Collins 32V-3 
Tube List: 0A2 (2), 0A3/VR75 (1), 5R4GY (2), 5Z4 (1), 6AG7 (1), 6AK6 (1), 6SJ7 (1), 6SL7 (1), 6SN7 (1), 7C5 (2), 807 (2), 4D32 (1). Description: The 32V-3 transmitter is VFO controlled and features bandswitching on all amateur bands between 3.5 and 29.7 megacycles. The rated plate input power is 120 watts phone and 150 watts CW. Shielding and filtering are employed to minimize the possibility of television interference. The 32V-3 transmitter is a table top unit housed in a single cabinet 12 1/4" high, 21 1/8" wide and 13 13/16" deep. It weighs approximately 110 Ibs. Cabinet openings are provided to assure adequate ventilation for all heat producing elements. The transmitter components are divided into the following units: 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. A type 4D32 tetrode power amplifier tube is used in the PA stage. The plate circuit is tuned by a combination pi-network and "L" network which is band switched along with the multiplier stages. This network reduces the output impedance to around 50 ohms on all bands by means of inductance and capacitance switching. The output network can match antenna impedances in the range of 26 to 600 ohms. Two heavy duty toggle switches control the low voltage and high voltage circuits. The switches are arranged so that the high voltage cannot be applied until the low voltage circuits have been energized. Specifications: POWER SOURCE: 115 volts AC, 50/60 cps, single phase. POWER INPUT REQUIREMENTS: The maximum overall input power requirement is 500 watts at 90% power factor. PA PLATE INPUT POWER: 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. DIMENSIONS: 12 1/4 in. high, 21 1/8 in. wide, 13 13/16 in. deep. WEIGHT: 110 lbs. |
