- United States of America (USA)
- Manufacturer / Brand
- Collins Radio Company; Cedar Rapids (IA)
- Amateur-Receiver (amateur bands, may include broadcast bands)
- Radiomuseum.org ID
Click on the schematic thumbnail to request the schematic as a free document.
- Number of Tubes
- Valves / Tubes
- 6BA6 6DC6 6BA7 12AT7 6BA7 6BA6 12AX7 6BA6 6BA6 6AL5 12AU7 6AL5 12AT7 6BA6 6BA6 6AL5 5Y3GT 0A2 6AL5 6BA6 6BA6 6AQ5
- Main principle
- Superhet, double/triple conversion; ZF/IF 2500-1500/455 kHz
- Wave bands
- Short Wave (SW only)
- Power type and voltage
- Alternating Current supply (AC) / 105 - 125 Volt
- - This model requires external speaker(s).
- Power out
- 0.75 W (unknown quality)
- Metal case
- from Radiomuseum.org
- Model: 75A-4 - Collins Radio Company; Cedar
- Tablemodel, with any shape - general.
- Dimensions (WHD)
- 17.25 x 10.5 x 15.5 inch / 438 x 267 x 394 mm
Collins 75A-4 Amateur - Band Receiver: Double conversion, AM,CW, SSB, NB-FM optional, eight amateur bands from 160 - 10 meters (1,5-2,5 / 3,2-4,2 / 6,8-7,8 / 14-15 / 20,8-21,8 / 26,5 - 27,5 / 28-29 and 29-30 MHz), mechanical 3 kHz filter (F-455J-31), optional mechanical 6 kHz (F-455J-60) and 800 Hz (F-455J-05) filters, four step crystal filter, two speed AGC, passband tuning, noise limiter, crystal calibrator.
Matches KWS-1 transmitter. Matching speaker 270G-3.
First single-sideband amateurband-receiver of the world, around 5840 sets were made, below 200 of them at Collins Toronto, Ontario, plant.
- Net weight (2.2 lb = 1 kg)
- 15.9 kg / 35 lb 0.4 oz (35.022 lb)
- Price in first year of sale
- 495.00 $
- External source of data
- Eilert Menke
- Source of data
- Shortwave Receivers - Past & Present (3rd ed.)
- Literature/Schematics (1)
- QST (April 1955)
- Literature/Schematics (2)
- Communications Receivers
- Model page created by a member from D. See "Data change" for further contributors.
- Other Models
Here you find 95 models, 70 with images and 32 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Collins Radio Company; Cedar Rapids (IA)