1.1. GENERAL.
1.1.1 This instruction book describes the installation, operation, and maintenance of the Collins 32V-3 amateur transmitter.
The type 32V-3 transmitter is a small, compact, VFO controlled unit featuring complete bandswitching and is capable of CW and phone operation on all amateur bands between 3.5 and 29.7 megacycles. Final plate power input of 120 watts phone and up to 150 watts CW is possible. Extra shielding and filtering is employed to minimize possibility of interference to other services. In fringe areas where television signals are very weak, certain installations may experience interference. In this event a low-pass filter such as the Collins Model 350-2 should be installed in the antenna lead at the transmitter. Installation of a high-pass filter in the television receiver antenna lead may prove helpful.
The 32V-3 transmitter is designed for table mounting. The complete transmitter is housed in a single cabinet 21-1/8" wide, 12-1/4" high and 13-13/16" deep and weighs approximately 110 Ibs. Openings are provided to assure adequate ventilation for all heat producing elements.
Transmitter components are divided into the five units named below.
70E-8A Oscillator
R-F Unit
Output Network
Speech Amplifier and Modulator
Power Supply
All wiring is independent of the cabinet, and the complete unit may be removed from the cabinet for inspection or maintenance.
Complete coverage of the 80, 40, 20, 15, 11 and 10 meter bands is obtained with the 32V-3. Quick band-change on all stages is accomplished by bandswitching. Tuning controls of the permeability tuned circuits of the 1st, 2nd, and 3rd multipliers are ganged with the oscillator. The final tank consists of impedance matching network with two separate controls located on the front panel, one for tuning and one for loading.
Two heavy duty toggle switches
control the low voltage and high voltage circuits. The switches are
so arranged that the high voltage cannot be applied until the low voltage
circuits have been energized.
Power Source:
115 volts sc 50/60 cps single phase.
Power Input Requirements:
The maximum overall input power requirement is 500 watts at 90%
power factor.
PA Plate Power Input:
The nominal rated power input of the 32V-3 is 120 watts on
phone and 150 watts CW.
Audio Distortion:
Audio distortion is less than 8% at 90% modulation with a 1000 cps
input frequency.
Frequency Response:
Within 2 db from 200-3000 cps.
1.3. TUBE COMPLEMENT.
| Quantity | Tube Type | Function |
| 1 | 6SJ7 | Oscillator |
| 1 | 6AK6 | Buffer Amplifier |
| 1 | 6AG7 | First Multiplier |
| 1 | 7C5 | Second Multiplier |
| 1 | 7C5 | Third Multiplier |
| 1 | 4D32 | RF Power Amplifier |
| 1 | 6SL7 | Audio Amplifier |
| 1 | 6SN7 | Audio Driver |
| 2 | 807 | Modulators |
| 1 | 5Z4 | LV Rectifier |
| 2 | 5R4GY | HV Rectifier |
| 1 | VR-75 | Bias Regulator |
| 2 | 0A2 | Screen Voltage Limiters |