Racal Instruments PRC-41 User Manual Download

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RT695A - PRC-41

Manpack UHF transceiver

1963

Either the battery or the ac power supply can be attached to the RT695.

Both have the same size (28 x 10.5 x 19 cm) and weight ( 7.5 kg)

The battery must be charged with a special charger, not this PP-3700

Battery
BB-451/ U

  Receiver-Transmitter
     RT-695 / PRC-41
  size 28 x 10.5 x 35 cm
   weight  10,5 kg

Power Supply
PP-3700

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Summary of Contents for PRC-41

Page 1: ...r supply can be attached to the RT695 Both have the same size 28 x 10 5 x 19 cm and weight 7 5 kg The battery must be charged with a special charger not this PP 3700 Battery BB 451 U Receiver Transmit...

Page 2: ...500 cps from 1000 cps reference 11 Audio distortion Less than 10 percent at 50 mw output e GUARD RECEIVER DATA 1 Sensitivity A signal having an average level of 5 uv into the guard receiver modulated...

Page 3: ...tal oven simplified squelch circuits and only 2W RF output Versions The RT695A has a slightly modified audio circuit to allow voice encryption using the external crypto unit KY 38 Battery The battery...

Page 4: ...IC 3d IF First 2nd IF 15 8 2 9 C D D 3 5 1 Guard 3 9 6 7 6 10 1 2 1mH 1 A Tx relays Rx 180V Push to talk 39 1k2 1k2 3 6 8V 1N159 15 F 5 7077 7554 7554 7077 1 2 3 6 7077 180V 180 Mod 4 7 9 26 V 6 10 MO...

Page 5: ...pp into 300 measured 1 7 19V 3 5mA 8V 4V 1V 35mA 10k VOL 10 2x 18 2x 1k2 106 18 PRC 41 MODULATOR 18 jan 2018 kb 4 5 4 5 3 47 430 mike bias T2 T1 To RF PWR AMPL Z 3k 100 1k 820 6k8 2k7 side tone 180V 2...

Page 6: ...9 J10 J3 J1 J2 J7 J1 J1 225 400 MHz First IF 20 30 MHz Z1 Z4 Z5 1 2 13dBm 1Vrms 470 p 2 2 470p 500 6p 4 20 20 2 2 20 2 22k 0 22 10p Testpoint 1M series resistor and 500pF feedtru not shown 51 10k 100...

Page 7: ...nal to third IF 2nd IF filter 2 9 3 9 MHz 17 1 19 1 21 1 18 1 20 1 MHz 26 1 24 1 22 1 25 1 23 1 MHz 2 9 3 1 3 3 3 0 3 2 MHz 3 8 3 6 3 4 3 7 3 5 MHz 10n 10n 1n 10nF 43p 4k7 Tx 25V 30mA AVC A3 A2 A1 1 6...

Page 8: ...Q11 2N329 Q10 2N916 Q12 2N718 1N753A 6 2V 1N753A 10k 220R R52 100k 12k 2k2 10k 10k 1k8 4k7 Q14 2N697 1k 2k7 1k R46 Audio output 9 27V 50mA input 6 Tuneable from 239 248 MHz 222 44 MHz 111 22 MHz doub...

Page 9: ...F 15V 1n 220p 1n 220p 0 5mH 4k7 4k7 2k7 1mH 1mH 100 560 560 Input 24 5Vdc 4k7 2 2uF 4 7uF NOISE LIMITER CONTROL 10k 20k 2u2 2u2 2u2 2k2 100k 220 150 12k Q5 2N2219 Q10 2N2905 Q9 2N1613 Aux audio auto r...

Page 10: ...14 uH B C P1 P2 P3 To RT695 PRC 41 From vehicle battery 660uF 60V A F B G E C D 115V 1 6AT 45V 115V 1 6AT 3k3 39k 33uF 1k 5k6 33V 1k 560 15 15 68 68 330 820 26 5V 4A Q3 2N2113 Q2 2N1896 Q1 2N1893 48V...

Page 11: ...ble with one set The basic PRC 41 has two of these 10 way connectors all pins are connected in parallel The PRC 41A only has one 10 way connector The other one is a 19 way connector which connects to...

Page 12: ...Antenna filter in the PRC 41 BAND PASS FILTER 225 400 MC PN 241 0467 00 model 5364 BIRD ELECTRONIC CORP CLEVELAND OHIO 0 100 200 300 400 500 600 MHz dB 0 10 20 30 40 50 60 antenna Rx Tx SMA mini BNC...

Page 13: ...attery contains 16 series connected cells with a nominal cell voltage of 1 5 volts producing a total nominal battery voltage of 24 volts Each group of four cells is combined within separate plastic ca...

Page 14: ...ife b Low Temperature Sensitivity The performance of the battery is seriously affected by low tem peratures At temperatures below approximately 35 C 31 F the battery effectively ceases to operate c Hi...

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