Make
General Radiotelephone
Model
SB-72
Year
~1963
Description
The General Radiotelephone model SB-72 is a 13 tube single sideband transceiver. General was way ahead of there times when they built this radio. This radio was one of the first SSB 11 meter radios in America. It has 24 channels with USB, LSB, and AM. The receiver is Dual conversion. It also has the great COLLINS mechanical filter! They only use one crystal for transmit and receive. Super nice radio!
Receiver Type
Superheterodyne
TX Channels
5 watts input
Freq Range
Citizens Band; 26.965 - 27.255 MC
Civil Air Patrol; 26.620 MC
Mode
AM
Power Input
12.5 VDC; Rec. 7.5 amps, Trans 8.6 amps
115 VAC Rec. 90 watts, Trans. 120 watts
Dimensions
5-3/8 x 10-1/8 x 12 inches
Weight
17-1/2 lbs
Tube Complement
v1 | 1st and 2nd Audio |
12AT7 |
v2 | 456.35 KC Osc and Cathode Follower |
6EA8 |
v3 | Audio Output and Detector |
6AL11 |
v4 | DSB and SSB Audio Amplifier |
6CW4 |
v5 | Amp and DSB Audio Amplifier |
6EA8 |
v6 | Mixer |
12AT7 |
v7 | IF Amplifier |
6AR11 |
v8 | Amp and Mixer |
6AR11 |
v9 | 2nd Osc and Mixer |
6EA8 |
v10 | Channel Osc and Mixer |
6EA8 |
v11 | Amp Driver and RF Amp |
6AR11 |
v12 | Power Amplifier |
6BH5 |
v13 | DSB Mod |
6AQ5 |