Telex RadioCom BTR-200 II, BTR-200B II, RadioCom TR-200, RadioCom TR-200P, RadioCom BTR-200B II Operating Instructions Manual

Telex

Operating Instructions

Headset

Power

X

E

L

E

T

Ext Intercom Aux Audio

RadioCom

ä

Portable Stations CarrierStatus

1

2

3

Portable Station Connect

4

Headset

Controls

Volume

X

E

L

E

T

BTR-200 II

Mic On Push Twice to Latch

PROFESSIONAL
WIRELESS
INTERCOM SYSTEM
TR-200, TR-200P,
BTR-200 II, BTR-200B II

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TABLE OF CONTENTS

INTRODUCTION..............................................................................................................................1

GENERAL DESCRIPTION............................................................................................................1

TR-200 BASE STATION TRANSCEIVER.....................................................................................3

TECHNICAL INFORMATION ......................................................................................................3

SPECIFICATIONS ..................................................................................................................3

FEATURES..............................................................................................................................4

CONTROLS AND CONNECTIONS..............................................................................................5

FRONT PANEL.......................................................................................................................5

REAR PANEL .........................................................................................................................6

TR-200 BELT-PACK TRANSCEIVER...........................................................................................9

TECHNICAL INFORMATION ......................................................................................................9

SPECIFICATIONS ..................................................................................................................9

FEATURES............................................................................................................................10

CONTROLS AND CONNECTIONS............................................................................................10

EXTERNAL CONTROLS ...................................................................................................10

INTERNAL CONTROLS .....................................................................................................12

EQUIPMENT SET-UP....................................................................................................................13

UNPACKING ................................................................................................................................13

ANTENNA INFORMATION .......................................................................................................13

ANTENNA CONNECTIONS ...............................................................................................13

ANTENNA POLARIZATION..............................................................................................14

DISTANCE BETWEEN ANTENNAS .................................................................................14

ANTENNA PLACEMENT ...................................................................................................15

IMPROVING RECEPTION/INCREASING RANGE..........................................................16

BTR-200 SET-UP..........................................................................................................................17

LOCATION............................................................................................................................17

INTERNAL INTERCOM SWITCHES.................................................................................17

RACK MOUNTING..............................................................................................................19

LOCAL HEADSET CONNECTION ....................................................................................21

HEADSET MIC SELECT SWITCH.....................................................................................21

TRANSMIT SWITCH...........................................................................................................21

INTERCONNECTION TO A HARD-WIRED INTERCOM...............................................22

AUXILIARY AUDIO CONNECTION.................................................................................23

POWER CONNECTION.......................................................................................................23

DUMMY LOAD....................................................................................................................23

TR-200 SET-UP.............................................................................................................................24

HEADSET CONNECTION ..................................................................................................24

DYNAMIC/ELECTRET MIC SWITCH ..............................................................................24

BATTERY INSTALLATION ................................................................................................25

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TABLE OF CONTENTS (CONT.)

PRE-WALK-THRU CHECKLIST ................................................................................................26

SYSTEM OPERATION ..................................................................................................................27

BTR-200 OPERATION .................................................................................................................27

POWER..................................................................................................................................27

LOCAL HEADSET VOLUME.............................................................................................27

PUSH TO TALK/LOCK TO TALK SWITCH......................................................................27

TR-200 OPERATION ....................................................................................................................28

POWER..................................................................................................................................28

BATTERY CHECK ...............................................................................................................28

HEADSET VOLUME ...........................................................................................................28

PUSH TO TALK/PUSH TO TRANSMIT SWITCH ............................................................28

BATTERY REMOVAL .........................................................................................................29

ENABLING AUDIO .....................................................................................................................30

PORTABLES .........................................................................................................................30

WIRED INTERCOM.............................................................................................................30

AUXILIARY..........................................................................................................................30

SETTING SYSTEM GAIN LEVELS ...........................................................................................31

ADJUSTING GAIN...............................................................................................................31

BTR-200 BASE STATION ....................................................................................................31

TR-200 PORTABLE ..............................................................................................................31

INTERCOM GAIN................................................................................................................32

AUXILIARY GAIN...............................................................................................................32

SYSTEM WALK-THRU .................................................................................................................33

TROUBLE SHOOTING .................................................................................................................34

BATTERY INFORMATION ..........................................................................................................35

GENERAL.....................................................................................................................................35

BC-4 BATTERY CHARGER........................................................................................................35

RECOMMENDED HEADSETS ....................................................................................................36

ACCESSORIES ...............................................................................................................................38

WARRANTY SERVICE INFORMATION...................................................................................40

FCC INFORMATION.....................................................................................................................41

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INTRODUCTION

GENERAL DESCRIPTION

This manual covers the BTR-200, BTR-200II,
and the BTR-200B II Base Stations and the
TR-200 and TR-200P Portable Transceivers
(referenced as BTR-200 and TR-200 unless
otherwise specified.)

The Telex Models BTR-200 and TR-200 were
specifically designed to provide the user with a
highly flexible wireless two-way communica
tion system with the capability of interface
with a wired intercom system and other auxil
iary audio.

ANT

HEADSET

MICROPHONE

TR-200

TRANSMITTER

RF CARRIER

F

RF CARRIER

F

ANT

-

-

SIGNAL

SIGNAL

SIGNAL

SIGNAL

At the BTR-200 operator’s command, the
remotes may communicate with each other,
with a wired intercom system or with an auxil
iary system. The BTR-200 Base Station with
its one transmit and four receive channels was
designed to operate in full duplex (simulta
neous two-way communications) with up to
four TR-200 Belt Pack transceivers (one trans
mit and one receive channel) See block dia
gram in figure 1.

WIRED

INTERCOM

ANT

ANT

BTR- 200

HEADSET

FM

ANT

ANT

RECEIVER

REC1REC2REC3REC

4

EARPHONE

-

-

-

-

EARPHONE

RECEIVER

R CARRIER

F

SIGNAL

TRANSMITTER

AUXILIARY

INPUT

Figure 1

Block Diagram of System

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AUXILIARY

OUTPUT

MICROPHONE

The system operates on selected frequencies
within the 150-216 MHz band.

The BTR-200 system is fully compatible with
a number of other wired intercom manufactur
ers units. See the BTR-200 Setup Section for
additional information.

The Telex Model’s TR-200 and TR-200P
Belt-pack Transceivers, are designed with one

transmit and one receive channel.

The TR-200 Transceiver operates in the con
tinuous transmit mode with the audio, to talk,

activated by a switch. As many as four TR-200
belt-pack transceivers can operate in a fully

duplex network with one Telex Model

-

BTR-200 or BTR-200 II Base Station.

The TR-200P Transceiver operates in the
Push-to-transmit mode (the transmit and talk
function are activated together). Any number
of TR-200P transceivers can be used in a
half-duplex network with one BTR-200 or
BTR-200 II Base Station. Operate only one
transmitter at a time. Attempting to use two
transmitters simultaneously on the same chan
nel will cause interference.

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-

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BTR-200 BASE STATION TRANSCEIVER

TECHNICAL INFORMATION

SPECIFICATIONS BTR-200

Input Power ........................................................................13.0 VAC RMS/300 mA with supplied adaptor

or filtered 12 to 14 VDC/300 mA source

Intercom Output ..........50 mV (Low) or 330 mV (Hi) RMS into 300 ohm load typical (at rated deviation)

Intercom Input (Gain Minimum)................................................300 mV RMS typical (for rated deviation)

Auxiliary Output ............................................430 mV RMS into 600 ohm load typical (at rated deviation)

Auxiliary Input (Gain Maximum) ................................................60 mV RMS typical (for rated deviation)

Local Headset Input .............................................................................................2 mV RMS input nominal

1.5 mV RMS input at compression (Dynamic)

Local Headset Output....................................................................32 mV maximum output into 600 ohmst

Temperature Range .......................................................................................-4°F to 130°F (-20°C to 55°C)

Dimensions....................................................................................................15.75” W x 1.75” H x 10.5” D

(40 cm x 4.5 cm x 26 cm)

Weight ......................................................................................................................................4.5 lbs (2 kg)

Transmit

RF Frequency Range...............................................................................................................150-216 MHz

RF Frequency Stability ......................................................................................Crystal Controlled, 0.005%

RF Power Output ..................................................................................................................50 mW Typical

Modulation..................................................................................................................FM, 3 KHz deviation.

115 micro-seconds Pre-emphasis

Transmit Antenna ..........................................................................................................5/8-wave (supplied)

SO239 connector on chassis

Modulation Limiter .......................................................................................................Internal Compressor

Modulation Frequency Range ...................................................................................300 to 5000 Hz ±2 dB

Radiated Harmonics and Spurious Emissions.................................................................................-45 dBC,

Exceeds FCC Specifications

FCC...................................................................................................Type Accepted Under Parts 90 and 74

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SPECIFICATIONS BTR-200 (Cont.)

Receive

RF Frequency Range..............................................................................................................150-216 MHz

RF Frequency Stability ......................................................................................Crystal Controlled, 0.005%

Type..................................................................................................Dual conversion superheterodyne, FM

RF Sensitivity.......................................................................................Less than 0.5 µV for 12 dB SINAD

IF Selectivity...............................................................................3 dB at 30 kHz (4 pole Monolythic Filter)

Image Rejection .....................................................................................................................65 dB or better

Squelch Quieting..................................................................................................................................90 dB

Squelch Threshold ..............................................................................................................1.0 µV (Internal)

Signal-to-Noise Ratio...........................................................................................................................90 dB

Receive Antenna ............................................................................................................5/8-wave (supplied)

SO239 connector on chassis

Distortion .......................................................................................................Less than 1% at Rated Output

FCC .....................................................................................................................Notification Under Part 15

FEATURES

Intercom connections with the ability to in-

The Telex Model BTR-200 is a Base Station
with one transmitter and four receivers. It is
designed for portable two way communication
with the capability for interface to other audio
systems. Features include:

·

terface with most wired intercom systems.

·

RF LED indicator for each portable station.

·

An extremely flexible unit that has the ca­pability to communicate at one time with
any number of the available portable sta
tions (up to four) or wired stations (inter
com and/or other audio source).

·

Powered by an external AC wall supply
(supplied), via the power jack on the rear
of the unit. It can also be powered by any
filtered 12 to 14 VDC/300 mA source or

13.0 VAC RMS 300 mA source.

·

All metal case for superior shielding.

·

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Molded front panel for aesthetic appeal
along with functionability .

·

Table or single height rack mountable.

CONTROLS and CONNECTIONS

FRONT PANEL ( Refer to Figure 3)

Power ON/OFF Switch: Push this switch

once toturn power ON; push it again to turn the
power OFF.

Power ON Indicator: The Power ON Indica
tor is illuminated when the Power ON/OFF
Switch is pushed in the ON Position. It re
mains illuminated while the Transceiver ison.

Local Headset Connector: 4 Pin XLR Con
nector for Input/Output. The headset jack will
accept 6 different Telex Model Headsets. See
“Recommended Headset” Section in back of
manual for more information. Compatible with
other intercom headsets with four pin XLR
connectors that are wired as shown in Figure 2.

MALE CONNECTORS

BTR-200/TR-200

MICROPHONE
SHIELD (-)

HEADPHONE
BALANCED
AUDIO
OUT

MICROPHONE
AUDIO (+)

1

4

3

2

Mic On-Push-to-Talk/Lock-to-Talk Switch:

Enables the local headset microphone audio
function.

NOTE: DOES NOT control base station RF

­transmit.

­Local Push-to-Talk Indicator: Will be illumi

nated whenever the talk function is on.

Local Microphone Gain Control and

­Overmodulation Indicator: A screwdriver

adjustable control is provided to control the in
put level of the local headset mic. This input is
protected from overloads by means of a gain
compressor whoseoperation is signaled by the
gain LED indicator.

Portable Enable Switches and Indicators:

When in the “IN” position, the Enable
switches allow the user of the corresponding

portable unit to be heard by others connected
to the system. When in the “OUT” position,
the respective portable will be muted, but this
portable will still be able to hear all other se­lected remotes and interfaces. The indicators
normally show the presence of a portable
transceiver in use on the channel correspond
ing to that indicator.

-

-

-

Figure 2

Headset XLR Connector Wiring

Local Headset Volume: Adjusts volume to

Local Headset. DOES NOT AFFECT MICRO
PHONE GAIN.

-

-5-

Ext Intercom Switch, Level Control, and In
dicator: This switch enables the wired inter

com interface when “IN”, and disables it when
“OUT”. For RTS intercoms, the “IN” position
is channel A and the “OUT” position is chan
nel B. A screwdriver adjustable control is pro
vided to control the input level of the wired
intercom.

Auxiliary Audio Enable Switch, Level Con
trol, and Indicator: The switch enables and

disables the Auxiliary interface when “IN” and
“OUT”, respectively. The function of the level

control here is the same as that described for

the intercom.

REAR PANEL (Refer to Figure 4)

Transmit Antenna Connector: Connect

5/8-wave antenna (supplied) to this connector.
Antenna color should match connector dot on
BTR-200.

Receive Antenna Connector: Connect
5/8-wave antenna (supplied) to this connector.
Antenna color should match connector dot on
BTR-200. See “Antenna Information” section
for assembly information.

Headset Microphone Select Switch: This

-

switch allows the user to select either an

­Electret or Dynamic microphone. This switch
is factory preset to DYN Position.

­NOTE: All Telex headsets that are used with

­this intercom are dynamic type microphones.

Intercom Connectors: Connections to inter
face the BTR-200 with a wired intercom sys

-

tem.

Auxiliary Output/Input Connectors: Can be
used for 2-way (four wire) input and output to
the BTR-200 or as a simplex input or output.
Typical uses are 4 wire low level intercom’s,
tape recorders, public address inputs or out
puts, or when operating two BTR-200 units si­multaneously.

Power Jack: For external AC wall supply
adaptor (supplied) or any filtered 12 to 14
VDC/300 mA source, or 13.0 VAC RMS/300
mA source.

Speaker Jack: Allows the user to connect an
external speaker (8 ohms minimum) to the
unit.

-

-

-

Transmit Switch: Slide switch that allows the
operator to select one of three transmit modes.
In the “OFF” position, the transmitter is always
off. This mode may be used if the base if func
tioning solely as a monitor. In the “CONT” po
sition, the transmitter is always on. This
continuous mode is recommended over the
“REMOTE” mode. In the “REMOTE” posi
tion, the transmitter is enabled only when one
or more portables are active.

Speaker Gain Control: Screwdriver adjust
able. Adjust the gain control clockwise to in
crease speaker gain or counterclockwise to

­decrease speaker gain.

-

NOTE: Leave setting counterclockwise if no
speaker is attached.

-

-6-

-

-

BTR-200 II

LOCAL HEADSET VOLUME

INDICATOR

LOCAL MIC

OVERMODULATION

Mic On Push Twice to Latch

Headset

Controls

Volume

LOCAL MIC GAIN CONTROL

LOCAL PUSH-TO-TALK INDICATOR

MIC ON PUSH-TO-TALK/

LOCK-TO-TALK SWITCH

4

3

PORTABLE CARRIER INDICATORS

AUXILIARY ENABLE

INTERCOM

INDICATOR

POWER ON

INDICATOR

Portable Stations Carrier Status

Aux Audio

2

1

Portable Station Connect

ENABLE SWITCHES TO RECEIVE

PORTABLE TRANSMITTERS

Figure 3

INDICATOR

Ext Intercom

Front Panel BTR-200

AUXILIARY LEVEL CONTROL

AUXILIARY ENABLE SWITCH

X

E

L

E

T

INTERCOM LEVEL CONTROL

INTERCOM ENABLE SWITCH

Power

Headset

POWER ON-OFF SWITCH

LOCAL HEADSET CONNECTOR

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RECEIVE

Receive Antenna

INTERCOM CONNECTORS

ANTENNA CONNECTOR

TELEX COMMUNICATIONS, INC.

FCC I.D. B5DBTR-200 MADE IN U.S.A..

Intercom

Intercom

PUSH

Intercom

Power

Loop-Thru

Loop-Thru

Input

Transmit

Gain

Jack

300 mA

AC/DC 13.O.V.

Speaker

Remote

Off

Cont

Elt

MIN.)

POWER JACK

SPEAKER GAIN CONTROL

SPEAKER / LOCAL MONITOR ( 8

Figure 4

Rear Panel BTR-200

TRANSMITTER SWITCH

AUXILIARY OUTPUT CONNECTOR

AUXILIARY INPUT CONNECTOR

Auxiliary

PUSH

Transmit Antenna

Audio Input

Headset Mic

Auxiliary

Dyn

Audio Output

TRANSMIT ANTENNA

CONNECTOR

-8-

HEADSET MIC SELECT SWITCH

TR-200 BELT-PACK TRANSCEIVER

TECHNICAL INFORMATION

SPECIFICATIONS TR-200

Overall

Power Requirements ......................................................................6AA cells (Alkaline, NEDA, MN 1500)

Nickel Cadmium Optional

Current Drain ..........................................................................................................................typical 65 mA

Temperature Range .......................................................................................-4°F to 130°F (-20°C to 55°C)

Dimensions......................................................................................................4.25” W x 4.125” H x 2.0” D

(108mm x 105mm x 51 mm)

Weight.................................................................................................................13 oz (369g) with batteries

Transmit Antenna...................................................................................................1/4-wave wire (attached)

Receive Antenna ....................................................................................................1/4-wave wire (attached)

Transmit

RF Frequency Range...............................................................................................................150-216 MHz

RF Frequency Stability ......................................................................................Crystal Controlled, 0.005%

RF Power Output ..................................................................................................................50 mW Typical

Modulation ..............................................................................................................FM, 5000 Hz deviation,

115 micro-seconds Pre-emphasis

Modulation Limiter .......................................................................................................Internal Compressor

Modulation Frequency Range................................................................................300 to 5000 Hz +/_2 dB

Microphone Audio Input.....................................................................................................30 to 3500 ohms

Microphone Input Sensitivity .......................................................................2 mV Dynamic, 4 mV Electret

Radiated Harmonics and Spurious Emissions.................................................................................-45 dBC,

Exceeds FCC Specifications

FCC...................................................................................................Type Accepted Under Parts 90 and 74

RF Frequency Range...............................................................................................................150-216 MHz

RF Frequency Stability.............................................................................Crystal Controlled, 0.005% Type

RF Sensitivity........................................................................................Less than 0.5 µV for 12 dB SINAD

IF Selectivity...............................................................................................3 dB at 30 kHz (Ceramic Filter)

Image Rejection .....................................................................................................................70 dB or better

Squelch Quieting..................................................................................................................................90 dB

Squelch Threshold ..............................................................................................................3.0 µV (Internal)

Signal-to-Noise Ratio...........................................................................................................................90 dB

Audio Output .............................................................................................32 mW into 600 ohms (Headset)

Distortion .......................................................................................................Less than 1% at Rated Output

FCC .....................................................................................................................Notification Under Part 15

Receive

Dual Conversion Superheterodyne, FM

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FEATURES

Lightweight, small size and is

·

self-contained.

2 separate antennas, one for transmit, the

·

other for receive.

CONTROLS AND CONNECTIONS

Push-to-Talk with Lock-to-Talk feature

·

switch for the TR-200 and
Push-to-Transmit with Lock-to-Transmit
feature for the TR-200P.

EXTERNAL CONTROLS (Refer To Figure 6)

Volume OFF/ON Control: This thumbwheel

control serves as both an off/on switch and as a
volume control.

Low Battery and Overmodulation Indicator
LED:

Low Battery Indicatorœ: Part of the bat­tery check circuit. When the power switch is

placed in the “ON” position the LED will
flash one time if the battery is good. A poor
battery will cause the LED to illuminate
continuously and a bad or unusable battery
will not cause any illumination at all.

Overmodulation Indicator: Uses the same
LED as the low battery indicator. During the
talk mode, if the microphone gain is too
high, the LED will illuminate when talking.

Push-To-Talk/Lock-To-Talk Switch: For
Model TR-200, this switch enables the talk
function. For Model TR-200P, this switch en
ables the transmit and audio function and oth
erwise operates as described for TR-200.

Headset Jack: A four pin XLR connector for
Input/Output. The headset jack will accept six
different Telex Model Headsets. See “Recom
mended Headset” Section for more informa
tion. Compatible with other intercom headsets
with four pin XLR connectors that are wired as
shown in Figure 5.

MALE CONNECTORS

BTR-200/TR-200

MICROPHONE
SHIELD (-)

4

3

2

-

-

MICROPHONE
AUDIO (+)

1

HEADPHONE
BALANCED
AUDIO
OUT

-

-

Talk LED Indicator: (Labeled “talk”) Will be
illuminated whenever the talk function on the
TR-200 or transmit function on the TR-200P is
enabled.

Figure 5

Headset XLR Connector Wiring

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LOW BATTERY / OVERMODULATION
INDICATOR LED

TALK LED INDICATOR

PUSH-TO-TALK/
LOCK-TO-TALK SWITCH

bat/

ovmod

BELT CLIP

HEADSET JACK

talk

talk

VOLUME OFF/ON CONTROL

R

RECEIVE ANTENNA

TRANSMIT ANTENNA

Figure 6

External Controls, TR-200

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