Collins 75A

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Art Collins founded Collins Radio Company in 1933 in Cedar Rapids, Iowa for the purpose of designing and producing both shortwave and AM broadcast radio equipment and equipment.

The company introduced their first amateur radio receiver, the 75A-1 around 1947. This unit achieved excellent stability due to high build quality and the use of a permeability tuned oscillator (PTO) in its second conversion stage. It was one of the few dual-conversion superheterodyne receivers manufactured at that time and was designed to receive only the amateur bands.

The 75A amateur line was continued throughout the early 50s, ending with the 75A-4, released in 1955. The Collins mechanical filter was introduced in the 75A-3, and the 75A-4 was one of the first receivers marketed specifically as a single sideband receiver.

In 1958 the 75A series was replaced with the much smaller 75S series, part of the S/Line. These top-end receivers featured mechanical filters, excellent stability and very accurate frequency readout.

With the introduction of the S/Line in 1958, Collins moved to an integrated equipment system, making them the first manufacturer to take this approach. Collins was also introduced a compact HF transceiver, the KWM-1, the year before. These two innovations put Collins ahead of its competition and set the stage for other amateur radio equipment makers and the next generation of HF radios.

In 1978, the S/Line came to an end after a two decade run. The KWM-380 transceiver was introduced the next year – innovative in its use of transistors and digital technology, and its styling. It was Collins’ final entry in the amateur radio market until it was discontinued in the mid-1980s.

The Collins Radio Company was purchased by Rockwell International in 1973. In 2001 the avionics division of Rockwell International was spun off to form the current Rockwell Collins, Inc., retaining its name. Rockwell Collins serves the defense and commercial avionics industries and no longer markets receivers to the public. The company today employs over 19,000 people.

More information on Collins Radio:
Wikipedia reference on Collins Radio
Collins Collectors Association
Virtual Collins Radio Museum

Collins 75A EBay Bargains!

Collins 75A-1 manual w/foldout schematic »R²
Collins 75A-1 manual w/foldout schematic »R²
Ends in 18 Hours 28 Minutes 3 Seconds
Current price: $14.95 (0 bids)
Collins 75A-2 manual (early) w/23’ schematic
Collins 75A-2 manual (early) w/23’ schematic
Ends in 18 Hours 28 Minutes 5 Seconds
Current price: $15.95 (0 bids)
Collins 75A-2 manual (late) w/19’ foldout sc
Collins 75A-2 manual (late) w/19’ foldout sc
Ends in 18 Hours 28 Minutes 8 Seconds
Current price: $14.95 (0 bids)
Collins 75A-3 manual w/19’ foldout schematic
Collins 75A-3 manual w/19’ foldout schematic
Ends in 18 Hours 28 Minutes 11 Seconds
Current price: $13.95 (0 bids)
Collins 75A-4 manual w/ service bulletins plus+++
Collins 75A-4 manual w/ service bulletins plus+++
Ends in 18 Hours 28 Minutes 13 Seconds
Current price: $16.95 (2 bids)
Manual For Collins 75A-3 Amateur Receiver, Early
Manual For Collins 75A-3 Amateur Receiver, Early
Ends in 21 Hours 59 Minutes 43 Seconds
Current price: $17.95 (0 bids)
GC 1400W CHICAGO DAKAWARE 11/16’ ROUND POINT
GC 1400W CHICAGO DAKAWARE 11/16’ ROUND POINT
Ends in 1 Days 11 Hours 38 Minutes 40 Seconds
Current price: $9.95 (16 bids)
FILTER HOLDER/CLAMP -- COLLINS 75A4 RECEIVER trans
FILTER HOLDER/CLAMP -- COLLINS 75A4 RECEIVER trans
Ends in 2 Days 17 Hours 38 Minutes 12 Seconds
Current price: $15.99 (0 bids)
Manual For Collins 75A-4 Amateur Receiver, Early
Manual For Collins 75A-4 Amateur Receiver, Early
Ends in 3 Days 10 Hours 31 Minutes 15 Seconds
Current price: $19.95 (0 bids)
Collins 75A-1 80 - 10 Meter Ham Radio Receiver for
Collins 75A-1 80 - 10 Meter Ham Radio Receiver for
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Current price: $615.00 (0 bids)
Collins 75A-2, 75A-3  NEW Chassis Mounted Replacem
Collins 75A-2, 75A-3 NEW Chassis Mounted Replacem
Ends in 3 Days 14 Hours 44 Minutes 11 Seconds
Current price: $43.99 (9 bids)
GC 4107 CHICAGO DAKAWARE 1-3/8’ SKIRTED FLUT
GC 4107 CHICAGO DAKAWARE 1-3/8’ SKIRTED FLUT
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GC 1450 CHICAGO DAKA-WARE 11/16’ ROUND RADIO
GC 1450 CHICAGO DAKA-WARE 11/16’ ROUND RADIO
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MC 8/32 3/16’ KNOB SET SCREW 20PC FOR COLLIN
MC 8/32 3/16’ KNOB SET SCREW 20PC FOR COLLIN
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Current price: $7.95 (19 bids)
SSB Adapter for Collins 75A-2 and 75A-3 Receivers
SSB Adapter for Collins 75A-2 and 75A-3 Receivers
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Collins 75A-2 NEW Capacitor Replacement Kit
Collins 75A-2 NEW Capacitor Replacement Kit
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Collins 75A-2 & 75A-3 Frequency Drum Overlay
Collins 75A-2 & 75A-3 Frequency Drum Overlay
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Collins 75A-4 Frequency Drum Overlay 15m  20.5-21.
Collins 75A-4 Frequency Drum Overlay 15m 20.5-21.
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Current price: $12.99 (25 bids)
Collins 75A-4 Frequency Drum Overlay 15m  20.8-21.
Collins 75A-4 Frequency Drum Overlay 15m 20.8-21.
Ends in 5 Days 13 Hours 43 Minutes 21 Seconds
Current price: $12.99 (44 bids)
Collins 75A-3 Amateur Receiver Manual HAM RADIO
Collins 75A-3 Amateur Receiver Manual HAM RADIO
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CEA-LCD-6 Black Vintage Non-polarized AC Cord Fits
CEA-LCD-6 Black Vintage Non-polarized AC Cord Fits
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Collins  75A-4 NOS ESCUTCHEON
Collins  75A-4 NOS ESCUTCHEON
Ends in 9 Days 18 Hours 4 Minutes 10 Seconds
Current price: $65.00 (0 bids)
Collins 75A-4, 4:1 Spinner Knob Reproduction NICE!
Collins 75A-4, 4:1 Spinner Knob Reproduction NICE!
Ends in 10 Days 4 Hours 48 Minutes 1 Seconds
Current price: $39.99 (78 bids)
MC 8PC SET BLACK CABINET TRIM MACHINE SCREW FOR CO
MC 8PC SET BLACK CABINET TRIM MACHINE SCREW FOR CO
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Current price: $7.95 (20 bids)
’Collins 75A-4 Receiver’ 2 Filters, Un
’Collins 75A-4 Receiver’ 2 Filters, Un
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Current price: $999.00 (0 bids)
COLLINS 75A-4 SERVICE AND OPERATION MANUAL
COLLINS 75A-4 SERVICE AND OPERATION MANUAL
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Current price: $10.00 (25 bids)
EXCLUSIVE CUSTOM 13 PC. BRISTOL WRENCH MASTER SET
EXCLUSIVE CUSTOM 13 PC. BRISTOL WRENCH MASTER SET
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NOS Dakaware Number 4109 3 Inch Skirted Knob For C
NOS Dakaware Number 4109 3 Inch Skirted Knob For C
Ends in 17 Days 22 Hours 24 Minutes 31 Seconds
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Collins 75A-4 Chassis Mounted Capacitor Can Nickle
Collins 75A-4 Chassis Mounted Capacitor Can Nickle
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Vintage Collins 75A Receiver - As Is - Parts / Rep
Vintage Collins 75A Receiver - As Is - Parts / Rep
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Current price: $375.00 (0 bids)
Manual For Collins 75A-1 Amateur Receiver, Early
Manual For Collins 75A-1 Amateur Receiver, Early
Ends in 19 Days 16 Hours 57 Minutes 14 Seconds
Current price: $11.95 (0 bids)
COLLINS 75A-2 RADIO RECEIVER PHOTOFACT
COLLINS 75A-2 RADIO RECEIVER PHOTOFACT
Ends in 20 Days 4 Hours 55 Minutes 29 Seconds
Current price: $12.50 (0 bids)
Collins 75A-4 160-10 M AM/CW/SSB/MCW Ham Radio Rec
Collins 75A-4 160-10 M AM/CW/SSB/MCW Ham Radio Rec
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Current price: $1,640.00 (0 bids)
Manual For Collins 75A-2 Amateur Receiver, Early
Manual For Collins 75A-2 Amateur Receiver, Early
Ends in 20 Days 17 Hours 3 Minutes 55 Seconds
Current price: $11.95 (0 bids)
Collins 75A-3 NEW Capacitor Replacement Kit
Collins 75A-3 NEW Capacitor Replacement Kit
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Current price: $64.99 (0 bids)
COLLINS 75A-2 Receiver Tube Set
COLLINS 75A-2 Receiver Tube Set
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Current price: $94.97 (3 bids)
COLLINS 75A-3 Receiver Tube Set
COLLINS 75A-3 Receiver Tube Set
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Current price: $94.97 (8 bids)
COLLINS 75A-4 Receiver Tube Set
COLLINS 75A-4 Receiver Tube Set
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Current price: $119.97 (12 bids)
GC 4104 CHICAGO DAKAWARE 1-1/8’ SKIRTED FLUT
GC 4104 CHICAGO DAKAWARE 1-1/8’ SKIRTED FLUT
Ends in 21 Days 16 Hours 4 Minutes 6 Seconds
Current price: $18.95 (26 bids)
PAIR 6L7 Tubes Westinghouse USA NOS CV1951 Heptode
PAIR 6L7 Tubes Westinghouse USA NOS CV1951 Heptode
Ends in 23 Days 17 Hours 53 Minutes 30 Seconds
Current price: $13.16 (0 bids)

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