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RTS Telex


UHF Single-Channel Wireless Transceiver

Bat/Overmod Light (BAT/OM)

Light will flash once when unit is turned on if the battery is good. If the light stays on, battery is low. If the light does not flash, battery is dead. A normal microphone gain setting will cause the LED to flash at the beginning of most words at normal speech levels. If the gain is too high, the LED will be red during the complete word at normal speech levels.

On/Off Volume Control

Turns the beltpack power on and controls head set volume

Talk Button

Press to enable the audio path to either Intercom Channel A or B or A + B, from the local headset microphone. The associated “TALK” LED, #6, will turn red when enabled. A quick press and release latches the talk function, unless latching has been disabled. Holding the button for over ½ second, will cause the audio path to be enabled only for as long as the button is held. If the talk function is latched on, pressing the talk but ton again will turn it off.

Talk Light

Will turn red when enabled by associated TALK or WTA button
Antenna ¼ Wave (supplied), Screw type, Replaceable TX/RX
Color Black
Current Draw 140 mA Push-to-Talk, Talk On
Depth 1.65" (41.9 mm)
Distortion < 1 % at full deviation
Form Factor Beltpack
Frequency Band of Operation 518 - 608 MHz, 614 - 740 MHz, 796 - 868 MHz in 18 MHz TX and RX bands
Frequency Response 300 Hz-8 kHz
Function User Station
Height 5.05" (128.3 mm)
IF Selectivity 3 dB at 230 kHz
Image Rejection 70 dB or better
Local Headset Output 40 mW output into 600Ω 1% Distortion
Microphone Input Sensitivity 7 mV
Power Requirements 6 “AA” Cells Alkaline (NiMH optional)
RF Frequency Stability 0.01 %
RF Sensitivity < 0.7 μV for 12 dB SINAD
Squelch Quieting 90 dB
Squelch Threshold 20 dB SINAD
Storage Temperature -4°F to 130°F (-20°C to 55 °C
Transmit Power 50 mW Max. Auto-power reduction
Type Dual Conversion Superheterodyne, four Independent Synthesized IFs, FM, 712 channels each
Weight 16 oz (453.59 g)
Width 3.75" (95.3 mm)


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