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Collins 75S-1

75S-1
Amateur Band Communications Receiver Rating (1-5): HHHHH (5)
Made In: United States 1958-1962 Voltages: 105-125 VAC 50-60 Hz
Coverage: Ham. See Comments. Readout: Analog Lin.
Modes: AM/LSB/USB/CW Selectivity: 4.5/2.1/_ kHz
Circuit: Double Conversion Superheterodyne. 10 Tubes plus Semiconductors. Physical: 14.75x6.675x11.5" 20 Lbs. 374x169x292mm 9 kg
Circuit Complement: 6DC6 RF Amp, 6U8A 1st Mixer/Crystal Osc, 6U8A 2nd Mixer/VFO Isolation Amp, 6BA6 1st IF Amp, 6BA6 2nd IF Amp, 6U8A Product Detector/BFO, 6AT6 AM Detector/AVC Rectifier/AF Amp, 6BF5 AF Output Amp, 6DC6 Crystal Cal., 6AU6 VFO, (2) 1N1084 Power Rect., 1N34A Freq. Shift switch. Uses 70K-2 sealed VFO. IF 2955-3155, 455 kHz.
Features: " Head. Jack S-Meter Preselector Crystal Cal. 100 kHz. RF Gain Mute Line Anti-Vox Jack CW Sidetone Jack Fiduciary Adjust
Accessories: 312B-3 Speaker, 312B-4 Station Control, 136A-1 NB, F455Q-5 500Hz CW Filter
New Price: $495-575 Used Price: $230-400
Comments: Ranges: 3.4-3.6, 3.6-3.8, 7-7.2, 7.2-7.4, 14-14.2, 14.2-14.4, 14.8-15, 21-21.2, 21.2-21.4, 21.4-21.6 and 28.5-28.7 MHz plus 2 additional 200 kHz positions for the 10 meter band. Matches the 32S-1 transmitter. The supplied 2.1 kHz filter is mechanical.
Variants: Model 75S-2 has 14 additional 200 kHz positions.
red arrow Click here to view color photo and more information or click here to view sold archive at Universal Radio.

Collins 75S-3

75S-3
Amateur Band Communications Receiver Rating (1-5): HHHHH (5)
Made In: United States 1961-1964 Voltages: 115 VAC 50-60 Hz
Coverage: Ham. See Comments. Readout: Analog Lin.
Modes: AM/LSB/USB/CW Selectivity: 4.5/2.1/.25/_ kHz -6dB.
Circuit: Double Conversion Superheterodyne. 11 Tubes plus Semiconductors. Physical: 14.75x6.675x11.5" 20 Lbs. 374x169x292mm 9 kg
Circuit Complement: 6DC6 Crystal Cal., 6DC6 RF Amp, 6U8A 1st Mixer/Crystal Osc, 6U8A 2nd Mixer/Cathode Follow, 12AX7 Q-Mult., 6BA6 1st IF Amp, 6BA6 2nd IF Amp, 6U8A Prod. Det./BFO, 6AT6 AM Detector/AVC Rectifier/AF Amp, 6BF5 AF Output Amp, 6AU6 VFO, (2) 1N1084 Power Rect, 1N34A Freq. Shift switch. Uses 70K-2 sealed VFO. IF 2955-3155, 455 kHz.
Features: " Head. Jack S-Meter Preselector Calibrator 100 kHz RF Gain Rejection Tuning Mute AGC OFF/SLO/FST BFO Anti-Vox Jack Dial Adjust CW Sidetone Jack
Accessories: 312B-3 Speaker, 312B-4 Station Console, F455Y-31 3100Hz Filter, F455Y-40 4000 Hz Filter, F455Y-60 6000 Hz Filter
New Price: $680 Used Price: $300-450
Comments: Frequency bands: 3.4-3.6, 3.6-3.8, 3.8-4, 7-7.2, 7.2-7.4, 14-14.2, 14.2-14.4, 14.8-15, 21.2-21.4, 21.4-21.6, 28.5-28.7 MHz. Matches 32S-1 transmitter.
Variants: Model 75S-3A has 14 additional 200 kHz positions and an additional knob above the band select switch.
red arrow Click here to view color photo and more information or click here to view sold archive at Universal Radio.

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