![DRAKE TR-4C Instruction Manual Download Page 32](http://html1.mh-extra.com/html/drake/tr-4c/tr-4c_instruction-manual_2527571032.webp)
Table 5-3. (Con tinued)
REF Component FUNCTION
DES
Type
Transmitter Receiver
V8, V9,
Vl0
(3)
6JB6 Matched Power Amps.
V11 6BZ6
IF Amplifier
v 1 2 12BA6
IF Amplifier
v 1 3 12AX7
AGC AGC
v 1 4 13DE7
AM Screen Modulator
v15 12BA6
IF Amplifier
V16 6GX6
9 MHz Xtal Oscillator BFO/Product Detector
v 1 7 6AQ5A
Anti V
OX
Audio Output
V18 12AX7
Mike Amplifier
v 1 9 6EV7
VoxAmp/Relay
v20
OA2 Voltage Regulator Voltage Regulator
Ql
2N5950
VFO VFO
Q2
2N3563
VFO Buffer VFO Buffer
Q3
AT5059 Neon Driver Neon Driver
Q4
2N3394
VFO Shut tiff
VFO Shut Off
Q5
2N3877
Audio Pre-Amp
Dl IN541
Balanced Modulator
D2 IN541
Balanced Modulator
D3 lN541
Balanced Modulator
D4 IN541
Balanced Modulator
D5 lN4148
V
OX
Detector
D6 lN4148 Anti V
OX
Detector
D7 lN4148
V
OX
Relay Speed Up
D8 lN714
Voltage Regulator Voltage Regulator
D9 lN4148 Output Power Detector
Dl0
lN4148 Anti V
OX
Detector
Dll
lN4148 Output Power Detector
D12
Meter Control
D13 lN4148 Transient Suppressor Transient Suppressor
D14 lN4148 AGC Isolation
5-7