germany.
In this document no mention is made of patents, trademark rights, or other
proprietary rights which may attach to certain words or entries. The absence
of such mention, however, in no way implies that the words or entries in
question are exempt from such rights.

Service Information

Should any unusual problem arise or further information be desired, please
contact your nearest DITTEL representative or the Dittel Messtechnik
GmbH, Avionics Division, Erpftinger Strasse 36, 86899 Landsberg,
Germany.

The information in this Operator's Manual does not profess to include all the details of
design, production, or variation of the equipment, or to cover all the possible
contingencies which may arise during operation or maintenance. We welcome your
comments concerning this Manual. Although every effort has been made to keep it
free of errors, some may occur. When reporting a specific problem, please describe it
briefly and include the Operator's Manual article number, paragraph or figure
number, and the page number.

Send your comments to Publications Department
Dittel Messtechnik GmbH
Erpftinger Strasse 36
86899 Landsberg am Lech
Germany
or via e-mail to: [email protected]

Subject to technical changes Printed in Germany

PORTABLE TRANSCEIVER FSG 90PC

Safety Information

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Safety Information

Every radio, when transmitting, radiates energy into the atmosphere

that may, under certain conditions, cause the generation of sparks. All
users of our radios should be aware of the following warning:

Do not operate this radio in an explosive atmosphere (petroleum

fuels, solvents, dust, etc.)!

During normal use, the radio will subject you to radio energy

substantially below the level where any kind of harm is reported.

TO ENSURE
PERSONAL SAFETY

Please observe the following simple rules:

Only persons entitled may operate the

FSG 90 PC

!

DO NOT lean over the equipment when opening the cover! If not

properly tightened the spring steel band antenna may bounce out!

DO NOT transmit when the antenna is very close to, or touching,

exposed parts of the body, especially the face and eyes.
DO NOT transmit on a busy channel!
DO NOT transmit in closed vehicles, aircraft or inside buildings

with the spring steel band antenna! This may cause malfunction of

the avionics, trigger the airbag or confuse electronic equipment!

Always operate the radio with a suitable external antenna! Assure

appropriate lightning protection where elevated outdoor antennas

are used.

DO NOT

press the transmit (PTT) key when not actually desiring

to transmit.
DO NOT allow children to play with any radio equipment

containing a transmitter.
DO NOT operate the radio whilst driving. It should also be noticed

that the use of a hand held microphone while driving could

constitute an offence under the Road Traffic Regulations in certain

countries.
DO NOT dispose worn out lead batteries with the household

garbage.
Always switch OFF the radio when plugging or unplugging the

receptacle!
Always switch OFF the radio first when starting an engine or

vehicle!
The FSG 90 PC may be used exclusively for communication on the

airband frequencies.
Unauthorized modifications and changes of the system are

forbidden.
When replacing defective parts use only original spare parts or

standard parts recommended by the manufacturer!

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Safety Information

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DITTEL  D10075 May 2010

Used Symbols

In this manual the following symbols are used:

DANGER!

describes an immediate threatening danger! Failing to observe the
note may cause death or heaviest injuries.

WARNING!

This warning note describes a dangerous high voltage. Failing to
observe the note may cause death or severe injury!

CAUTION!

describes a special note for operation. Failing to observe the note
may cause damage of the transceiver and/or stored data may be
deleted!

IMPORTANT!

describes explanations and other useful hints. Failing to observe
the note may cause degraded performance and/or unsatisfying
operation!

Environmental Protection

After the implementation of the European Directive 2002/96/EU in the
national legal system, the following applies:

Electrical and electronic devices may not be disposed of with
domestic waste. Consumers are obliged by law to return electrical
and electronic devices at the end of their service lives to the public
collecting points set up for this purpose or point of sale. Details to this
are defined by the national law of the respective country. This symbol
on the product, the instruction manual or the package indicates that a
product is subject to these regulations. By recycling, reusing the
materials or other forms of utilizing old devices, you are making an
important contribution to protecting our environment.

Pb

The portable airband transceiver FSG 90 PC

contains a sealed

lead-acid battery (identification "Pb").

In most countries it is illegal to discard a lead-acid battery except

by delivery to a retailer, a distributor, a manufacturer, or a
collection, recycling, or smelting facility approved by the
department.

NEVER dispose worn out lead-acid batteries with the household

garbage.

PORTABLE TRANSCEIVER FSG 90PC

Table of Contents

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Table of Contents

Copyright - Service................................................................2

Safety Information .................................................................3

Table of Contents ..................................................................5

1 General Description ............................................................7

1.1 Introduction.................................................................................................7

1.2 Application & Description of the FSG 90 PC...............................................7

1.3 Scope of Delivery.......................................................................................8

1.4 Operating License......................................................................................7

1.5 System and Type Approval Information.....................................................8

1.6 Optional Accessories................................................................................10

2 Functional Description......................................................11

2.1 Introduction...............................................................................................11

2.2 Operator's Controls and Indicators...........................................................11

3 Set-up Procedure...............................................................19

3.1 Calling SET-UP without password...........................................................20

3.2 Calling SET-UP with password................................................................20

3.3 Interrupt the SET-UP procedure ..............................................................21

3.4 SET-UP procedure...................................................................................21

3.4.1 Adjusting the automatic squelch threshold ............................................. 22

3.4.2 Adjusting the microphone sensitivity....................................................... 22

3.4.3 Adjusting the Intercom volume................................................................ 23

3.4.4 Adjusting the Sidetone volume................................................................ 23

3.4.5 Adjusting the headset volume (receive).................................................. 24

3.4.6 Selecting '25 kHz only' or combined 8.33/25 kHz channel spacing........ 24

3.4.7 Deleting occupied channel memories..................................................... 25

3.4.8 Selecting AF EXTERNAL (ON/OFF)....................................................... 25

3.4.9 Selecting 'CHANNEL MODE ONLY' or 'NO RESTRICTION'.................. 26

3.4.10 Selecting 'TX disabled' during receive (ON/OFF) ................................... 26

3.4.11 Service (ON/OFF) ...................................................................................27

3.4.12 Optional module (ON/OFF)..................................................................... 27

3.4.13 Entering a password................................................................................ 27

3.4.14 Reset....................................................................................................... 28

4 Operation............................................................................29

4.1 Introduction...............................................................................................29

4.2 Battery Check...........................................................................................29

4.3 Battery Charging ......................................................................................30

4.4 Antenna - Antenna Jack SO 239..............................................................31

4.5 Microphone...............................................................................................31

4.6 Switching ON - Selecting Frequency/Channel Name - Volume...............32

4.7 Receive (Listen) Operation ......................................................................34

4.8 Transmit (Talk) Operation ........................................................................34

4.9 Storing a new Frequency/Channel Name................................................36

4.10 Recall of stored frequencies/channel names:..........................................36

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Table of Contents

4.11 Lighting the Frequency Display...............................................................37

4.12 Turning OFF the radio.............................................................................37

4.13 External Power Supply............................................................................37

4.14 Removing & Installing the Transceiver....................................................37

4.15 Battery Operating Times ......................................................................... 38

4.16 Siting........................................................................................................38

4.17 Base Operation........................................................................................38

4.18 Functional Checks................................................................................... 39

5 ICAO Frequency / Channel Name Assignment in the

combined 8.33 kHz / 25 kHz Operation ........................... 40

6 Technical Summary FSG 90 PC........................................ 41

6.1 General.................................................................................................... 41

6.2 Approvals.................................................................................................42

6.3 Detailed Receiver Characteristics...........................................................42

6.4 Detailed Transmitter Characteristics.......................................................44

6.5 Environmental Performance Classification .............................................45

Certificates ........................................................................ 49

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1 General Description

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Section 1 General Description

1.1 Introduction

This operator's manual contains operating instructions for the fixed/
portable/ mobile VHF/AM Airband Transceiver FSG 90 PC of
Dittel Messtechnik GmbH, 86899 Landsberg am Lech, Germany.

1.2 Application & Description of the FSG 90 PC

The portable VHF/AM Airband Transceiver FSG 90 PC allows
independent operation as an airborne or ground radio. Stationary,
portable or mobile applications are possible. It consists of a portable
case PC 90 and a Dual Mode VHF/AM COM Transceiver FSG 90 or
FSG 90-H1, which can be simply inserted and positioned.
This radio is working within the airband frequency range of 118.000
MHz to 136.975 MHz in either combined 8.33 kHz/25 kHz increments
(2,278 channels) or '25 kHz only' increments (760 channels). The
operating mode is Simplex, i.e. transmitting or receiving only in turns
(two way communication). The RF output power of the radio FSG 90
is 6 Watt into 50 Ohms at 13.8 Vdc, the FSG 90-H1 is transmitting
with 10 Watt into 50 Ohms at a power supply of 14.0 Vdc.
The built-in rechargeable battery allows an independent operation of
up to 85 hours (refer to paragraph 4.15, Battery Operating Times).
Continuous operation is possible by the built-in charging unit or,
externally, from a vehicle or aircraft DC supply. Microphone and
antenna are retractable. External antennas, too, can be
advantageously used.
The unit features 99 non-volatile channel memories each in combined

8.33/25 kHz and in '25 kHz only' operation, 3 display modes, true
Sidetone via headphone, TX and supply voltage indicator at the back­lit display, TX time-out timer (2 minutes), a battery supply test, and a
built-in loudspeaker. The lock-in type carrying handle and a protecting
hood completes our PC 90 unit.

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1 General Description

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1.3 Scope of Delivery

A complete Portable VHF/AM Airband Base Station FSG 90 PC
consists of:

A portable case PC 90 (A/N F10387), containing 12 Vdc/7.2 Ah

lead calcium battery, charger for 115 Vac/230 Vac, 50 - 60 Hz, DC
supply indicator, DC supply socket, microphone socket, antenna
socket, loudspeaker, Snap-On cover - fits on top or bottom, and a

Operator's Manual.
a Dual Mode VHF/AM COM Transceiver FSG 90 or FSG 90-H1.
a suitable, vertically polarized VHF airband antenna, frequency

range minimum 118 to 137 MHz, 50 Ohm, e.g., spring steel band

antenna A/N F10345, and
a microphone, e.g., hand-hold dynamic microphone with PTT-

switch A/N F10041.

When operating on 24 Vdc sources a suitable 24 Vdc/12 Vdc
Converter of at least 4 Amps must be used!

1.4 Operating License

IMPORTANT!

Ground operation always requires an individual

operating license. Depending on national regulations,

such license must be applied for at appropriate National

Authorities, using suitable application forms.

1.5 System and Type Approval Information

The Dual Mode VHF/AM Airband Transceiver

FSG 90(X) complies for
both the 8.33 kHz/25 kHz as well as 25 kHz channel spacing with all
applicable National and International Type Approval requirements, for
any airborne and ground operation.

JTSO Authorization No. LBA.O.10.911/98 JTSO (LBA Luftfahrt-

Bundesamt) based on *EUROCAE ED-23B Airborne requirement
is met besides 8.33 kHz requirements also for the 25 kHz ONLY
channel spacing. This JTSO Authorisation was replaced by ETSO
Authorization EASA.21O.1305 in July 2009.
This also includes Immunity according to ICAO ANNEX 10 against
FM Broadcast Interference.
This also includes fulfillment of specific audio filtering required in
areas with CLIMAX operation in 25 kHz channel spacing.
* Associated EUROCAE ED-14C / RTCA DO-160C Environmental
requirements.
* Associated EUROCAE ED-12B Software requirements based on
ED-23B.

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1 General Description

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Reg TP No. A132937J, stringent German Type Approval

requirements Reg TP 321 ZV 034 (airborne) and Reg TP 321 ZV
039 (ground).

DFS (Deutsche Flugsicherung) No. B-7850/97 (ground) German

Type Approval requirements.

BZT No. B132705J, CE Conformity,

* Associated with DIN/ISO 7637-1 DC supply in 12 V vehicle.
FCC Compliance with Part 15 (receiver) and Part 87 (transmitter).
EC-Type-Approval of a type of component with regard to Directive

72/245/EEC, as last amended by Directive 2006/28/EG.

IMPORTANT!

For the first time after one year, then every 2nd year, ground

applications using 8.33 kHz channel spacing require checking

of the high precision reference frequency (tolerance less than

± 1.5 ppm) and recalibration, if necessary!
Every 4th year, airborne applications using 8.33 kHz channel

spacing require checking of the high precision reference

frequency (tolerance less than ± 5 ppm) and recalibration, if

necessary!
All applications in the 25 kHz channel spacing require no

recalibration (frequency accuracy tolerance less than ± 20

ppm).
All tolerances include the full operating temperature range of

-20°C ... +55°C / -4°F ... +131°F.

Checking and recalibration must be performed by the

equipment manufacturer or through authorized and approved

avionics services. This requires use of specified test

equipment as well as applicable test procedures (software)

released by the manufacturer.

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1 General Description

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1.6 Optional Accessories

Article-No. Description

F10345 Spring steel band antenna, swivel type, PL-259 connector

W00043 Magnet mount vehicle rod antenna, incl. 4 m/13 ft cable, and UHF

connector PL-259

W00066 Mobile Whip Antenna with shock spring, 118 - 137 MHz, incl. 5 m/

16.5 ft cable, w/out UHF connector PL-259

F10314 Balloon antenna, 118-137 MHz, weatherproof - flexible - high

efficiency, including 3 m/10 ft cable and UHF connector PL-259

W00013 Roof mounted weatherproof folded-top fiberglass antenna, UHF-

connector, anti static, 1" mount
E57328 UHF antenna connector PL-259 for antenna cable RG-213/U
B01116 Antenna cable RG-213/U, low loss, for roof antenna W00013,

please state length (in meters)

F10041 Dyn. hand-held microphone incl. PTT-switch, coiled cord and

5-pole plug

F10042 Dyn. hand-microphone/loudspeaker with PTT-switch, coiled cord

and 5-pole plug

F10125 Inline PTT-switch (U-94 A/U), coiled cord, 5-pole plug, to connect

headset W00048, clip allows attaching to clothing

W00048 Dynamic headset with PJ-plug, fits inline PTT-switch

F10393 Car Cable, coiled cord, incl. 3-pole plug to supply station from

12 Vdc car battery (fits cigarette lighter socket, minus = ground)

S20000 Converter 24 Vdc to 12 Vdc, 4 Amps, to operate the base Station

from 24 Vdc sources like truck batteries etc.

E61933 3-pole twist-lock DIN Connector, to fit into "12 V DC EXT." socket of

carrying case PC 90.

E08834 5-pole twist-lock DIN Connector, to fit into "MIC" socket of carrying

case PC 90.

E58411 Sealed lead accumulator, nominal 7.2 Ah, 12 VDC

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2 Functional Description

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Section 2 Functional Description

2.1 Introduction

This section includes a functional description of each switch, push
button, knob, socket, indicator and display located on the front or rear
panel of the FSG 90 PC, together with operating instructions.
After removing the Snap-On cover all controls to operate the
transceiver are accessible. The cover can be pushed onto the rear
side of the carrying case.

DANGER!

DO NOT lean over the equipment when opening the cover! If

not properly tightened the spring steel band antenna may
bounce out!

2.2 Operator's Controls and Indicators

A front and back view of the FSG 90 PC is given on the last page of
this manual. Please fold out the back flap when reading the operating
instructions. Each position number of a control, knob, switch, etc.,
corresponds to the number of control, knob, switch, etc., given below.

1

ON/OFF-VOL Rotary step switch

To turn ON the radio rotate the ON/OFF-VOL knob clockwise from the
OFF position (dot).

When power is activated

all segments of the display are momentarily visible,
he automatic squelch is activated
the display shows the frequency/ channel name in that operating

mode, which was used before last turning OFF.
Rotating the ON/OFF-VOL knob clockwise increases - turning counter­clockwise decreases the audio volume audible in the built-in
loudspeaker (Receive only) or connected headphone (TX Sidetone
and Receive).
To turn OFF the radio rotate the ON/OFF-VOL knob fully counterclock­wise (ccw) to the OFF position (dot). Blank display.

2

STO

Push button
With the VHF/AM COM Transceiver FSG 90(X), up to 99
frequencies/channel names in each operating mode (combined

8.33/25 kHz mode or '25 kHz only' mode) may be stored in a non­volatile memory. The channel memory numbers (1 99) are user
programmable.

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2

STO

continued

Programming a frequency:

1. Set the frequency or channel name to be stored in the upper line
at the display!

2. Initialize storing by pressing the STO button.

3. The last used channel memory number is displayed in the lower
line.

4. A flashing "CH" shows "ready to store".

5. Select appropriate (new) channel memory number (1 to 99) by
rotating the F/CH knob.

6. On a free channel memory an additional "F" (free) is displayed.

7. To enter the new frequency/channel name press the STO-button.
The frequency/channel name will be stored under the adjusted
channel memory number.

8. A previously stored frequency/ channel name will be overwritten.

9. The last used display mode is displayed.

Programming in the SET-UP mode:
In the SET-UP mode all settings must individually be confirmed by
pressing the STO button. Otherwise the settings are not permanently
stored.

3

SQ (SQUELCH) Push button

After turning ON the radio FSG 90(X) the automatic squelch is always
active.
Momentarily pressing the SQ-Button

puts the radio in the SQ-OFF mode (overrides the automatic

squelch). Basic receiving noise is also audible during standby.
Maximum receiving range. Increased current consumption.

'TX Disabled' is inactive, i.e. transmitting is possible even if the

channel is busy.

Momentarily pressing the SQ-Button once more

puts the radio in the standard display mode, automatic squelch is

active. No receiving noise during standby. Only reception of
signals above SQ threshold to be heard.

When the squelch is active 'TX Disabled' is active, i.e. transmitting

is only possible if the channel is not busy.

Note: For certain purposes 'TX Disabled' may be permanently

switched OFF during SET-UP procedure.

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4

MD

Push button
Repeatedly pressing the MD (mode)-button alters the display mode
and display respectively:
Use/STBY Mode: upper line USE frequency
lower line STBY frequency
Channel Mode: upper line USE frequency
lower line channel memory number
Direct Tune Mode: upper line USE frequency
lower line blank

5

TRANSFER Push button

Momentarily pressing the Transfer button

while in CHANNEL or DIRECT TUNE mode will return the radio to

USE/STBY mode, or

while in USE/STBY mode the last USE frequency will become the

new STBY frequency and the last STBY frequency will become the
new USE frequency, or

while in the SET-UP mode will return the radio to the operation

mode used before without power down. Only programmed settings
stored previously by pressing the STO-button will be active.

6

F/CH

Rotary control and push-button = dual function
Momentarily pressing the F/CH knob

while in the USE/STBY or DIRECT TUNE mode changes the

access from kHz to MHz or vice versa.

If there is no activity for 30 seconds the F/CH knob will return to

the kHz access.

While in the CHANNEL mode pressing the F/CH knob is without

function.

Rotating the F/CH knob

while in the USE/STBY mode will increment or decrement the MHz

or kHz portion of the STBY frequency with rollover at each band
edge,

while in the CHANNEL mode changes the channel memory

number and corresponding frequency. Only channel numbers
which were programmed before will appear,

while in the DIRECT TUNE mode will increment or decrement the

MHz or kHz portion of the USE frequency with rollover at each
band edge.

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Frequency Display 5-digit or 6-digit liquid crystal display (LCD), two lines, may be back-lit

by pressing the "Test" button.

IMPORTANT!

When the FSG 90(X)

is operating in the combined 8.33/25 kHz

mode the channel name is displayed with 6 digits.

When the FSG 90(X) is operating in the '25 kHz only' mode the

frequency is displayed with 5 digits.

Display of frequency and channel name corresponds to ICAO

recommendations!

Examples:

Transceiver operates in the combined

8.33/25 kHz mode (6-digit display)

Upper line: USE channel name (display 135.090 = 135.0916

MHz transmit and receive frequency)

Lower line: STBY channel name (display 118.065 = 118.0666

MHz transmit and receive frequency)
Supply indicator: 3 segments: 12.7 Vdc, supply OK
TX indicator: OFF, radio receives.

Transceiver operates in the '25 kHz only' mode
(5-digit display)
Upper line: USE frequency (display

135.87 = 135.875 MHz transmit and receive

frequency)
Lower line: STBY frequency (display 118.02 =

118.025 MHz transmit and receive frequency)
Supply indicator: 3 segments: 12.7 Vdc, supply OK
TX indicator: OFF, radio receives.

Transceiver operates in the combined

8.33/25 kHz mode (6-digit display)
Upper line: USE channel name (display 127.460 = 127.4583

MHz transmit and receive frequency)

Lower line: Channel memory number (19) associated with the

above USE channel name
Supply indicator: 2 segments: 12.0 Vdc, battery ½ charged
TX indicator: ON, radio transmits.

Transceiver operates in the '25 kHz only' mode (5-digit display)
Upper line: USE frequency (display 124.77 = 124.775 MHz

transmit and receive frequency)
Lower line: Channel memory number (75) associated with the

above USE frequency
Supply indicator: 2 segments: 12.0 Vdc, battery ½ charged
TX indicator: ON

, radio transmits.

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STO button was pressed.
Upper line: Channel name to be stored
Lower line: Free channel memory number 07 (CH is flashing)
After pressing the STO button once more the channel name 121.875
(= 121.875 MHz) will be stored in the channel memory 07.
The last used display mode is displayed.

STO button was pressed.
Upper line: Channel name to be stored
Lower line: Channel memory number 17 (CH is flashing)
After pressing the STO button once more the channel name 121.375
(= 121.375 MHz) will be stored in the channel memory 17. A
previously stored channel name will be overwritten.
The last used display mode is displayed.

8

DC supply

Indicator

LED indicator to check the capacity of the built-in battery or external
DC supply.
When the red push-button is pressed

at least 3 LEDs should light up to indicate sufficient capacity of the

battery or DC supply.

and only two or less LEDs light up either the battery should be

recharged or the station should be powered by an external DC
source of sufficient capacity (e.g. vehicle battery).

the display of the transceiver is back-lit.

9

Loudspeaker 8 Ohm, 3 Watt, tropics-proof.

To make received signals audible; volume adjustable with

ON/OFF-VOL

control 1. Is not switched OFF when using a headset connected to

13

.

10

DANGER!

NEVER TRANSMIT inside airplanes, vehicles or
buildings without external antenna! Otherwise
electronic equipment can be interfered.

Antenna socket

CAUTION!

NEVER operate the radio without any antenna!

UHF type antenna socket SO 239, 50 Ohms.

Any 50 Ohms antenna with UHF type cable plug PL-259 and a
frequency range of 118 137 MHz minimum may be connected to
this antenna jack.

For portable use in the open field we recommend our spring steel

band antenna.
In aircraft or ground vehicles, an external antenna must be used.
For long range operation a base station folded top antenna,

grounded for lightning protection, is recommended.

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11

Antenna

compartment

When using our spring steel band antenna, A/N F10345, this antenna
can be kept there without disconnecting.

12

Microphone

compartment

When using our hand-hold microphone with built-in push-to-talk
switch, A/N F10041, this microphone can be kept there without
disconnecting.

13

Microphone socket

(1)

(2) (3) (4)

(5)

5-pole twist-lock DIN socket to connect microphone, headphone and
PTT-switch.

Mating plug: article No. E08834
Any dynamic microphone (200 to 600 Ohms), headphone (ca.
300 Ohms), push-to-talk key, or dynamic type head-set can be
connected to this socket. Wiring refer to Section 6, "90 PC, Circuit
Diagram".

(1) Common Ground (PTT switch/Headphone)
(2) Dynamic microphone
(3) Headphone
(4) Microphone Ground
(5) Push-to-talk key

14

NEW SOCKET!

External Supply

(1) (3)

3-pole twist-lock DIN socket to supply the radio by external 12 Vdc
sources.
Mating plug: article No. E61933
The capacity of the built-in battery may not be adequate due to
frequent transmitting operations or very long operating times without
possibility to recharge. Radio operation can be enabled through an
external 12 Vdc power source such as an automobile battery via our
Car Cable F10393 which fits into the cigarette lighter socket of most
cars (minus on common ground).

(1) Plus 12 Vdc
(3) Minus 12 Vdc (Ground)

15

Fixing screws

Three cross recessed screws, M 3 8, to fix the transceiver in the
case.

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Rear panel:

WARNING!

Risk of electric shock!
DO NOT OPEN!

16

Mains cable

compartment

WARNING!

Changing the plug may only carried out by a

trained specialist -electrician-! Please observe
national safety regulations!

Contains the mains cable of the built-in battery charger, length of

cable: ca. 1.2 m.

17

WARNING!

Always turn OFF radio and disconnect mains plug

when replacing fuses!

DC Fuse

Fuse to protect the transceiver in case of heavy current.
Contains 1 glass cartridge fuse, 5 20 mm, 6,3 Amps, time-lag.

18

WARNING!

Always turn OFF radio and disconnect mains plug

when replacing fuses!

Mains Fuses

Fuses to protect the charging unit.
Contains 1 glass cartridge fuse each, 5 20 mm, 0.04 A time-lag.
The fuses fit for both mains voltages, no change required.

19

WARNING!

Always turn OFF radio and disconnect mains plug

when changing the mains voltage!

Mains selector

switch

The charging unit is factory set to 230 Vac mains voltage (position

230).

When 110 115 Vac mains is available, set the mains selector

switch by means of a coin or screwdriver to the 115 position.

20

CAUTION!

Always turn OFF the radio first when removing

from its case!

Ejector knob

After removing three cross-recessed screws 15 and the matching
plate on the front, the transceiver may be dismounted from its case by

pressing this ejector knob.

PORTABLE TRANSCEIVER FSG 90PC
2 Functional Description

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DITTEL  D10075 May 2010

PORTABLE TRANSCEIVER FSG 90PC

3 Set-up Procedure

May 2010

DITTEL  D10075

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Section 3 Set-up Procedure

This section contains a description of the Set-Up procedure to be
carried out only once by an experienced avionics technician. To
carry out the Set-Up procedure the radio must be installed into the
Carrying Case and ready to use.

DANGER!

NEVER carry out a SET-UP during flight, important missions

or applications!

During SET-UP procedure the radio can neither receive nor

transmit!

IMPORTANT!

The

FSG 90(X)

is factory pre-set for check and testing purposes.
To achieve maximum performance it is therefore absolutely
necessary to optimize the radio and to adapt the accessories used.

Set-up should be performed only by an experienced technician.
To carry out the set-up the radio must be ready for operation

(antenna connected, power supply OK, operational microphone).

If headsets are used turn volume control to maximum, if

applicable.

All frequencies, channel names, channel memory numbers etc.,

shown in the following illustrations, are examples!

The following settings can be selected or adjusted (order):

1.

Adjusting the automatic squelch threshold

2.

Adjusting the microphone sensitivity

3.

Adjusting the Intercom volume (headset)

4.

Adjusting the Transmit Sidetone volume (headset)

5.

Adjusting the headset volume (during Receive
independent from speaker volume)

6.

Selecting '25 kHz only' channel spacing or combined

8.33/25 kHz channel spacing. Confirmation with STO
starts new mode at once.

7.

Deleting occupied channel memories (one after the other)

8.

Selecting AF External via loudspeaker ON = 1 or OFF =

0.

9.

Selecting 'CHANNEL MODE' only = 1 or 'FREE
FREQUENCY SELECTION' = 0

PORTABLE TRANSCEIVER FSG 90PC
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DITTEL  D10075 May 2010

10.

Selecting 'TX disabled' ON = 1 or OFF = 0 during receive

11.

Service, ON = 1 or OFF = 0

12.

Optional module, ON = 1 or OFF = 0

13.

Entering a password: protects against unauthorized
changes of the radio parameters.

3.1 Calling SET-UP without password

Calling the SET-UP procedure without password is possible:

a) at factory-new radios FSG 90(X),

or

b) at radios which are reset to a factory basic setting (refer to §

3.4.14, RESET), or

c) at radios which are not protected by a password against

unauthorized changes of the set-up adjustments.

Turn OFF the radio (ON/OFF-VOL knob fully ccw).
PRESS AND HOLD both MD and STO buttons, then turn ON

the radio (rotate ON/OFF-VOL knob clockwise, approximately mid
position).

All segments of the display appear for a short moment then the

display gets blank.

Release the buttons.

After releasing the buttons the display shows in the upper line

alternately »FSG90« and »SET-UP«.

If there is no activity for 60 seconds the radio will return to the

mode used before.

Momentarily pressing the MD button once will open the set-up

menu to adjust the squelch threshold.

Repeatedly pressing the MD button will open all other set-up

menus in the order described before.

3.2 Calling SET-UP with password

Calling the SET-UP procedure with password must be carried out at
radios which are protected by a password against unauthorized
changes of the set-up adjustments.

Turn OFF the radio (ON/OFF-VOL knob fully ccw).
PRESS AND HOLD both MD and STO buttons, then turn ON

the radio (rotate ON/OFF-VOL knob clockwise, approximately mid
position).

All segments of the display appear for a short moment then the

display gets blank.

PORTABLE TRANSCEIVER FSG 90PC

3 Set-up Procedure

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Release the buttons.
After releasing the buttons the display shows in the upper line

alternately »FSG90« and »SET-UP«, in the lower line 5 dashes.

If there is no activity for 60 seconds the radio will return to the

mode used before.

With the F/CH knob set the first digit of your password (the first

dash changes to digit). Confirm the first digit by pressing the F/CH
knob. The second digit is ready to be adjusted.

With the F/CH knob set the second digit of your password (the

second dash changes to digit). Confirm the second digit by

pressing the F/CH knob.
Continue till all five digits of your password are entered.
Confirm the last digit input by pressing the STO button. This will

open the set-up menu to adjust the squelch threshold. Repeatedly

pressing the MD button will open all other set-up menus in the

order described before.
Entering a wrong password will return the set-up to the initial

status (5 dashes).
After the fourth attempt to open the set-up with a wrong password

the radio returns to the operation mode used before trying to open

the set-up. The FSG 90(X) is operational.

3.3 Interrupt the SET-UP procedure

The SET-UP procedure may be interrupted any time:

Usually by turning OFF the power (ON/OFF-VOL knob fully ccw). All

changed and individually stored adjustments (by pressing the

STO button) are permanently stored and effective after turning

ON the radio again.
or by pressing the Transfer button ( ). The radio returns to the

operation mode used before. All changed and individually stored

adjustments up to now (by pressing the STO button) are

permanently stored and effective.

3.4 SET-UP procedure

IMPORTANT!

The settings can be done in any order!
Repeatedly pressing the MD button opens the menus step by step.
Only settings confirmed by finally pressing the STO key are

permanently stored and effective.

When pressing the STO button the upper segment of the Onboard

PORTABLE TRANSCEIVER FSG 90PC
3 Set-up Procedure

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DITTEL  D10075 May 2010

supply indicator will light up to confirm storing visually.

3.4.1 Adjusting the automatic squelch threshold

The display shows in the upper line alternately »SET« and »SQUEL«,
in the lower line »LO«, »MED1«, »MED2« or »HI«.

Adjust by rotating the F/CH knob the squelch threshold as

required. The lower line shows:

LO

ca. 1.0 µV / -107 dBm (Standard setting)

MED1 ca. 2.5 µV / -99 dBm
MED2 ca. 5.0 µV / -93 dBm
HI ca. 8.0 µV / -89 dBm (this setting exceeds the required

minimum sensitivity; adjust only for test purposes at very
strong interference levels!)

Confirm your adjustment by pressing the STO button!
If you want to carry on with the SET-UP procedure press once or

repeatedly the MD button till the desired menu appears.

3.4.2 Adjusting the microphone sensitivity

IMPORTANT!

This adjustment is important particularly when FSG 90 PC

is used
in noisy environment like turboprop airplanes or vehicles:
Turn your radio OFF (

ON/OFF-VOL knob fully ccw).
The FSG 90(X) should be turned ON only after engine or motor
start-up.
Select a free frequency/channel name (no communication
audible). Then call the SET-UP procedure.

During this adjustment the transmitter is in operation. Carry out

adjustment quickly!

Up to two microphones of the same type may be connected

parallel to the MIC input (dynamic type).

Parallel operated microphones must have the same specifications.
This adjustment has to be repeated when changing microphones

(brand, type or number)

The display shows in the upper line alternately »SET« and »MICRO«.

ONLY FOR ENGINE POWERED AIRPLANES AND VEHICLES:

RUN THE ENGINE IN IDLE (because of noise level).

Press and hold the PTT key. Talk in a loud, clear voice with the

PORTABLE TRANSCEIVER FSG 90PC

3 Set-up Procedure

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DITTEL  D10075

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microphone one or two inches from your lips.

While talking the microphone level is measured. By turning the

F/CH knob left or right set the upper dash line to three to four
segments (the lower dash line shows only informative the actual

range).
Release the PTT key and stop talking.
RUN THE ENGINE IN CRUISING SPEED.
Press and hold the PTT key for at least 5 seconds, do not talk!

The upper dash line should show not more than one segment.
If the display shows more than one segment the mic input is too

sensitive. Repeat adjustment with less sensitivity (only two to three
segments visible when talking).

Confirm your adjustment by pressing the STO button!
If you want to carry on with the SET-UP procedure press once or

repeatedly the MD button till the desired menu appears.

3.4.3 Adjusting the Intercom volume

NOT APPLICABLE WHEN THE

FSG 90(X)

IS OPERATED IN A

CARRYING CASE

PC 90

!

3.4.4 Adjusting the Sidetone volume

IMPORTANT!

Sidetone audible during transmit is only possible via headphones

(if applicable set maximum volume at the headset)

During this adjustment the transmitter is in operation. Carry out

adjustment quickly!
The microphone(s) sensitivity has to be adjusted properly (refer to

paragraph 3.4.2)

The display shows in the upper line alternately »SET« and »SIDE«.

Press and hold PTT key, Talk in a loud, clear voice with the

microphone one or two inches from your lips.
While talking adjust with the F/CH knob a convenient volume in

your headphone (the segments show the actual range). If more

than four segments are shown overmodulation occurs.
Release the PTT key.
Confirm your adjustment by pressing the STO button!
If you want to carry on with the SET-UP procedure press once or

repeatedly the MD

button till the desired menu appears.

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DITTEL  D10075 May 2010

3.4.5 Adjusting the headset volume (receive)

IMPORTANT!

Receiving is possible via built-in loudspeaker and headphone.
First set with the ON/OFF-VOL knob loudspeaker volume to a

convenient level, and then adjust with the set-up procedure a
suitable headphone volume.

The display shows in the upper line alternately »SET« and
»PHONE«.

With the speaker noise or communication is audible.

With the ON/OFF-VOL knob set speaker output to a convenient

level, leave ON/OFF-VOL knob as it is.
Put on headphone.
By rotating the F/CH knob adjust headphone level to a suitable

volume. The dashes show the range.
If the adjustment range is not sufficient increase or decrease with

the ON/OFF-VOL knob.
Confirm your adjustment by pressing the STO button!
If you want to carry on with the SET-UP procedure press once or

repeatedly the MD button till the desired menu appears.

3.4.6 Selecting '25 kHz only' or combined 8.33/25 kHz channel spacing

The display shows flashing in the upper line »SET«,
in the lower line either »25« or »8.33«.

By rotating the F/CH knob select the required channel spacing:

»25« = '25 kHz only' channel spacing

»8.33« = combined 8.33 and 25 kHz channel spacing.

IMPORTANT!

Confirm the new channel spacing by pressing the STO button! The

selected channel spacing becomes active and simultaneously
SET-UP procedure will automatically be finished.
The radio returns to the last used display mode and the settings
confirmed with the STO button became effective.

If you want to carry on with the SET-UP procedure call again SET-

UP. Press once or repeatedly the MD button till the required menu
appears.

PORTABLE TRANSCEIVER FSG 90PC

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3.4.7 Deleting occupied channel memories

IMPORTANT!

Only channel memory numbers from 5 99 can be deleted.

Channel memories 1 to 4 may only be overwritten.

On an occupied channel memory the channel memory number is

displayed in the upper line, the associated frequency/channel
name in the lower line.

On a free channel memory the channel memory number is

displayed in the upper line, the lower line shows »FREE«.

EXAMPLE:
The display shows in the upper line alternately »CLR 05« and

»CH 05« and in the lower line the associated frequency.

EXAMPLE: Channel memory number »39« (with the channel name

132.765) should be deleted.

By rotating the F/CH knob adjust the channel memory number

»39« at the display.

If this channel memory should really be deleted confirm by pressing
the STO button. In the lower line the frequency/channel name
disappears, it appears »FREE«.

If further memory channels should be deleted adjust with the

F/CH knob the channel memory number concerned and delete
each by pressing the STO button.

If you want to carry on with the SET-UP procedure press once or

repeatedly the MD button till the desired menu appears.

3.4.8 Selecting AF EXTERNAL (ON/OFF)

NOT APPLICABLE IF FSG 90(X) IS OPERATED IN A CARRYING
CASE PC 90!

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3.4.9 Selecting 'CHANNEL MODE ONLY' or 'NO RESTRICTION'

IMPORTANT!

For certain applications (usually ground operation only) selecting all

frequencies by the operator may be restricted. Then transmitting
and receiving is only possible in the CHANNEL MODE, pre­programmed before by authorized personnel.

The display shows in the upper line alternately »SET« and »FREQ«,
in the lower line »0« or »1«.

Adjust by rotating the F/CH knob lower line to "0" or "1".

0 = Standard operation, no restriction.
1 = CHANNEL MODE only, no other frequencies/channel

names adjustable by operator.
Confirm your adjustment by pressing the STO button!
Carry on with the SET-UP procedure by pressing once or

repeatedly the MD button till the desired menu appears.

3.4.10 Selecting 'TX disabled' during receive (ON/OFF)

IMPORTANT!

Whenever 'TX disabled' is ON and squelch is ON transmitting is
disabled as long as the frequency/channel name is busy
(communication audible). In addition TX Sidetone is OFF.

Whenever the squelch is OFF the 'TX disabled' is OFF and

transmitting is possible even on a busy channel.

The display shows in the upper line alternately »SET« and »BLOC«,
in the lower line »0« or »1«.

Adjust by rotating the F/CH knob the lower line to »0« or »1«.

0 = 'TX disabled' is OFF. Transmitting is always possible, even

on a busy channel.

1 = 'TX disabled' is ON. With squelch ON transmitting is only

possible on a free channel.
Confirm your adjustment by pressing the STO button!
Carry on with the SET-UP procedure by pressing once or

repeatedly the MD

button till the desired menu appears.

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3 Set-up Procedure

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3.4.11 Service (ON/OFF)

IMPORTANT!

For approved Avionics Shops only! No regular operation in

this mode!

The display shows in the upper line alternately »SET« and »SERV«,
in the lower line »0«.
0 = STANDARD MODE, Service OFF.

If required, confirm adjustment by pressing the STO button!
Carry on with the SET-UP procedure by pressing the MD button.

3.4.12 Optional module (ON/OFF)

IMPORTANT!

In this radio without function.

The display shows in the upper line alternately »SET« and »OPTI«, in
the lower line »0«.

0 = STANDARD MODE, Optional module OFF.

Carry on with the SET-UP procedure by pressing the MD button.

3.4.13 Entering a password

IMPORTANT!

When the SET-UP of your radio is protected by a password it

cannot be changed by any unauthorized persons without
knowledge of the password.

Your password consists of five digits!

The display shows in the upper line alternately »SET« and »PASS«,
in the lower line »00000«.
If you don't want to enter a password and your SET-UP procedure is
finished leave the SET-UP menu by pressing the TRANSFER ( )
button, or turn OFF the radio (ON/OFF-VOL knob).
If you want to enter a password proceed as follows:

Rotate the F/CH knob. Adjust the first digit (0 . 9). Confirm the

first digit by pressing the F/CH knob.

Adjust the second digit of your password by rotating the F/CH

knob. Confirm again by pressing the F/CH knob.

The third digit is ready now. Continue as described above for the

third, fourth and fifth digit.
Make sure the complete password corresponds to your idea.
Confirm the password by pressing the STO button!

From now on a new SET-UP may be called only after entering
the password first!

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DITTEL  D10075 May 2010

3.4.14 Reset

CAUTION!
Every RESET to the factory setting

deletes all your pre-set memory channels 5 to 99 (in both

8.33/25 kHz and 25 kHz only mode)! Memory channels 1 - 4 get
programmed with 118.00 or 118.005 respectively

deletes your password!
delete all your individual SET-UP adjustments!

To reset all adjustments proceed as follows:

Turn OFF the radio (ON/OFF-VOL knob fully ccw).
PRESS AND HOLD simultaneously the buttons MD, STO and

SQ, then turn ON the radio (rotate ON/OFF-VOL knob clockwise,
approximately mid position).

All segments of the display appear for a short moment then the

display gets blank.

Release the buttons.

After releasing the three buttons the display shows in the upper line
alternately »SET« and »RESET«, in the lower line »0«.

If there is no activity for 60 seconds the radio will return to the mode
used before.

With the F/CH knob set lower line to "1".

Confirm RESET by pressing the STO button.

The upper segment of the Onboard Supply Indicator will light up
momentarily.

The VHF radio FSG 90(X) is now operable in the factory setting.

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Section 4 Operation

4.1 Introduction

This section contains a basic operation procedure for the FSG 90 PC
portable airband transceiver. This instruction is only applicable for a
radio which is already optimized by the Set-Up procedure (refer to
Section 3, SET-UP PROCEDURE).

DANGER!

DO NOT OPERATE THIS RADIO IN AN EXPLOSIVE ATMOS-

PHERE (PETROLEUM FUELS, SOLVENTS, DUST, ETC.).

DO NOT lean over the equipment when opening the cover! If not

properly tightened the spring steel band antenna may bounce out!

After removing the Snap-On cover all controls to operate the

transceiver are accessible. The cover can be pushed onto the rear
side of the carrying case.

A front and back view of the FSG 90 PC is given on the last page of
this manual. Please fold out the back flap when reading the operation
instructions.

4.2 Battery Check

 If applicable, disconnect built-in charger from mains first, before

checking the battery supply.

 Press the red test button of the battery indicator

8

.

 The LED indicators 8 will light up.

5 LEDs ON = battery fully charged, supply OK!
3 to 4 LEDs ON = battery partially discharged; reduced

operation time when powered only from
the battery.

2 or less LEDs ON = battery discharged. The battery should

be recharged or the radio should be
powered by an external 12 Vdc
source of adequate capacity (e.g.
automobile battery).

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DITTEL  D10075 May 2010

Additionally the supply is permanently monitored when the radio
is switched ON:

3 segments

12.7 Vdc

Battery fully charged

2 segments

12.0 Vdc

Battery charged approx. ½,
reduced operating time

1 segment

11.0 Vdc

Battery almost empty, cease
transmitting!

3 segments flashing 10 - 11 Vdc Emergency operation

Continuous flashing
during STBY

8.59.5 Vdc

Radio will soon switch OFF
itself!

IMPORTANT!

If the

Supply Indicator even blinks continuously in STANDBY mode
it indicates a discharged battery. The radio should then be
switched OFF at once and the battery recharged as soon as
possible.

The battery must always be recharged immediately after an

extensive discharge because this incurs the risk of deterioration
and permanent damage - this risk is increased if a discharged
battery is stored in that state.

4.3 Battery Charging

Charging should be done within the ambient temperature range of

+10°C to +40°C.

First check the line voltage and set it with the voltage selector

switch 19 on the back, if necessary.

Take out the mains cord from its compartment 16 and connect it

to a wall socket.

The transceiver may be operated while charging.
Charging lasts up to 30 hours depending on the state of the

battery.

Overcharging the battery is not possible due to automatic

controlled charging function. For trickle charging or buffer
operation the charger can be left unattended continuously
connected to mains. A fully charged battery can be stored for
several months.

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4.4 Antenna - Antenna Jack SO 239

DANGER!

NEVER TRANSMIT in vehicles, aircraft or inside buildings with

the spring steel band antenna! This may cause malfunction of
the avionics, trigger the airbag or mix-up electronic
equipment! Always operate the radio with a suitable external
antenna!

NEVER OPERATE the radio without any antenna!

The spring steel band antenna (Article-No. F10345), connected to the
SO 239 antenna jack 10, can be replaced by any other 50 Ohm
antenna with UHF type PL-259 cable plug and a frequency range of

118 137 MHz minimum. For long range operation a base station
folded top antenna, grounded for lightning protection, is
recommended. To operate the radio in aircraft or ground vehicles a
suitable external antenna should always be used.

Ensure the plug of your antenna or antenna cable is securely

tightened.

If the spring steel band antenna is used, pull it out of its

compartment 11 and adjust it in a vertical position by tightening
the screwed cap and wing screw.

4.5 Microphone

The hand-held dynamic microphone with push-to-talk switch (Article-

No. F10041) can be replaced by any other dynamic microphone (200
to 600 Ohms) with PTT switch or a head-set for dynamic type
systems with additional PTT switch (mating 5pole plug: Article-No.
E08834, wiring to station, refer to Section 6, Circuit Diagram 90 PC).

Connect microphone; ensure the plug is secured by the twist-lock

cap.

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4.6 Switching ON - Selecting Frequency/Channel Name - Volume

CAUTION!

The FSG 90 PC should be turned on after engine start-up. This

is a simple precaution which helps to protect the solid state
circuitry and extends the operating life of your avionics
equipment.

IMPORTANT!

»Frequency« (25 kHz spacing) and »Channel Name«

(combined 8.33/25 kHz spacing) are ICAO terms!

Frequent transmissions as well as large receiving volume

reduce the operating time when radio is only powered by the
built-in battery!

Turn the radio FSG 90(X) ON by rotating the ON/OFF-VOL knob 1

clockwise. Momentarily all segments of the display are visible.

Last used display mode and frequency are displayed.
A warm-up period for the transmitter is not required. However, at
temperatures of -20°C, the LC display needs approximately one
second until it is fully visible when the frequency or display mode is
changed.

To change the display mode: Push once or twice the MD button

4

.

Selecting the appropriate USE (active) frequency/channel name
depends on display mode:

EXAMPLE:

STANDARD: USE/STBY (Standby) Mode

Upper line: USE/active frequency/channel name
Lower line: Standby frequency/channel name

Selecting another frequency/channel name than indicated:

At the lower line select appropriate kHz portion by rotating F/CH­knob 6. A clockwise rotation will increment the previous frequency
while a counterclockwise rotation will decrement the previous

frequency with rollover at each band edge.
Push F/CH knob 6; this changes the access to MHz.
At the lower line select appropriate MHz portion by rotating F/CH­knob 6. A clockwise rotation will increment the previous frequency
while a counterclockwise rotation will decrement the previous

frequency with rollover at each band edge.
Push the Transfer Button 5.
The last standby frequency/channel name (lower line) will become the

new active frequency/channel name (upper line) and the last active
frequency/ channel name will become the new STBY

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frequency/channel name (lower line).

IMPORTANT!

If there is no activity for 30 seconds the F/CH knob will return

to the kHz access.

EXAMPLE:

Channel Mode:

Upper line: USE/active frequency/channel name
Lower line: Channel memory number, associated

Selecting another frequency/channel name than indicated:

IMPORTANT!

The appropriate operating frequency/channel name must be stored

already in a channel memory (refer to paragraph 4.9, Storing a
new Frequency/ Channel Name).

Select appropriate channel memory number together with the

associated frequency/channel name by rotating the F/CH knob

6

.

EXAMPLE:

Direct tune Mode:

Upper line: USE/active frequency/channel name
Lower line: blank

Selecting another frequency/channel name than indicated:
Select appropriate kHz portion by rotating F/CH-knob 6. A

clockwise rotation will increment the previous frequency while a
counterclockwise rotation will decrement the previous frequency with
rollover at each band edge.

Push F/CH knob 6; this changes the access to MHz.
Select appropriate MHz portion by rotating F/CH-knob. A clockwise

rotation will increment the previous frequency while a counterclock­wise rotation will decrement the previous frequency with rollover at
each band edge.

The setting is the new active frequency/channel name.

IMPORTANT!

If there is no activity for 30 seconds the F/CH knob will return

to the kHz access.

Rotate ON/OFF-VOL knob 1 clockwise, about half way.
Continue with either Receive or Transmit Operation

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4.7 Receive (Listen) Operation

After switching ON the radio the automatic squelch is always ON.

If the display mode shall be changed: Push once or twice the MD-

button 4.

If the active frequency shall be changed: refer to paragraph 4.6,

Switching ON - Selecting Frequency/ Channel Name - Volume

DO NOT press the PTT (push to talk) key if you want to receive!

Transmit Indicator at the display must not appear!

Normal signals are received, weak signals and interfering pulses

are disabled. Set the volume of the built-in loudspeaker or

headphone to a comfortable level by rotating ON/OFF-VOL knob 1

in 15 steps.

Weak signals can be received if the squelch circuit is switched

OFF by pressing the SQ button 3. Then typical RX noise is

heard during communication breaks.

Pressing the SQ button 3 switches the squelch circuit ON again.

IMPORTANT!

Switching OFF the squelch only makes sense if long range

reception shall take place. Thus the radio is noisy during
Standby operation, but no weak signals are suppressed and
the full receiving range is available!

Notice increased current consumption when Squelch is

switched OFF!

4.8 Transmit (Talk) Operation

DANGER!
Every radio, when transmitting, radiates energy into the
atmosphere, therefore:

Do not operate this radio in an explosive atmosphere

(petroleum fuels, solvents, dust, etc.)! Danger by generation
of sparks.

NEVER TRANSMIT in vehicles, aircraft or inside buildings with

the spring steel band antenna! This may cause malfunction of
the avionics, trigger the airbag or mix up domestic electronic
equipment!

Never place the radio such as the antenna gets very close to,

or touching, exposed parts of the body, especially the face,
shoulder or the eyes.

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IMPORTANT!

Please keep radio discipline!
Transmit only on a clear channel.

Care for an all-round obstacle free location of your antenna; the

called station should be within "line-of-sight" distance.

Volume is very important. Increasing speaking levels while the lips

are facing the microphone (distance 1" to 2") will increase clarity.
Talk slow, make each word a precise and individual entity.

The radio is equipped with a TX time-out-timer (2 minutes). This is

used to limit the duration of calls and to guard against accidental
PTT locking.

If the display mode shall

be changed:

Push once or twice the MD-button 4.

If the active frequency

shall be changed: Refer to 4.6 Switching ON - Selecting Frequency/Channel Name -

Volume.

Transmitting is only possible on a free channel (no communication

audible).

If you have to transmit (e.g. in case of emergency) although the

channel is busy, the Transmit Disabled circuit may be turned OFF
by pressing the SQ button 3.

When the DITTEL hand-held microphone, article-no. F10041 is

used, take it out of its compartment 12. Press and hold the
orange colored PTT (push to talk) key.

Talk in a loud, clear voice with the microphone one or two inches

from your lips. Make each transmission as brief as possible. As
long as the PTT key is pressed the Transmit Indicator at the
display appears!

Release the PTT key to end the transmission and to open the

channel for reception; the Transmit Indicator must disappear.
Switch Squelch ON again, if applicable.

The radio is equipped with a TX time-out-timer. This is used to

limit the duration of transmissions to two minutes. When the
transmitter is keyed continuously longer than 2 minutes the
display of the FSG 90(X) starts flashing and transmission is
disabled. If you have to make calls longer than 2 minutes
momentarily release the PTT key and press again. The TX time­out-timer starts for another 2 minutes.

PORTABLE TRANSCEIVER FSG 90PC
4 Operation

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DITTEL  D10075 May 2010

4.9 Storing a new Frequency/Channel Name

In each active operating mode (8.33/25 kHz mode or '25 kHz only'

mode) up to 99 non-volatile channel memories can be user
programmed. Channel memories of the non-active mode remain
stored in the background. They are accessible after calling up the
respective mode.

IMPORTANT!

Free selection of frequencies/channel names and new storing may

be restricted due to Set-Up adjustment (refer to paragraph 3.4.9)!

Channel memories 1 to 4 are always pre-set and may be used

when called. They can only be changed but not deleted. Ex works
and after Master Reset channel memories 1 to 4 are pre-set with
either 118.00 MHz or 118.005 MHz!

Storing can be initialized in all three display modes.
The USE frequency/channel name in the upper line of the display

can be stored to any of the 99 channel memories.

Set the frequency or channel name to be stored in the upper line

at the display!

Initialize storing by pressing the STO button 2.
The last used channel memory number appears, "CH" flashes.

Select appropriate channel memory number (1 to 99) by turning

the F/CH knob 6. On a free memory channel an "F" appears

before "CH" and the memory number.

To enter the new frequency/channel name press the STO-button

2

. The frequency/channel name will be stored under the

selected channel memory number. A previously stored frequency/

channel name will be overwritten.

4.10 Recall of stored frequencies/channel names:

By pushing once or twice the MD-button 4 select the CHANNEL

mode.

By rotating the F/CH knob 6 set appropriate channel memory

number with its associated frequency/channel name at the

display. Only channel numbers that have been programmed

before will appear.
Now the radio operates on that frequency/channel name indicated at

the display.

PORTABLE TRANSCEIVER FSG 90PC

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4.11 Lighting the Frequency Display

Lighting of the frequency display 7 is activated by pressing the

red test button of the battery indicator 8.

4.12 Turning OFF the radio

Always turn OFF the radio after use by rotating the ON/OFF-VOL

switch 1 to the fully ccw position to prevent unnecessary

discharge of the battery.
Place the microphone in its compartment 12.
Loosen screwed cap and wing screw of the spring steel band

antenna and push the upper part into its compartment 11. Bend

the remaining portion so, that the Snap-On cover can be placed in

position.

DANGER!

Always tighten the antenna's screwed cap and wing screw
before closing the cover; otherwise the spring steel band
antenna will bounce out, when the cover is lifted again!

4.13 External Power Supply

The capacity of the built-in battery may not be adequate due to

frequent transmitting operations or very long operating times without
possibility to recharge. Radio operation can be enabled through an
external 12 Vdc power source such as an automobile battery via our
Car Cable F10393 which fits into the cigarette lighter socket of most
cars (minus on common ground). Mating plug: article No. E61933.

4.14 Removing & Installing the Transceiver

IMPORTANT!

Switch OFF the radio first! This is a simple precaution which

helps protect the solid state circuitry and extends the
operating life of your avionics equipment.

To dismount the transceiver FSG 90(X) from its case, remove the

three cross-recessed screws 15 and lift off the matching plate.

Eject the transceiver from the rear connector of the case by

pressing ejector knob 20 on the rear. Pull out transceiver.
To install the transceiver, carefully insert it into the case. The

plugs mate automatically to the case's wiring. Put on the matching

plate and fix it by the three cross-recessed screws 15. Check

fixing and function.

PORTABLE TRANSCEIVER FSG 90PC
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DITTEL  D10075 May 2010

4.15 Battery Operating Times

Prerequisite: Maximum RX audio volume

Max. current drain

.11 A 2.5 A 1.0 A .11 A 2.5 A 1.0 A .11 A 2.5 A 1.0 A .11 A

Lead Accumulator

12 Volts 7.2 Ah

STBY,

w/out RX

5%

TX 5%RX

90%

STBY

10%

TX

20%

RX

70%

STBY

20%

TX

40%

RX

40%

STBY

Temperature

- 20°C 38 h 12.30 h 6.00 h 3.10 h
Temperature +20°C 62 h 20.10 h 10.00 h 5.20 h
Temperature +50°C 66 h 22.10 h 11.10 h 6.00 h

Prerequisite: Minimum RX audio volume

Max. current drain

.085 A 2.5 A .25 A .08 A 2.5 A .25 A .08 A 2.5 A .25 A .08 A

Lead Accumulator

12 Volts 7.2 Ah

STBY,

w/out RX

5%

TX 5%RX

90%

STBY

10%

TX

20%

RX

70%

STBY

20%

TX

40%

RX

40%

STBY

Temperature -20°C 57 h 15.50 h 8.50 h 4.40 h
Temperature +20°C 85 h 26.10 h 14.30 h 7.50 h
Temperature +50°C 90 h 28.40 h 16.20 h 8.40 h

4.16 Siting

The radio operates in the VHF frequency band, this is a Line-Of-Sight

(LOS) frequency; therefore, siting of the radio greatly affects its
operating range. The longest range is normally obtained when a
direct LOS is maintained between the radios. Use of hilltop, roof or
tower locations will increase the LOS range. Location in valleys with
intervening hills, behind vehicles or buildings or in dense woods may
reduce or prevent communications. If possible, avoid antenna
locations near electrical interference sources, such as computers,
power and telephone lines, radar, welders and electrical generators.

4.17 Base Operation

To operate the radio as a base station, a weather-proof anti static and

lightning protected folded-top antenna is ideally suited. The antenna
should be mounted vertically and elevated as high as possible on a
roof, horizontally free of obstacles. The antenna mast has to be
grounded and anchored, as necessary. For a distance of up to 15 m
the antenna cable may be a RG 58 C/U type, for longer distances
always use the cable type RG 213/U (low loss).

In general, the antenna cable should not be longer than necessary.

PORTABLE TRANSCEIVER FSG 90PC

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4.18 Functional Checks

If the transceiver FSG 90 PC does not operate correctly, check the
following:

Is the required frequency/channel name visible in the upper line?

Adjust required frequency/channel name!

Is battery supply sufficient? Observe onboard supply indicator

particularly during transmit, at least one segment must be shown!
Weak RX signal? Press SQ button = switch OFF squelch circuit!
Weak TX signal? Check microphone, mic SET-UP, radio, or

antenna system! Is the voice volume too low? Speak loud and

clear while the lips are facing the microphone! Try another

location!
Make sure that transceiver's antenna is vertically positioned and is

not screened by nearby placed metallic objects or buildings.
Singing during transmit? Adjust Sidetone more quietly; put on

headset; keep microphone in other position!
Rattles when receiving? Metal propellers between transmitting

airborne radio and base station antenna!
Called station hears carrier, but no voice? Check microphone and

contacts on microphone jack!
Noisy - distorted - garbled? Suppress electrical interference of

motorized aircraft or vehicle (generator, regulator), check antenna

system; check antenna-, microphone- and radio- connector for

proper seat! Change location!
Flashing display, transmitter switches off itself? PTT key sticks!

Check PTT key and cables. Transmitter was keyed longer than 2

minutes. Release PTT key, normal operating is possible again.

In case of emergency turn radio OFF and switch ON again,

permits another two minutes to transmit.

In case of doubt, compare operation of the transceiver with another
transceiver on the same location or call another station. If service is
necessary please consult your authorized dealer or an approved
avionics workshop.

PORTABLE TRANSCEIVER FSG 90PC
5 ICAO Frequency / Channel Name

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DITTEL  D10075 May 2010

Section 5 ICAO Frequency / Channel Name Assignment in the

combined 8.33 kHz / 25 kHz Operation

The following table shows transmit and receive frequency, the
respective channel spacing and the associated display of the FSG 90
in the range from 118.000 MHz to 118.1000 MHz.
This assignment also applies of course to all other frequencies
between 118.1000 MHz and 136.9750 MHz.

Transmit and Receive

frequency (MHz)

Channel spacing

8.33/25 kHz Mode

Channel Name =

Display at FSG 90

25 kHz Mode

Frequency =

Display at FSG 90

118.0000 25 118.000 118.00

118.0000 8.33 118.005

118.0083 8.33 118.010

118.0166 8.33 118.015

118.0250 25 118.025 118.02

118.0250 8.33 118.030

118.0333 8.33 118.035

118.0416 8.33 118.040

118.0500 25 118.050 118.05

118.0500 8.33 118.055

118.0583 8.33 118.060

118.0666 8.33 118.065

118.0750 25 118.075 118.07

118.0750 8.33 118.080

118.0833 8.33 118.085

118.0916 8.33 118.090

118.1000 25 118.100 118.10

118.1000 8.33 118.105

and so on etc etc

PORTABLE TRANSCEIVER FSG 90PC

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Section 6 Technical Summary FSG 90 PC

6.1 General

Frequency Range : 118.000 MHz ... 136.975 MHz, 8.33 kHz and/or

25 kHz increments

Number of Channels : 2,278 in the combined 8.33/25 kHz channel spacing,

free selectable, or

760 in the 25 kHz only channel spacing, free

selectable

Transmitter Output FSG 90

Transmitter Output FSG 90-H1

:
:

6 Watt / 50 ; ca 20 W PEP @ 13.8 Vdc
5 Watt / 50 ; ca 16 W PEP @ 12.0 Vdc

10 Watt / 50 ; ca 30 W PEP @ 14.0 Vdc
8 Watt / 50 ; ca 25 W PEP @ 12.0 Vdc

Receiver Sensitivity,
m = 30%/ 1 kHz

:

2.0 µV EMF/ 107 dBm/50 Ohms for 6 dB (S+N/N)

Frequency Accuracy :

< ± 1 ppm at 0°C +40°C,
< ± 1.5 ppm at -20°C +55°C

AF Output (K 10%)

:

2 Watts into 8 Ohms and 100 mW into 600 Ohms

Nominal Voltage Battery Charger :

115 Vac / 230 Vac, 50 60 Hz

Nominal Voltage Transceiver :

11 16.5 Vdc, Emergency 10 11 Vdc

less 9 Vdc automatic disabling
Built-in Battery : Sealed lead accumulator, 12 Vdc / 7.2 Ah
Power Consumption Charger : 9 VA / 39 mA
Power Consumption : Stand-by:

Receive (Voice):

Transmit (Voice):

Lighting and Supply Check:

85 mA (typical)
less than 1 A
less than 2.5 A/4.0 A

30 mA additional
Duty Cycle : 2 min Transmit (time-out-timer)
Operating Temperature : -20°C ... +55°C / +70°C
Dimensions : 277 mm × 86 mm × 345 mm (incl. handle)
Weight : 6.1 kg incl. mic & spring steel band antenna

ADDITIONAL FEATURES

99 user-programmable, non-volatile memory channels

each in combined 8.33/25 kHz and in "25 kHz only"
operation; true sidetone via headphone; TX time-out­timer; TX disabled when channel busy

Sockets to connect : External DC Supply, Dynamic Microphone, Push-to-

talk Switch, Headphone, Headset, 50 Ohms Antenna,
Lighting of frequency display : By two LEDs, built-in
Fusing : DC: 1 x 6.3 amps, time-lag

AC: 2 0.04 amps, time-lag

IMPORTANT!

The portable ground station may only be used after

permission by the respective authorities.

PORTABLE TRANSCEIVER FSG 90PC
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DITTEL  D10075 May 2010

6.2 Approvals, applies for Transceiver FSG 90(X)

Ground Operation (Regulatory Authority

For Telecommunications and Posts)

EC Type-Examination Certificate no. B132705J, and 
TYPE-EXAMINATION CERTIFICATE no. A132937J

Ground Operation (DFS) No. B-7850/97
Requirements for ground operated radios Reg TP 321 ZV 039 (issue March 1998)

ETSI ETS 300 676 (8.33 kHz CH spacing, ground
operation)

DIN / ISO 6737-1 (12 V Vehicle Power System)

Airborne Radio (Regulatory Authority For
Telecommunications and Posts)

EC Type-Examination Certificate no. B132705J, and
TYPE-EXAMINATION CERTIFICATE no. A132937J

Airborne Radio (Regulatory Authority For
Telecommunications and Posts, and LBA)

Reg TP 321 ZV 034 (issue July 1998)
EUROCAE ED-23B:
Receiver Class C 25 kHz spacing CLIMAX

operation, and
Receiver Class E 8.33 kHz spacing
Transmitter Class 4 100 NM with 25 kHz spacing,

and
Transmitter Class 6 100 NM with 8.33 kHz spacing
Environmental Requirements EUROCAE ED-14C / RTCA

DO-160C:
Categories D1-AA(BMN)XXXXXXZBBBATZ(A3C2X)XXX

ETSO-Authorization (LBA, airborne) ETSO-2C37e and ETSO-2C38e

No. LBA.O.10.911/98 JTSO,
replaced by EASA.21O.1305

Software EUROCAE ED-12B / RTCA DO-178B, Level D

6.3 Detailed Receiver Characteristics

Receiver Type Dual Superhet
IF Frequencies First IF 10.0 MHz, second IF 455 kHz, high injection
Sensitivity (m = 30% / 1,000 Hz)

2 µV EMF ( -107 dBm/50 ) for 6 dB S+N/N

Selectivity
a) Reference level m = 60%/1,000 Hz for

12 dB SINAD

b) Interference level m = 60%/400 Hz

(additional)

Condition: 1 kHz SINAD decreased from 12 dB to 6 dB

6 dB for ± 8 kHz (25 kHz CH spacing)
60 dB for ± 17 kHz (25 kHz CH spacing)
70 dB for ± 25 kHz (25 kHz CH spacing)
6 dB for ± 3 kHz (8.33 kHz CH spacing)
60 dB for ± 7.37 kHz (8.33 kHz CH spacing)

Squelch Type

Automatic (FM/AM), adjustable (SETUP); manual
override.

AGC Characteristic

6 dB, 2 µV EMF (-107 dBm) ... 2 V EMF (+13 dBm/

50 ), m = 30%/1,000 Hz

AGC Delay (RX)

0.1 sec, 200 mV EMF (-1 dBm) 2 µV EMF (-107

dBm / 50 ), m = 30%/1,000 Hz)

AGC Recovery after TX

0.1 sec at 10 µV EMF (-93 dBm / 50 ), after TX end

Transfer time TX / RX

50 msec

Modulation distortion (AF Processor OFF)

10%, 350 ... 2,500 Hz (m = 85%)

PORTABLE TRANSCEIVER FSG 90PC

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Audio Frequency Response / AF Fidelity

+2 dB and -4 dB, 350 ... 2,500 Hz, 25 kHz and

8.33 kHz CH spacing

-20 dB, 4,000 Hz, 25 kHz CH spacing (Climax Offset

Operation)

Audio Frequency AGC

1.5 dB, m = 30%  90%

Nominal AF Output (Speaker)

4 Watt / 4 , or 8 Watt / 2 (at 13.8 Vdc)

1.5 Watt / 4 (at 10 Vdc)

Nominal AF Output (Phone)

100 mW / 600 (at 13.8 Vdc)
50 mW / 600 (at 10 Vdc)

AF Noise Level

40 dB, m = 30%/1,000 Hz
200 µV EMF (-67 dBm/50 ) ... 10 mV EMF (-33 dBm/
50 )

AF External Input

1 Volt into 600 for rated AF output (13.8 Vdc supply)

Spurious Response

10 mV EMF (-33 dBm), m = 30%/1 kHz, for S+N/N

6 dB

a) 108 - 156 MHz (of any Test Channel ± 8 kHz), at

other than the assigned channel and the adjacent
channels

b) 50 kHz  1,215 MHz (except 108 - 156 MHz)

Cross Modulation (AF Processor OFF)

Max. AF output level 10 dB below nominal AF output
level:

a) Wanted signal 20 µV EMF (-87 dBm) ... 500 µV EMF

(-59 dBm/50 ), unmodulated at RX frequency,
additional

b) Unwanted signal 10 mV EMF (-33 dBm), m =

30%/1,000 Hz, frequency 100 - 156 MHz
(frequency ± 2 RX channels)

Intermodulation (AF Processor OFF)

6 dB AF Quieting (-5 dBm/50 , 87.5  107.9 MHz),
2 signals

Desensitization Wanted signal 20 µV EMF (-87 dBm), m = 30%/1,000 Hz,

at RX frequency, for S+N/N 6 dB, in the presence of
Unwanted signal A 10 mV EMF (-33 dBm/50 ),

unmodulated, frequency 108 ... 156 MHz, except used
CH, but includes 1 RX CH, or
Unwanted signal B 200 mV EMF (-7 dBm/50 );

minimum 10 mV EMF (-87 dBm), unmodulated,
frequency 50 kHz  1,215 MHz, except 87.5 MHz ...
156 MHz, or

Unwanted signal C 250 mV EMF (-5 dBm), unmodulated,
frequency 87.5 ... 107.9 MHz

Receiver Spurious Emission

400 pW / -64 dBm (50 kHz ... 1,215 MHz)

Channel Selection Time

0.4 sec, AF level within 3 dB, max. 99 Channel

memories

Receiver Muting, Squelch (CLIMAX) Simultaneous input at RX frequency:

a) Wanted Signal A: 10 µV EMF (-93 dBm) +8 kHz (m =

30%/1,000 Hz), Squelch is open.

b) Unwanted Signal B: More than 24 µV EMF (-85 dBm),

m = 30% / 1,000 Hz, vary this frequency slowly from

-8 kHz to +4 kHz. Squelch must remain open.

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DITTEL  D10075 May 2010

6.4 Detailed Transmitter Characteristics

FSG 90: Nominal TX RF Output Power
(normal operation)

6 Watt / 50 (carrier), 20 Watt PEP, @ 13.8 Vdc

FSG 90: Nominal TX RF Output Power
(emergency operation)

1.5 Watt / 50 (carrier) @ 10 Vdc supply

FSG 90-H1: Nominal TX RF Output Power
(normal operation)

10 Watt / 50 (carrier), 30 Watt PEP, @ 14.0 Vdc

FSG 90-H1: Nominal TX RF Output Power
(emergency operation)

3.5 Watt / 50 (carrier) @ 10 Vdc supply

TX Duty Cycle 1 : 4 (1 minute TX / 4 minutes RX)
TX Time Out Timer After 2 minutes continuous TX. Transmitter is unkeyed

automatically and the radio display flashes as a warning.
Modulation Amplitude modulation, AM (A3E)
Depth of Modulation

75% (Voice processor with dynamic compression)

Modulation Distortion

10% (m = 70% / 1,000 Hz)
15% (m = 70% / 350 ... 2,500 Hz)

Modulation Audio Frequency Response

+2 dB and -4 dB (350 ... 2,500 Hz)

Modulation AF Input for m = 70%

Dynamic Microphone: 0.5 ... 10 mV symmetrical,

sensitivity adjustable in SETUP.
True Transmit Sidetone (derived from

modulated TX RF signal)

100 mW / 600 (at 13.8 Vdc supply),
50 mW / 600 (at 10 Vdc), volume adjustable in

SETUP, independent from speaker volume
Carrier Noise Level

45 dB (m = 70%/1,000 Hz)

Emission of RF Energy ( 1000 MHz) 0,25 µW (-36 dBm) / 71 dB µV / 3.54 mV / 50

4 nW (-54 dBm) / 53 dB µV / 446 µV / 50 , from
47 ... 68, 87.5 ... 137, 162 ... 244, 328 ... 336,
470 ... 862 MHz

Emission of RF Energy 1000 MHz)

1 µW / -30 dBm / 77 dB µV / 7 mV / 50

Transmitter Spectrum Mask Max. +2 / -4 dB at 350  2,500 Hz modulation (8.33 kHz

spacing)

45 dB at 3,200 Hz modulation (8.33 kHz spacing)

60 dB at 5,000 Hz modulation (8.33 kHz spacing)

Channel Selection Time

0.5 sec

Frequency Tolerance

1 ppm (0°C ... + 40°C / 32°F ... 104°F),

1.5 ppm (-20°C ... + 55°C / -4°F ... + 131°F)

Unwanted FM (Frequency modulation)

1.0 kHz at m = 70% / 1,000 Hz

TX Intermodulation

45 dB

Antenna Mismatching VSWR 3 : 1, normal operation

At VSWR 3 : 1 the requirements for modulation distortion,
spurious and harmonics output as well as frequency

stability are met. In addition, the RF output is 40 %

FSG 90: 2.4 Watt into 50 at 13.8 Vdc.
FSG 90-H1: 4 Watt into 50 at 14.0 Vdc.

At VSWR 5 : 1 still functional.

PORTABLE TRANSCEIVER FSG 90PC

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6.5 Environmental Performance Classification (Transceiver only)

Compliance measurements according to EUROCAE ED-14C / RTCA DO-160 C were
performed and the following Environmental Categories fulfilled.

Environmental Conditions

ED-14C

DO-160C

Description of conducted tests Category

Temperature and Altitude 4.0 Equipment tested to category D1

Low Temperature

4.5.1 Operation -20°C (-4°F)
Storage -55°C (-67°F)

High Temperature

4.5.2 Operation +55°C (131°F)
Storage +85°C (185°F)

in-flight Loss of Cooling

4.5.3 No auxiliary cooling required

-

Low Pressure (Altitude)

4.6.1 50,000 ft /15,240 m

Decompression

4.6.2 No test required in category D1

High Pressure

4.6.3 No test required in category D1

Temperature Variation 5.0 10°C/min (18°F/min),

Equipment tested to category

A

Humidity 6.0 Equipment tested to category A
Shock 7.0 Equipment tested to

Operational shocks

7.2 6 g

Crash safety

7.3 15 g

Vibration 8.0 Equipment tested to category BMN
Explosion 9.0 No test required X
Waterproofness 10.0 No test required X
Fluids Susceptibility 11.0 No test required

X

Sand and Dust 12.0 No test required

X

Fungus 13.0 No test required X
Salt Spray 14.0 No test required X
Magnetic Effect 15.0 13 cm/1°, Equipment tested to

category

Z

Power Input 16.0 Equipment tested to category B
Voltage Spike 17.0 Equipment tested to category B
Audio Frequency Susceptibility 18.0 Equipment tested to category B
Induced Signal Susceptibility 19.0 Equipment tested to category

A

Radio Frequency Susceptibility 20.0 Equipment tested to category T
Radio Frequency Emission 21.0 Equipment tested to category Z
Lightning Induced Susceptibility 22.0 Equipment tested to category A3C2X
Lightning effects 23.0 No test required X
Icing 24.0 No test required X
Other Test --- No test required

X

PORTABLE TRANSCEIVER FSG 90PC
6 Technical Summary

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DITTEL  D10075 May 2010

All dimensions in Millimeter

Carrying Case PC 90

Dimensions

PORTABLE TRANSCEIVER FSG 90PC

6 Technical Summary

May 2010

DITTEL  D10075

47

Carrying Case PC 90

Circuit Diagram

PORTABLE TRANSCEIVER FSG 90PC
6 Technical Summary

48

DITTEL  D10075 May 2010

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DITTEL  D10075 May 2010

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PORTABLE TRANSCEIVER FSG 90PC
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DITTEL  D10075 May 2010

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PORTABLE TRANSCEIVER FSG 90PC
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DITTEL  D10075 May 2010

PORTABLE TRANSCEIVER FSG 90PC

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PORTABLE TRANSCEIVER FSG 90PC
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DITTEL  D10075 May 2010