DRAKE TR-270 User Manual

TR270 FM Transceiver

Owner's Manual

POWER

MIC

TR270 FM Transceiver

VOLUME

SQUELCH

REV +

NUM

TEMP

SCAN

DEC

DTMF

ENC

TOT

PRIO

RPT

DTMF

NUM

HOLD TO SCAN

LOCK

123

SAT

DATA

WXSAT

VOICE

A MODE B

MEM

VFO

REV

SAT

B BW

CTS

STORE

VOICE

DATA

A / B

MODE

P. OUT

SETUP

W N

LOCKED

SETUP

LMH

VFO 1 VFO 2



DCDCONMAIL

XMT

TNC STATUS

TUNING

PW

MEM

RX RX

PW

MEM



STA

is a registered trademark of the R. L. Drake Company

WARNING: TO PREVENT FIRE OR

ELECTRICAL SHOCK DO NOT

EXPOSE TO RAIN OR MOISTURE

¡WARNING!

RISK OF ELECTRIC SHOCK

DO NOT OPEN

WARNING: TO REDUCE THE RISK OF ELECTRIC

SHOCK,

DO NOT REMOVE COVER

NO USER-SERVICABLE PARTS INSIDE

REFER SERVICING TO QUALIFIED PERSONNEL

Important Safeguards i

An appliance and cart combination should be moved with care. Quick stops, excessive force and uneven surfaces may cause the appliance and cart combination to overturn.

The lightning flash with arrow head symbol, within an equilateral triangle, is intended to alert the user to the presence of uninsulated "dangerous voltage" within the product's enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons.

The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the appliance.

WARNING:

TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE. DO NOT OPEN THE CABINET, REFER SERVICING TO QUALIFIED PERSONNEL ONLY.

CAUTION:

TO PREVENT ELECTRIC SHOCK, DO NOT USE THE THREE WIRE CORD WITH AN EXTENSION CORD RECEPTACLE OR OTHER OUTLET UNLESS THE BLADES CAN BE FULLY INSERTED TO PREVENT BLADE EXPOSURE.

ATTENTION:

POUR PREVENIR LES CHOCS ELECTRIQUES, NE PAS UTILISER CETTE FICHE POLARISEE AVEC UN PROLONGATEUR, UNE PRISE DE COURANT OU UNE AUTRE SORTIE DE COURANT, SAUF SI LES LAMES PEUVENT ETRE INSEREES A FOND SANS EN LAISSER AUCUNE PARTIE A DECOUVERT.

1. Read Instructions—All the safety and operating instructions should be read before the appliance is operated.

2. Retain Instructions—The safety and operating instructions should be retained for future reference.

3. Heed Warnings—All warnings on the appliance should be adhered to.

4. Follow Instructions—All operating and use instructions should be

followed.

5. Cleaning—Unplug this appliance from the wall outlet before cleaning. Do not use liquid cleaners or aerosol cleansers. Use a damp cloth for cleaning.

6. Do Not Use Attachments—not recommended by the manufacturer or they may cause hazards.

7. Water and Moisture—Do not use this product near water—for example, near a bathtub, wash bowl, kitchen sink, laundry tub, in a wet basement, or near a swimming pool—and the like.

8. Accessories—Do not place this product on an unstable cart, stand, tripod, bracket, or table. The product may fall, causing serious injury to a child or adult, and serious damage to the appliance.

9. Ventilation—This product should never be placed near or over a radiator or heat register. This product should not be placed in a built-in installation such as a bookcase or rack unless proper ventilation is provided or the manufacturer’s instructions have been adhered to. Any slots or openings in the cabinet are provided for ventilation. To ensure reliable operation of the video product and to protect it from overheating, these openings must not be blocked or covered. The openings should never be blocked by placing the product on a bed, sofa, rug, or other similar surface.

10. Grounding or Polarization—This product is equipped with a 3- wire line cord receptacle. It is intended for use with a 3-wire properly grounded power socket. Do not defeat the safety purpose of the supplied line cord and plug. 10A. Mise à la terre ou Polarisation—Cet appareil est équipé avec un cordon d'alimentation à trois fils. Il est a brancher sur une prise ayant un connecteur a la terre. Assurez-vous que la connection a la terre ne manque pas.

11. Power Sources—This product should be operated only from the type of power source indicated on the marking label. If you are not sure of the type of power supplied to your home, consult your appliance dealer or local power company.

12. Power-cord Protection—Power-supply cords should be routed so they are not likely to be walked on or pinched by items placed upon or against them. Pay particular attention to cords at plugs, convenience receptacles, and the point where they exit from the appliance.

13. Lightning—For added protection for this product during a lightning storm, or when it is left unattended and unused for long periods of time, unplug it from the wall outlet.

14. Power Lines—An outside antenna system should not be located in the vicinity of overhead power lines, other electric light or power circuits, where it can fall into such power lines or circuits. When installing an outside antenna system, extreme care should be taken to keep from touching such power lines or circuits as contact with them may be fatal.

ii Important Safeguards, continued

15. Overloading—Do not overload wall outlets and extension cords as this can result in a risk of fire or electric shock.

16. Object and Liquid Entry—Never push objects of any kind into this product through openings as they may touch dangerous voltage points or short-out parts that could result in a fire or electric shock. Never spill liquid of any kind on the product.

17. Servicing—Do not attempt to service this product yourself as opening or removing covers may expose you to dangerous voltage or other hazards. Refer all servicing to qualified service personnel.

18. Damage Requiring Service—Unplug this product from the wall outlet and refer servicing to qualified service personnel under the following conditions:

a. When the power-supply cord or plug is damaged. b. If liquid has been spilled, or objects have fallen into the product. c. If the product has been exposed to rain or water. d. If the product does not operate normally by following the operating

instructions. Adjust only those controls that are covered by the operating instructions. An improper adjustment may result in damage and will often require extensive work by a qualified technician to restore the product to its normal operation.

e. If the product has been dropped or the cabinet has been damaged. f. When the product exhibits a distinct change in performance—this

indicates a need for service.

19. Replacement Parts—When replacement parts are required, be sure the service technician has used replacement parts specified by the manufacturer or have the same characteristics as the original parts. Unauthorized substitutes may result in fire, electric shock or other hazards.

20. Safety Check—Upon completion of any service or repairs to this product, ask the service technician to perform safety checks to determine that the product is in proper operating condition.

21. Outdoor Antenna Grounding—Before attempting to install this product, be sure the antenna or cable system is grounded so as to provide some protection against voltage surges and built-up static charges. a. Use No.10 AWG (5.3mm No.17 AWG (1.0mm

) copper, No.8 AWG (8.4mm2) aluminum,

) copper-clad steel or bronze wire or larger, as ground wire. b. Secure antenna lead-in and ground wires to house with stand-off insulators spaced from 4 feet (1.22m) to 6 feet (1.83m) apart. c. Mount antenna discharge unit as close as possible to where lead-in enters house. d. A driven rod may be used as the grounding electrode where other types of electrode systems do not exist. Refer to the National Electrical Code, ANSI/NFPA 70-1990for information. e. Use jumper wire not smaller than No.6 AWG 13.3mm

) copper or

equivalent, when a separate antenna grounding electrode is used.

"EFFECTUER LE CABLAGE CONFORMEMENT AU CODE CANADIEN DE L' ELECTRICITE"

" INSTALL WIRING ACCORDING TO THE CANADIAN ELECTRICAL CODE"

ΕΞΑΜΠΛΕ ΟΦ ΑΝΤΕΝΝΑ ΓΡΟΥΝ∆ΙΝΓ

ΑΝΤΕΝΝΑ ΛΕΑ∆ ΙΝ ΩΙΡΕ

ΓΡΟΥΝ∆ ΧΛΑΜΠ

ΑΝΤΕΝΝΑ ∆ΙΣΧΗΑΡΓΕ ΥΝΙΤ (ΝΕΧ ΣΕΧΤΙΟΝ 810−20)

ΕΛΕΧΤΡΙΧ ΣΕΡςΙΧΕ ΕΘΥΙΠΜΕΝΤ

ΝΕΧ − ΝΑΤΙΟΝΑΛ ΕΛΕΧΤΡΙΧ ΧΟ∆Ε

ΓΡΟΥΝ∆ΙΝΓ ΧΟΝ∆ΥΧΤΟΡΣ (ΝΕΧ ΣΕΧΤΙΟΝ 810−21)

ΓΡΟΥΝ∆ ΧΛΑΜΠΣ

ΠΟΩΕΡ ΣΕΡςΙΧΕ ΓΡΟΥΝ∆ΙΝΓ ΕΛΕΧΤΡΟ∆Ε ΣΨΣΤΕΜ (ΝΕΧ ΑΡΤ 250, ΠΑΡΤ Η)

Table of Contents iii

Thank you for purchasing a Drake TR270 FM Transceiver. This transceiver has been designed and manufactured to high quality standards, and will provide reliable operation for many years.

Important Safeguards

Table of Contents

Specifications and Accessories

Introduction

General Description Safety / Voltage Selection

Installation

Unpacking Location Fixed Installation Portable / DC Power Installation Antenna Requirements Installation Diagram

Front Panel Description

Microphone Connector Wiring Sense

iii

1 1 2

4 4 4 4 4 4 5

6 7

Please carefully read the Owner's Manual in order to take advantage of the many interesting features that will provide enjoyable radio operation.

Voice Operation FM Simplex Operation Repeater Operation

Standard Offsets Custom Offsets Subaudible Tone Operation DTMF Operation To store A Phone Number To Transmit A Stored Phone Number Inband Repeat Operation Crossband Repeat Operation

Satellite Operation

Introduction To Satellite Operation The Amateur Satellites-Modes and Frequencies Doppler Frequency Shift Correction FM voice Operation With A Satellite 9600 Baud Packet Operation With A Satellite

27 27 27 27 27 28 28 29 29 29 30

31 31

33 33 33

Front Panel Display

Rear Panel Description

Getting Started

Beep Tones Getting Started (Initial Settings) Dual VFO's Direct Frequency Entry

Setup Menu

Restore Factory Setup Settings

Memory Functions

Memory Channel Programming Recalling A Memory Channel Changing Memory Channel Construct A Memeory List Locking A Memory Channel Restore Factory Memory Programming

Scan Functions

Scan Memory Scan VFO Locking A Memory Channel

12 12 12 13 13

14 14

20 20 20 20 20 21

22 23 25 26

Computer Control Computer Interface With The

RS-232C Port Command Set To Save A Report

Data / FAX Operation Data Operation With The Optional

TNC 270 (Terminal Node Controller) Fax Operation With The Optional DEMOD270

Suggested References

Glossary of Terms

Quick Reference Guide

Service

Warranty

FCC Warning

The user is cautioned that changes or modifications not expressly approved by the R. L. Drake company could void the user's authority to operate the equipment. NOTE: In order for an installation of this product to maintain compliance with the limits for a Class B device, shielded cables must be used.

38 38 40

iv Specifications and Accessories

RECEIVER 'A' (2M only)

Receive Frequency Range:

IF Frequencies:

Sensitivity:

Selectivity:

Adjacent Channel Rejection:

IMD (in band) and Spurious Responses:

144.00 - 148.00 MHz (142 - 150 MHz reduced specifications)* 1st IF: 10.7 MHz 2nd IF: 455 kHz <0.18 µV, 12dB SINAD (144 - 148 MHz) 12 kHz min. @ -6 dB

-75 dB min. @ ± 20 kHz

-80 dB min. @ ± 25 kHz

-80 dB min.

Squelch Sensitivity:

Image Rejection:

Audio Power Output:

TRANSMITTER

Transmit Frequency Range:

Transmit Power Output:

Modulation Mode:

Deviation, max.:

Spurious Emissions:

Microphone Impedance:

Antenna 2 Preamp Power:

Packet Data Rate:

Antenna Impedance:

Memory Channels:

Tuning Steps:

/ Frequency Stability:

IF Rejection:

Protection:

GENERAL

<0.10 µV

-80 dB min.

-80 dB min. 2W into 8 Ohms @ less than 5% distortion.

144.00 - 148.00 MHz (142 - 150 MHz reduced specifications)* 1/10/25 Watts (144 to 148 MHz) 16KF3E Frequency Modulation. 5 kHz peak.

-60 dBc (-80 dBc in-band). 500 Ohms. Overtemperature and high VSWR.

13.6 VDC nominal @ 100 mA 1200/9600 bps (G3RUH compatible) 50 Ohms 400 total: 100 (00-99) each receiver, A and B. 100 SAT mode 100 WXSAT mode

5, 10, 12.5, 15, 20, 25 kHz, 1 MHz ( / buttons only). ±5ppm (0

±10ppm (-100C to +500C)

to +400C)

Current Requirement, receive:

Current Requirement, transmit:

ACCESSORIES FOR THE TR270:

TNC270 module DEMOD270 module Carrying handle

Voltage Requirement:

Operating Temperature:

Case Size:

Weight:

RECEIVER 'B' (wide coverage)

Receive Frequency Range:

IF Frequencies:

Sensitivity:

Selectivity:

Adjacent Channel Rejection:

IMD: (in-band):

IF Rejection:

Image Rejection:

*142 - 150 MHz operation with proof of MARS or CAP license.

115 or 230 VAC ± 10%, 50/60 Hz, 75 Watts or 11 - 16 VDC, negative Ground.

13.6 VDC @ 1.2A, nominal.

13.6 VDC @ 8A max. (high power RF output).

-100C to +500C ambient. Width 11", Height 4-3/4", Depth 13-1/2" 13 lbs. (5.9 Kg.)

136 - 174 MHz and 420 - 470 MHz 1st IF: 18 MHz 2nd IF: 455 kHz

0.25µV/12 dB SINAD 15 kHz or 40 kHz @ -6 dB, selectable.

-60 dB min. @ ± 25 kHz, N BW

-75 dB min. @ ± 50 kHz, W BW or N BW

-75 dB min. 75 dB min. 60 dB min.

Introduction - General Description 1

MIC

TUNING

A MODE B

SQUELCH

123

REV

SAT

B BW

LOCK

STORE

CTS

RPT

DTMF

PRIO

VFO

MEM

A / B

MODE

P. OUT

SETUP

NUM

VOLUME

HOLD TO SCAN

TNC STATUS

LMH

NUM

TEMP

SCAN



DTMF

TOT

DEC ENC

DATA

VOICE

SAT

WXSAT

DATA

VOICE

LOCKED

SETUP

W



XMT



DCDCONMAIL

REV



STA

VFO 1 VFO 2

PW

MEM

RX RX

VFO 1 VFO 2

PW

MEM

TR270 FM Transceiver

POWER

DESCRIPTION

The TR270 is a table-top, base station, amateur radio 2 Meter FM Transceiver plus an additional extended range FM receiver. Microprocessor control and synthesized tuning permit full transceive capability on transmitter/ receiver ‘A’ from 144 to 148 MHz*, while receiver ‘B’ permits independent reception in the extended range of: 136 - 174 MHz, and 420 - 470 MHz. Transceiver ‘A’ is capable of 25 Watts RF output, with output power easily programmable from the front panel keypad for high, medium and low power output levels. Receiver ‘B’ is operational regardless of the receive/transmit status of transceiver ‘A’. Independent Volume and Squelch controls are provided for both the ‘A’ and ‘B’ receivers. Control of either ‘A’ or ‘B’ is via the front panel keypad and frequency tuning is accomplished by the Tuning

wheel,

/ buttons, or by direct entry for the

selected transceiver/receiver. Either receiver is capable of carrier detect or time scanning. Scanning can be by frequency limits or a memory scan. The TR270 has 400 programmable memory locations that are allocated as follows: 100 memories for Transceiver ‘A’, 100 memories for Receiver ‘B’, plus 100 additional memories assigned to ‘WXSAT’, and 100 memories for the ‘SAT’ (satellite) mode of operation. Both transceiver ‘A’ and receiver ‘B’ can operate simultaneously.

The front panel liquid crystal display provides visual feedback to the operator of the current status of the transceiver/receiver. Programming of the transceiver/ receiver's parameters is easily accomplished by the front panel display and setup menu. Parameters are adjusted and set by using the tuning wheel and keypad.

*142 - 150 MHz operation with proof of MARS or CAP license.

The unit permits DTMF and CTCSS tone encoding/ decoding of transceiver ‘A’. A hand held microphone with push-to-talk feature is included with the TR270. DTMF functions can be initiated from the TR270 front panel keypad. Both receivers permit subaudible tone decoding and/or subaudible tone filtering.

In addition to normal voice FM communication, the TR270 provides interfaces for both an internal packet TNC and an external packet TNC. The optional, internal, plug-in Drake TNC270 permits more efficient setup and improved operation than an external TNC allows, since the compatible setup commands/protocols are designed into the TR270 for the internal TNC. The packet interfaces provide for 1200 bps or G3RUH compatible 9600 bps operation. Either receiver ‘A’ or ‘B’ can be switched to either TNC interface. An RS-232C port is provided for PC control of the TR270 and TNC270. PC software is provided with the DRAKE® TNC270 option.

The optional, DRAKE® DEMOD270, AM/FM, demodulator card, can also be installed to receive weather fax (WEFAX) data, ACARS (In Flight Aircraft Reporting Service) data, or HF FAX data. Weather satellite (WXSAT) reception in the 137 MHz band is also provided by the TR270 with the DEMOD270 installed. S-Band weather satellite reception is possible with the addition of an external downconverter prior to the TR270 with DEMOD270 combination. ACARS reception requires a receiver with aircraft band coverage. HF FAX reception requires a receiver with HF band SSB coverage. The demodulated audio data stream is supplied to the TR270 RS-232C Interface connector. PC software is provided with the Drake DEMOD270 option.

2 Introduction - Safety / Voltage Selection

WARNING

NOTE: THE FOLLOWING PROCEDURE REQUIRES REMOVAL OF AN

EQUIPMENT COVER THAT EXPOSES POTENTIALLY LETHAL VOLTAGES IF

THE EQUIPMENT IS POWERED FROM AN AC POWER SOURCE. REFER

NOTE: A magnetized screwdriver facilitates the removal and installation of screws in the procedure that follows:

SERVICING TO A QUALIFIED TECHNICIAN ONLY.

A) DISCONNECT THE TRANSCEIVER FROM ITS SOURCE OF AC POWER.

B) Remove the top cover from the transceiver by removing (6) Black screws, #6-32 x 1/4" PAN PHL. Retain the cover and screws for later reassembly.

115 OR 230 VAC

SET INTERNALLY

FACTORY SET : 115 V

FUSE

LINE

3 A,250 V

115 V

SLO - BLO T 1.6 A,250 V

+13.6 V

A N T E N N A 2

RECEIVE ONLY

VHF/UHF

+13.6VDC @100 mA

SWITCHED

CAUTION:

- RISK OF FIRE REPLACE FUSE AS MARKED AFTER DISCONNECTING UNIT

FROM AC LINE.

E X T S P K R

A N T E N N A 1

RECEIVE : VHF/UHF

TRANSMIT : 144 - 148 MHz

25 WATTS

MADE IN U.S.A.

ATTENTION:

- RISQUE D'INCENDIE REMPLACEZ FUSIBLE DU TYPE INDIQUE APRES DEBRANCHER DU SECTEUR.

I N T E R F A C E

R S - 2 3 2 C

F A X /

D E M O D

INPUT

E X T E R N A L

T N C

D C I N P U T

13.6 VDC 6A

GND

230 V

50/60 Hz 75 WATTS

FUSE

C) Locate the power supply cover. Remove the cover by removing (2) Screws, #4-40 x 1/4" PAN PHL Zinc from the left-hand side of the unit and by removing (2) Nuts, Hex #M3 x 6mm from the right-hand side of the compartment cover. Remove the cover by carefully releasing it from the exposed studs at the right-hand side of the cover. Retain the cover, screws, and nuts for later reassembly.

(2) 1/4" screws

(2) hex nuts

(metric)

Power Supply

Cover

Introduction - Safety / Voltage Selection, continued 3

WARNING!!! Please read before applying power

The transceiver is normally shipped for operation on 115 VAC, 50/60 Hz AC input line voltage. If your operating voltage is different than this, please refer to FIGURE 1 on this page. An internal jumper permits changing the allowable AC input voltage to a nominal 230 VAC. In addition, the rear panel accessible mains fuse must change accordingly. Please be certain of the operating voltage before connecting the transceiver to the mains source.

_________________________________________________________________ Note: The warranty does not cover damage as a result of improper voltage selection, or replacement of the fuse with ratings other than those specified. _________________________________________________________________

WARNING

NOTE: THE FOLLOWING PROCEDURE REQUIRES REMOVAL OF AN

EQUIPMENT COVER THAT EXPOSES POTENTIALLY LETHAL VOLTAGES IF

THE EQUIPMENT IS POWERED FROM AN AC POWER SOURCE. REFER

SERVICING TO A QUALIFIED TECHNICIAN ONLY.

D) Ensure that the jumper is set for either the 115 VAC or the 230 VAC position as required for the AC Mains supply. Install the proper fuse at the rear panel of the TR270.

CAUTION

In accordance with international safety standards, this instrument is equipped with a three-wire power cable receptacle. The unit is shipped with a detachable type three-wire power cable intended for nominal 115 VAC mains supply. When connected to an appropriate power line outlet, this cable grounds the instrument cabinet. For operation of this unit on nominal 230 VAC mains supply, use the proper power cable assembly approved by your local codes. For use of this product outside the U. S. A. or Canada on supply voltages of 220 VAC or greater, the discharge resistor (4.7 Meg Ohm) connected from the neutral wire terminal of the AC input receptacle to the receiver chassis must be removed.

115 VAC

JUMPER (factory setting)

Fuse: 3A, 250V (5x20mm) SLO-BLO

(factory installed)

JUMPER

FIGURE 1 - AC Mains

Voltage Selection

230 VAC

Fuse: T1.6A, 250V (5x20mm)

E) Reinstall the power supply compartment cover by

using the cover, screws, and nuts removed in step C. F) Reinstall the transceiver top cover using the (6) Black

#6-32 x 1/4" screws PAN PHL that were removed in step B.

4 Installation

UNPACKING

Carefully remove the transceiver from the shipping carton and examine it for evidence of damage. If any damage is noted, immediately contact the transportation company responsible for delivery or return the unit to the dealer from whom it was purchased. Keep the shipping carton and all packing material for the transportation company to inspect. The original carton and packing material should be retained for repackaging should it be necessary to return the unit. Inspect the packing material for any accessories or printed material before storing the box. Locate the registration card, fill out, and immediately return to the R. L. Drake Company to insure registration and validation of warranty.

LOCATION

The location of the transceiver is not critical so long as adequate clearance is provided to allow air circulation in and around the unit, especially adjacent to the rear panel mounted heatsink. To prevent overheating, do not cover any ventilation slots in the top cover.

Side View of Transceiver

FIGURE 2 HEAT SINK

Heat Sink

PORTABLE/DC POWER INSTALLATION

For use in a portable environment, the transceiver includes an unfused external DC input connector. This connector is located on the rear panel. The transceiver will operate with a DC input voltage of 11-16 VDC. Full high power RF output during transmit is insured with a nominal supply voltage of 13.6 VDC or higher, as are supplied by typical automotive systems. The transceiver may be powered from the vehicle’s cigarette lighter socket. An approved method is to make fused wire connections at the vehicle battery. Connect DC power observing correct polarity and fusing (10 A Fast Blow maximum) to avoid possible vehicle wiring damage and/or fire. Connect the antenna(s) to the appropriate antenna input(s) using 50 Ohm coax between the antenna and the transceiver.

ANTENNA REQUIREMENTS

The receiver incorporates internal switching to allow two separate antenna systems to be connected simultaneously. The unit will transmit out the ANTENNA 1 connector only, so a resonant 2-meter antenna must be connected to ANTENNA 1. A separate single-band or multiple-band antenna can also be connected to the ANTENNA 2 connector. By simple setup programming, either of the connected antennas can be split to either receiver ‘A’ or ‘B’ for the receive mode. Additional setup programming permits dedicated antenna usage or automatic antenna selection by corresponding band, VHF/UHF, or by frequency range. The typical antennas for use with this transceiver will include Verticals, Beam, or Ground Plane types with 50 Ohm coaxial cable feeds. The best antenna will depend upon the desired frequency coverage and the intended communication link distance.

FIXED INSTALLATION

After unpacking the unit and checking that the intended AC line voltage matches the internally set range (factory set for 115 VAC) and corresponding fuse is installed, connect the antenna system to the appropriate antenna input(s). Connect AC cord to mains voltage. Connect any other external equipment at this time. Refer to Figure 3 for the diagram of a typical fixed installation.

Installation, continued 5

VERTICALS, BEAM, GROUND PLANE

+13.6 V

A N T E N N A 2

RECEIVE ONLY

VHF/UHF

+13.6VDC @100 mA

SWITCHED

CAUTION:

- RISK OF FIRE REPLACE FUSE AS MARKED AFTER DISCONNECTING UNIT FROM AC LINE.

E X T S P K R

- OR - - OR -

50 OHM COAXIAL

CABLE

PL-259

A N T E N N A 1

RECEIVE : VHF/UHF

TRANSMIT : 144 - 148 MHz

25 WATTS

MADE IN U.S.A.

ATTENTION:

- RISQUE D'INCENDIE REMPLACEZ FUSIBLE DU TYPE INDIQUE APRES DEBRANCHER DU SECTEUR.

MAX.

I N T E R F A C E

R S - 2 3 2 C

F A X /

D E M O D

INPUT

E X T E R N A L

T N C

D C I N P U T

13.6 VDC 6A

GND

ATTENTION: LOCATE ANY

RECEIVER ANTENNAS SOME DISTANCE AWAY FROM TRANSMITTER ANTENNAS TO AVOID POSSIBLE DAMAGE TO THE RECEIVER.

115 OR 230 VAC

SET INTERNALLY

FACTORY SET : 115 V

FUSE

LINE

3 A,250 V

115 V

SLO - BLO T 1.6 A,250 V

230 V

FUSE

50/60 Hz 75 WATTS

EXTERNAL

SPEAKER

TERMINAL

OR PC

TO EXTERNAL

TNC UNIT

FROM SW8, R8 SERIES RECEIVER LINE AUDIO OUT FOR CW, RTTY,

HF FAX, WE FAX RECEPTION

(with optional Drake DEMOD270)

Standard 12 VDC Power Plug (fused) (or approved accessory connector)

Vehicle 12 VDC accessory

---------- ---------

---

connection

Fuse 10 A (Fast Blow)

FIGURE 3 INSTALLATION DIAGRAM

EXTERNAL DC CONNECTOR

(supplied)

AC POWER

CORD

CONNECTION

6 Front Panel Description

8 1 2

TR270 FM Transceiver

REV +

NUM

POWER

VOLUME

SQUELCH

MIC

TEMP

SCAN



DEC

DTMF

ENC

TOT

PRIO

RPT

DTMF

NUM

HOLD TO SCAN

LOCK

123

SAT

DATA

WXSAT

VOICE

A MODE B

MEM

VFO

REV

SAT

B BW

CTS

STORE

VOICE

DATA

A / B

MODE

P. OUT

SETUP

W N

LOCKED

SETUP

LMH

VFO 1 VFO 2



DCDCONMAIL

XMT

TNC STATUS

TUNING

PW

MEM

RX RX

PW

MEM



STA

6 7 5 4 3

FIGURE 4 FRONT PANEL

1) POWER ON/OFF Switch - This switch turns the transceiver on or off. When the unit is off, the display will be blank. AC power is interrupted to the unit with the switch in the off position.

2) Display - The backlit, liquid-crystal display provides the current status of both receiver ‘A’ and ‘B’, such as operating frequency, received signal strength, relative transmit power, memory number, scan mode, simplex/ duplex operation with repeater offset sense, TNC modes/setups, etc. Refer to FRONT PANEL DISPLAY, in this manual, for a full description.

3) TUNING (VFO) - The tuning wheel and the

buttons are the primary tuning controls of the transceiver. Clockwise rotation of the tuning wheel increases frequency and counterclockwise rotation decreases frequency. The tuning wheel also incorporates two-speed tuning. Rotating the tuning wheel faster results in an increased tuning speed. The transceiver also accepts direct numeric frequency entry from the numeric keypad buttons, see Item 4.

The / buttons also function to permit setting parameters in certain programming operations. The

/ buttons are the only auto-repeating buttons.

TUNING WHEEL STEPS The transceiver can be programmed to tune in different resolutions (steps) with the corresponding display readout, as follows:

Transceiver ‘A’: 5, 10, 15, 20, and 25 kHz steps. Receiver ‘B’: 5, 10, 12.5, 15, 20, and 25 kHz steps.

/ BUTTON STEPS

The button increases and the button decreases the frequency by fixed 1 MHz steps with each

depression of the button.

In the setup mode, the tuning wheel and the

buttons permit scrolling and selection of various trans-

ceiver parameters. The tuning wheel and

buttons are also used to scroll through memory channels in the memory mode of operation.

Front Panel Description, continued 7

RPT

4) Program Buttons -

- Press once to switch the selected transceiver/

PRIO

receiver frequency to the programmed priority channel frequency. Press and hold for approximately 2 seconds to initiate the priority watch mode.

- Press once to put the selected transceiver/

VFO

receiver in the VFO tuning mode. For the selected transceiver/receiver, press this button to toggle between VFO1 and VFO2. Also, press and hold this button to initiate a VFO scan.

- Press once to recall the current memory

MEM

channel for the selected transceiver/receiver. Select memory channel by direct numeric entry or scroll

through with tuning wheel or / buttons. Press

- Press for a second function keyshift. When

NUM

pressed, the orange button functions are active, (i.e. 0-9, *, #, A, B, C, D).

- In the MEMORY mode, press this button to

LOCK

lockout the displayed memory channel during a memory scan. Otherwise, press and hold this button to lock/unlock all front panel buttons and tuning wheel entries.

- Press to store selected entries when

STORE

programming.

- Press this button to alternately direct the

A / B

tuning and other keypad operations to the ‘A’ transceiver or ‘B’ receiver.

and hold to initiate MEMORY channel scan.

- Press to manually select the repeater offset

direction or simplex.

- With the repeater status displayed, press this

REV

button to reverse the repeater input/output frequency format.

- Press to automatically configure the trans-

SAT

ceiver for the satellite communication mode.

- Press to select a programmed phone number

DTMF

for dialing. Up to 10 phone numbers can be stored.

For Transceiver ‘A’ - Press once to display the

CTS

current CTCSS tone frequency. Press a second, third and fourth time before the display times out or within approximately 3 seconds to select ‘ENC’, ‘DEC/ENC’, or no tone on transmit or receive as required. The selected state will remain operational after the display times out.

For Receiver ‘B’ - Press once to display the current CTCSS tone frequency. Press a second and third time to enable or disable ('OFF') the tone decoding as required.

- Press to select either 15 kHz or 40 kHz IF

B BW

bandwidth for receiver ‘B’. The 40 kHz bandwidth is normally used only for weather satellite FAX reception. NOTE: receiver ‘A’ bandwidth is not selectable.

- For transceiver 'A', press to select VOICE or

MODE

DATA (if TNC assigned to 'A') or STANDBY mode. For receiver 'B', press to select VOICE, DATA (if TNC assigned to 'B'), WXSAT or STANDBY mode.

- Press to set the relative transmit power output

P. OUT

level to low, medium, or high power.

- Press and hold for approximately 2 seconds to

SETUP

put the transceiver into the setup mode. The display will indicate the particular function and parameter that is being programmed. Refer to the Setup Menu section of this manual for details.

5) VOLUME/SQUELCH Controls - Independent controls permit setting the volume level and squelch threshold for receivers, ‘A’ and ‘B’.

6) Microphone Connector - Four pin microphone connector. Wiring sense is as follows:

Audio

PTT

4 +10 VDC

GND 3

Front View

7) Speaker - This is the opening for the internal speaker.

8) Headphone Jack - This connector accepts a 1/8"

mono headphone connector. The internal speaker and external speaker (if connected) are switched off when using the headphones.

8 Front Panel Display

REV +

NUM

TEMP

SCAN DTSS DTMF

TOT

REV +

DEC ENC

DATA

VOICE

SAT

WXSAT

DATA

VOICE

21 22 12 13 2 15 11 10 5 9

FIGURE 5 FRONT PANEL DISPLAY

1) 6-Digit Numeric Display Readout - This display indicates frequency, in ‘MHz’, for the ‘A’ transceiver’s current VFO, Priority, or Memory channel. Frequencies from 144.000 to 148.000 MHz will be displayed*.

2) 7-Digit Numeric Display Readout - This display indicates frequency, in ‘MHz’, for the ‘B’ receiver’s current VFO, Priority, or Memory channel. Frequencies from 136.0000 to 174.0000 MHz, or from 420.0000 to

470.0000 MHz will be displayed.

3) VFO 1/VFO 2 - Indicates the selected VFO for transceiver ‘A’.

4) /PW/MEM/ / for Transceiver ‘A’ - ‘ ’ lights to indicate operation on the Priority channel. ‘PW’ lights to indicate that the Priority Watch mode is active. ‘MEM’ lights to indicate that the MEMORY mode is selected. The Memory channel number will be displayed adjacent to ‘MEM’ in the 2-digit display.

The lights to indicate that the selected memory channel will be skipped during a memory scan.

5) VFO 1/VFO 2 - Indicates the selected VFO for receiver ‘B’.

6) /PW/MEM/ / for Receiver ‘B’ - Same functions as described for Item 4, but this section refers to receiver ‘B’.

7 & 8) TX/RX Indicators - Displays Transmit (TX) mode and relative output power level or Receive (RX) mode and the relative signal strength. Item 7 refers to Transceiver ‘A’; Item 8 refers to Receiver ‘B’.

9) TNC STATUS Indicators (for optional TNC270 use) -

XMT - TNC is in the transmit state. DCD - Data Carrier Detect indicates that a valid data stream is present.

23 24 3

LMH

VFO 1 VFO 2

LMH

LOCKED

W

SETUP

CON (connect) - TNC is connected to a station STA (status) - TNC is reporting its status MAIL - Flashes to indicate that a message is waiting.

10) LOCKED Indicator - Lights to indicate that all

keypad button functions, wheel are locked out.

11) SETUP - Lights when the transceiver is in the SETUP mode. SETUP parameters are then shown in various portions of the display as appropriate.

12) SAT - Lights to indicate that the transceiver 'A' and receiver 'B' are configured for the Satellite mode of operation.

13) WXSAT - Lights to indicate that the receiver 'B' is configured for the weather satellite mode of operation.

14) DATA/VOICE/Indicators - Separate indicators for Transceiver ‘A’ and Receiver ‘B’.

DATA - Unit is in the DATA mode which permits TNC communications. When ‘A’ is in the DATA mode, TNC audio is sent to the transmitter and the front panel MIC input is disabled.

VOICE - Unit operates as a normal audio transceiver (‘A’) or receiver (‘B’). The front panel MIC input is active when ‘A’ is in the VOICE mode.

A STANDBY mode is indicated as follows: Transceiver ‘A’ - ‘DATA’, ‘VOICE’, ‘SAT’ and the frequency readout are all turned off.

Receiver ‘B’ - ‘DATA’, ‘VOICE’, ‘WXSAT’ and the frequency readout are all turned off.



XMT

VFO 1 VFO 2

DCDCON

PW

MEM

PW

MEM



MAIL

STA

/ buttons and tuning

*142 - 150 MHz operation with proof of MARS or CAP license.

15) W/N Indicators - Wide or narrow IF filter is selected for receiver ‘B’.

16) - /+/REV Indicators - Refers to transmit offset selection.

A) ‘-’ lit: Receive frequency is displayed, transmit frequency is 600 kHz lower in frequency (unless variable offset is programmed).

B) ‘+’ lit: Receive frequency is displayed, transmit frequency is 600 kHz higher in frequency (unless variable offset is programmed).

C) ‘REV’ lit: Receive frequency is displayed; receive and transmit frequency are interchanged, regardless of offset value: ‘-’, or ‘+’.

D) Blank: Simplex mode. Transmit and receive frequencies are the same.

E) Both ‘-’, and ‘+’ lit: Variable offset-Receive frequency is displayed in the current VFO and the transmit frequency is in the other VFO.

Front Panel Display, continued 9

17) NUM Indicator - When lit, keypad is in the numeric entry mode.

18) TEMP Indicator - When lit, maximum output power is being intentionally limited to avoid possible final amplifier damage due to excessive operating temperature.

19) SCAN Indicator - When lit, unit is in a VFO or MEMORY channel scan mode.

20) DTMF Indicator - Flashes to indicate that a phone number can be changed or dialed upon transmit.

21) TOT Indicator - Time-out-timer applied to the transmitter.

22) DEC/ENC Indicators - ‘DEC’ lights to indicate that the Continuous Tone Coded Squelch System (CTCSS) is active in the receive mode. ‘ENC’ lights to indicate that the CTCSS tone is transmitted. These DEC/ENC indicators apply to transceiver ‘A’ only.

23) L/M/H Indicators - Low, medium, and high power settings for transciever ‘A’.

24)

indicates the active receiver for keypad or tuning entries.

Indicators - A around either A or B

10 Rear Panel Description

2 1 8

+13.6 V

A N T E N N A 2

RECEIVE ONLY

VHF/UHF

+13.6VDC @100 mA

SWITCHED

CAUTION:

- RISK OF FIRE REPLACE FUSE AS MARKED AFTER DISCONNECTING UNIT FROM AC LINE.

E X T S P K R

TRANSMIT : 144 - 148 MHz

A N T E N N A 1

RECEIVE : VHF/UHF

25 WATTS

MADE IN U.S.A.

ATTENTION:

- RISQUE D'INCENDIE REMPLACEZ FUSIBLE DU TYPE INDIQUE APRES DEBRANCHER DU SECTEUR.

I N T E R F A C E

R S - 2 3 2 C

F A X /

D E M O D

INPUT

E X T E R N A L

T N C

D C I N P U T

13.6 VDC 6A

GND

115 OR 230 VAC

SET INTERNALLY

FACTORY SET : 115 V

FUSE

LINE

3 A,250 V

115 V

SLO - BLO T 1.6 A,250 V

230 V

FUSE

50/60 Hz 75 WATTS

9 3 4 5 6 7

FIGURE 6 REAR PANEL

1) ANTENNA 1 - This connector is the antenna input/ output of Transceiver ‘A’. Attach a 50 Ohms nominal impedance coaxial feed line from the antenna. Ensure that the connected antenna is resonant in the 144 - 148 MHz (2-Meter) range prior to transmitting. This connector accepts a standard PL-259 plug.

2) ANTENNA 2 - This connector is the antenna input to Receiver ‘B’. Attach a 50 Ohms nominal impedance coaxial feed line from the antenna. This connector accepts a standard PL-259 plug.

3) Interface RS-232C - This 9-pin DB-9 connector provides a standard RS-232C interface to a dumb terminal or PC. Refer to the COMPUTER CONTROL section of this manual.

4) FAX/DEMOD - This RCA connector is an audio input for CW, RTTY, HF/FAX, or WEFAX encoded signals that are to be demodulated by the optional DEMOD270 demodulator module. Input impedance is a nominal 600 Ohms. Provide a nominal 250 mVolt signal level for proper operation.

5) EXTERNAL TNC - This is an 8-pin DIN connector for an optional external TNC. Refer to the TNC's Operation Manual for wiring information. The pin numbers and descriptions are as follows:

Pin#

1 2 3 4 5 6 7 8

Description

TX OUT (1200 B) GND PTT RX IN (1200 B) SQUELCH STATUS TX OUT (9600 B) RX IN (9600 B) SPARE (open)

6 3 5

Rear Panel Description, continued 11

6) DC INPUT - This connector is used for powering the TR270 from an external DC source such as a car battery. Observe proper polarity when wiring the mating connector. This input is UNFUSED and thus requires an external (10 Amp, FAST BLOW) fuse to be wired in series with the external wiring supplying this connector. The transceiver will operate with a DC input voltage of 11-16 VDC. Full high power RF output during transmit is insured with a nominal supply voltage of 13.6 VDC or higher.

7) AC Power Cord Receptacle - This receptacle accepts a three-wire power cable. When the cable is connected to an appropriate power line outlet, the instrument is grounded. The unit is factory set and fused for operation on a nominal 115 VAC, 50/60 Hz mains supply and is shipped with a cord assembly intended for 115 VAC mains supply. Be certain of the mains supply voltage prior to connecting this unit. For operation of this unit on a nominal 230 VAC mains supply, refer to the SAFETY/VOLTAGE SELECTION section in this manual for internal connections and fusing value. Also use the proper cable assembly approved by your local codes for operation of this unit on nominal 230 VAC mains supplies.

8) AC Line FUSE - This unit is factory set for operation on nominal 115 VAC mains supply and a 3A, 250 V, SLO-BLO (5 x 20 mm) fuse is installed. For operation of this unit on a nominal 230 VAC mains supply, refer to the SAFETY/ VOLTAGE SELECTION section of this manual for internal connections and fusing value.

9) External Speaker - This connector accepts a standard 1/8" diameter, 2-circuit, (monaural) phone plug for connection of an 8-Ohm external speaker. Inserting the phone plug into this connector switches off the internal speaker.

12 Getting Started

TR270 FM Transceiver

POWER

MIC

VOLUME

SQUELCH

REV +

NUM

TEMP

SCAN



DEC

DTMF

ENC

TOT

PRIO

RPT

DTMF

NUM

HOLD TO SCAN

LOCK

123

SAT

DATA

WXSAT

VOICE

A MODE B

MEM

VFO

REV

SAT

B BW

CTS

STORE

VOICE

DATA

A / B

MODE

P. OUT

SETUP

W N

LOCKED

SETUP

LMH

VFO 1 VFO 2



DCDCONMAIL

XMT

TNC STATUS

TUNING

PW

MEM

RX RX

PW

MEM



STA

SQUELCH COUNTER-CLOCKWISE

GENERAL OPERATING INFORMATION

This transceiver is easy to use. Please take a few moments to read through this section and familiarize yourself with general operating information.

BEEP TONES

The transceiver responds to all button depressions with an audible beep (unless the function is deactivated). They are as follows:

1 short tone for any button depression (if enabled within the Setup Menu). 3 short, rapid succession tones for confirmation. 1 long, low tone for any invalid button depressions.

VOLUME COUNTER-CLOCKWISE

FIGURE 7

3. Connect the transceiver to a source of AC power. Switch power on to the TR270 with the POWER switch. The front panel display should light and show VFO 1 selected for Receiver ‘A’. If the upper frequency display

is not shown (Standby condition), press the to display ‘VOICE’ in the lower left-hand portion of the

display. Note that the frequency is displayed.

4. Adjust the appropriate VOLUME control (‘A’ or ‘B’) for a comfortable listening level.

5. Tune to the desired receive frequency by using one of several methods covered in this section.

PLEASE NOTE: A ‘ ’ box around ‘A’ or ‘B’ indi-

cates whether transceiver ‘A’ or receiver ‘B’ can be tuned.

button

MODE

GETTING STARTED

1. Make certain that an antenna is connected to the appropriate rear panel ANTENNA ‘1’ connector. It is important that this antenna is resonant in the 144 148 MHz range and is capable of handling 25 Watts transmit RF power. An additional antenna can be connected to the ANTENNA ‘2’ connector at this time also, if desired.

2. Please refer to FIGURE 7 and adjust the controls as shown. Connect the microphone.

6. Adjust the SQUELCH control at any time to set the desired received signal strength required to unmute the audio. Usually this control is set to a point that just quiets the receiver when not tuned to a station, and is for example, receiving noise. Rotating the control clockwise requires stronger signals to open the squelch.

7. Prior to transmitting, set low, medium, or high power

for transmit by pressing the

P. OUT

button.

SAT

STORE

Getting Started cont'd. 13

8. Press the microphone PTT button and begin speaking. The transmitted signal frequency is displayed during transmit.

9. To receive on the ‘B’ receiver, Press the

button to

A / B

display a box around the ‘B’ (B) adjacent to the lower frequency (7-digit) readout. If the lower frequency

display is not shown (Standby condition), press the

MODE

button to display ‘VOICE’ in the lower center portion of the display. Tune to the desired receive frequency by using one of several methods covered in this section (same methods as used for the ‘A’ receiver).

DUAL VFO’s

TRANSCEIVER ‘A’ VFO 1 and VFO 2

Two VFO’s (1 and 2) are provided for the ‘A’ transceiver. Selection is made with the

button when ‘A’ is

VFO

selected. Each VFO can be set to any frequency in the ‘A’ tuning range and act as a temporary memory location.

For example, suppose you want 146.190 MHz in VFO 2 while using VFO 1 to tune other frequencies.

Press Press cies as desired. To recall VFO 2, Press the

to select VFO 2 and tune to 146.190 MHz.

VFO

to select VFO 1 and then tune other frequen-

VFO

button.

VFO

RECEIVER ‘B’ VFO 1 and VFO 2

Two VFO’s (1 and 2) are also provided for the ‘B’ receiver. Selection is made with the

button when

VFO

is displayed. Each VFO can be set to any frequency in the ‘B’ tuning range and act as a temporary memory location. Programming is the same as explained for transceiver ‘A’.

VFO 1 = VFO 2

This function is used to transfer the frequency of the active VFO into the inactive VFO. This is handy if you are tuning and would like to temporarily hold a certain frequency as you continue tuning. For example, suppose you are tuning in VFO 1 and come across a station at 146.190 MHz you would like to occasionally check.

Press the

button followed by

STORE

(3 confirmation

VFO

beeps). Continue tuning and recall the station at

146.190 MHz anytime by Pressing the

VFO

button.

FREQUENCY STEP SELECTION

- Tuning Wheel Steps Transceiver ‘A’: The transceiver can be programmed within the SETUP menu to tune in 5, 10, 15, 20, or 25 kHz steps.

The tuning wheel incorporates two-speed tuning. Rotating the tuning wheel faster, results in an increased tuning speed.

/ Button Steps

The button increases and the button decreases the frequency by fixed 1 MHz step increments with each

depression. The button may be held to auto-repeat the frequency change.

DIRECT FREQUENCY ENTRY

Direct keyboard entry of a frequency for either transceiver ‘A’ or receiver ‘B’ is possible by pressing the

NUM

button followed by the numeric buttons 0-9 (decimal point understood). With no activity, ‘NUM’ times out in approximately 3 seconds.

Transceiver ‘A’: Ensure that ‘A’ is selected. Press

NUM

followed by a numeric entry (6-digits maximum, 3-digits minimum) in the range of 144.000 to 148.000 MHz.

For example: Enter 146.190 MHz

With ‘A’ selected, Press

Press

Receiver ‘B’: Ensure that B is displayed. Press

(NUM is selected)

NUM

PRIO

RPT

SAT

PRIO

B BW

LOCK

NUM

followed by a numeric entry (7-digits maximum, 3-digits minimum) in the range of 136.0000 to 174.0000 MHz or

420.0000 to 470.0000 MHz. For example: Enter 162.4750 MHz

With ‘B’ selected, Press

Press

(NUM is selected)

NUM

PRIO

VFO

RPT

DTMF

REV

LOCK

A partial frequency may be stored quickly by using the

button. A minimum of three valid digits must be

entered. For example: Enter 144 MHz

with 'A' selected, Press

Press

(NUM is displayed)

NUM

PRIO

RPT

STORE

Receiver ‘B’: The receiver can be programmed within the SETUP menu to tune in 5, 10, 12.5, 15, 20, or 25 kHz steps.

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