Hammarlund FM50A - Component and Power Details

Tube Complement
6BS8 Receiver
Cascode RF Amplifier
6BR8
1st Oscillator/Multiplier and 1st Mixer
"
6BR8
1st IF Amplifier (10.7 mc) and Squelch Noise Amplifier
"
6BR8
2nd Oscillator and 2nd Mixer
"
6BH6
2nd IF Amplifier (1. 65 mc)
"
6BH6
1st IF Limiter
"
6BN6
2nd IF Limiter and FM Detector
"
12AX7
1st Audio Amplifier and Squelch DC Amplifier
"
6AQ5
Audio Power Amplifier
"
6BR8
Transmitter Crystal Oscillator and Phase Modulator
6AW8A
Buffer and 1st Frequency Multiplier
"
6360
2nd and 3rd Frequency Multipliers
"
6146
RF Power Amplifier
"
12AX7
1st and 2nd Audio Amplifiers
"
Semi-Conductor Complement
IN 2482
Receiver Squelch Rectifier
(2)
2N
442
Power Supply Switching Transistors
(8)
IN 1490
Power Supply High Voltage Rectifiers
IN
1490
Power Supply Relay Rectifier (AC Operation Only)
(2)
IN 2482 Transmitter Modulation Limiters
Power Requirements:
-.
Nominal Input Voltage
117 volts
6V DC*
12V DC*
(50 to
400 cycles)
Receiving-Standby 50 watts
11. 5 amps 5.75
amps
Receiving Ready to Transmit
70 watts 15
amps
7.5
amps
Transmitting
175 watts
25 amps
15
amps
Intermittent Xtal Oven Drain
4 watts
.6 amps 1.2
amps
SIZE
13" wide, 7" high, 7-3/8" deep
WEIGHT 21lbs. less antenna and power cables
* DC voltage tests are made using Electronics Industry Association Standards which are;
a) For 6 volt systems, standby voltage is 6. 8V DC and transmit voltage is 6. 3V DC.
b)
For 12 volt systems, standby voltage is 13. 6V DC and transmit voltage is 13. OV DC.
-4-
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