Western Electric 407A-4, Инструкция по эксплуатации

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General
29
Installation Notes
31
To Drain System Completely 34
To Fill System
35
Automatic Drainage of Cool ing Units
35
Adjus tment of Water-Cooling System 36
RADI O-FREQUENCY CIRCUITS 39
D-99110 Os cillator Amplifier 39
Circuit Desc ription 39
Os cillators 39
First Radio-Frequency Amplifier Stage 40
S econd Radio-Frequency Amplifier Stage 41
Third Radio-Frequency Amplifie r Stage 42
Audio Amplifier 42
Power-Supply Circu its 43
Circuit Adjustment 43
Preliminary
43
First Radio-Frequency Amplifi er Tuning 44
Second Radio-Frequency Amplifier Tuning 45
Third Radio-Frequency Amplifi er Neutral iz ati on 45
Third Radio-Frequency Ampl ifi er Tuning 46
Final Adj ustment of the Second
RF
Amplifi er
47
Adjustment of S liders on R61A 48
Adjustment of Feedback and Associated Circuits 49
Audio Monitoring Rectifie r 50
D-99117 Modulating Amplifie r 5 1
C ircuit Des cription 51
Adjustment of Input Circuit 53
Neutraliz ation
53
Output C ircuit Tuning 54
D-9 9118 Power Amplifier Unit 55
C ircuit Des c ription 55
C ircuit Adjustment 57
Preliminary
.Antenna-Coupling Equipment 57
Harmonic-Suppres s ion Line Adjustment 57
Tuning of Output Circuit 5 8
Adjustment o f Harmonic Filter 5 8
Adjustment o f Load Impedances 59
Tuning of Grid C ircuit 60
Final Tuning of D-99118 Power Amplifier 6 1
Adjustment o f Radio-Frequency Protectiv e
Circuit
6 3
Modulating the Transmitter 65
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