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Racal TRA-931

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Mobile Shortwave Transceiver

The Racal TRA-931 is a manpack HF transceiver. Frequency selection is done by way of 5 decade switches giving a 1 kHz resolution. A search knob allows further tuning within the 1 kHz range.
The TRA-931 housing is made from industrial strength plastic and is water tight. The front panel has 2 connectors for mic/phones/keyer, AF-gain knob, mode-knob and small battery voltage indicator. A number of antennas can be connected to the TRA-931 which can be tuned with an internal antenna tuner (TRA-931A). For ham use 2 BNC connectors for 1.6-3 and 3-30 MHz are very suitable.

Variants
TRA931: Syncal 30
TRA931A: As standard set plus auto ATU
TRA931AP: Programmable version of TRA931A
TRA931L: Low temperature version of TRA931 -40 dec C
TRA931P: Programmable Syncal 30 2-8 Mhz 49ch 20W **
TRA931PL: Low temperature version of TRA931P
TRA931PR: Capable of remote control
TRA931X: Multi-role Syncal 30
TRA931XH: Frequency Hopping version of TRA931
TRA931Y: As TRA931X but with component changes for operation at lower temperatures. -25 deg C

Specifications
Type
Mobile Military HF Transceiver 
Frequency range RX
1.6-29.999 MHz 
TX
1.6-29.999 MHz 
Frequency stability
better than ±2 ppm 
Tuning steps
1 kHz 
Filters
Receiver
Modulations
AM / CW / USB / LSB 
Sensitivity
1 µV for S/N > 10 dB 
Selectivity
SSB: 2 kHz (-6 dB), 6 kHz (-40 dB)
AM: 10 kHz (-6 dB), 30 kHz (-55 dB) 
Receiver system
IF-frequencies
Image rejection
Audio output
Transmitter
Modulations
AM / CW / USB / LSB 
RF-output
5/20 W (PEP) 
Connections
Antenna
BNC + Proprietary (militaire 
Impedance
50Ω 
Electrical
Power requirements
24V DC (operates down to 12V DC) 
Current drain RX
250 mA 
TX
4 A 
Physical
Dimensions (w×h×d)
366 × 116 × 275 mm (14.41 × 4.57 × 10.83 in)  
Weight
5 kg (11 lbs) in basic configuration 
Form factor
Mobile 
Manufactured
Between 197x and 19xx in Great Britain 
Other features
Memories
Usage
Military communication 
Manufacturer
Racal 
Model
TRA-931
Features
 
Manuals, Diagrams and Brochures
 
None available  
 
 
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