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Specifications

Receiver
selectivity .........................

Receiver
spurious
responses ........................
 
 
 

Automatic gain control.......

2.1-kHz handwidth at 6 dB down, 5.3-kHz bandwidth at 60 dB down
 

Image rejection better than 40 dB. Internal spurious signals below one microvolt equivalent antenna input.

Audio output level does not change more than 20dB as the input signal is

 
 

Receiver
output level......................

Size ................................
 
 

.Weight.............................

change from 10 microvolts to 1 volt. Fast attack or slow release AVC action on voice and CW.

1.0 watt at AGC threshold

7-3/4 in h, 14-3/4 in w, 14 in d (19.69 cm h, 37.47 cm w, 35.56 cm d)

18 lb, 3 oz (8.25 kg).

 

6.4 TUBE AND SEMICONDUCTOR COMPLEMENT

 

Table 5-1. Tubes and Semiconductors.

 

SYMBOL FUNCTION TYPE
V 1A
 

V lB
 

V 2A

V 2B

V3A
 
 

V3B
 

V4A
 

V4B
 

V5
 

V6
 

V7

First microphone
amplifier

First receiver if
amplifier

vfo cathode follower

Tone oscillator

Microphone
amplifier cathode
follower

Second receiver If
amplifler

Transmitter If
amplifier

VOX relay
actuator

First transmitter
mixer

Second transmitter
mixer

Receiver-transmitter
rf amplifier

6 A Z8
 

6A Z8
 

6U8A

6U8A

6AZ8
 
 

6A Z8
 

6A Z8
 

6A Z8
 

12AT7
 

12AT7
 

6DC6

SYMBOL FUNCTION TYPE
V8

V9
 

V10
 

V11A
 

V11B
 

V12A

V12B
 

V13A
 

Vl3B

V14A
 
 

V14B

Transmitter driver

Transmitter power
amplifier

Transmitter power
amplifier

Beat-frequency
oscillator

Second merophone
amplifier

Crystal calibrator

Crystal oscillator
cathode follower

High-frequency
crystal oscillator

First receiver mixer

VOX rectifier (one
diode), antiVOX
rectifier (other diode)

VOX amplifier

6C6G

6146A
 

6146A
 

6U8A
 

6U8A
 

6U8A
 

6U8A
 

6U8A

6U8A

6BN8
 
 

6BN8
 
 

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