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!

SON WCC-LC-6 VINTAGE 6FT AC POWER CABLE CORD BLACK
SON WCC-LC-6 VINTAGE 6FT AC POWER CABLE CORD BLACK
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Current price: $16.95 (24 bids)
TUBE  KIT  FOR  COLLINS  75A4
TUBE KIT FOR COLLINS 75A4
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Current price: $129.00 (115 bids)
COLLINS  75A-1  TUBE  KIT
COLLINS 75A-1 TUBE KIT
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TUBE  KIT  FOR  COLLINS  75A2
TUBE KIT FOR COLLINS 75A2
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TUBE  KIT  FOR  COLLINS  75A3
TUBE KIT FOR COLLINS 75A3
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1956 Print Ad of Walter Ashe Radio Co Collins 75A-
1956 Print Ad of Walter Ashe Radio Co Collins 75A-
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Current price: $8.49 (0 bids)
COLLINS 75A4 FILTER NO RESERVE HI BIDDER WINS 3.1
COLLINS 75A4 FILTER NO RESERVE HI BIDDER WINS 3.1
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Reprint Radio Manual Collins 75A-1 Receiver Lot47
Reprint Radio Manual Collins 75A-1 Receiver Lot47
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Collins 75A-4 Instruction Manual: 11’ X 23&r
Collins 75A-4 Instruction Manual: 11’ X 23&r
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Collins 75A-2 Instruction Manual: 11’ X 20&r
Collins 75A-2 Instruction Manual: 11’ X 20&r
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Collins 75A-3 Instruction Manual - Premium Card St
Collins 75A-3 Instruction Manual - Premium Card St
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Collins 75A-1 Instruction Manual: w/ 11’X17&
Collins 75A-1 Instruction Manual: w/ 11’X17&
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Very Nice Collins 75A-2 Receiver With Original Man
Very Nice Collins 75A-2 Receiver With Original Man
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Manual For Collins 75A-3 Amateur Receiver, Early
Manual For Collins 75A-3 Amateur Receiver, Early
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Vintage COLLINS 75A-2 Ham Radio Receiver: Tube-Typ
Vintage COLLINS 75A-2 Ham Radio Receiver: Tube-Typ
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GC 1400W CHICAGO DAKAWARE 11/16’ ROUND POINT
GC 1400W CHICAGO DAKAWARE 11/16’ ROUND POINT
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SSB Adapter for Collins 75A-2 and 75A-3 Receivers
SSB Adapter for Collins 75A-2 and 75A-3 Receivers
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Manual For Collins 75A-4 Amateur Receiver, Early
Manual For Collins 75A-4 Amateur Receiver, Early
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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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Collins 75A-3 160-10M AM / CW Ham Receiver + Orig
Collins 75A-3 160-10M AM / CW Ham Receiver + Orig
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Collins 75A-4 Communications Receiver w/3 Filters
Collins 75A-4 Communications Receiver w/3 Filters
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Collins 75A-4 Vintage Ham Radio Receiver w/ Mechan
Collins 75A-4 Vintage Ham Radio Receiver w/ Mechan
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 Reducer for Collins 75A-4 Receiver 4 to 1 ratio
Reducer for Collins 75A-4 Receiver 4 to 1 ratio
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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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MC 8PC SET BLACK CABINET TRIM MACHINE SCREW FOR CO
MC 8PC SET BLACK CABINET TRIM MACHINE SCREW FOR CO
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COLLINS 75A-4 - CRYSTAL - 30.5 mhz PLEASE READ!!
COLLINS 75A-4 - CRYSTAL - 30.5 mhz PLEASE READ!!
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KNOB SET for COLLINS 75A-4 RECEIVER
KNOB SET for COLLINS 75A-4 RECEIVER
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Manual For Collins 75A-2 Amateur Receiver, Early
Manual For Collins 75A-2 Amateur Receiver, Early
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AF GAIN CONTROL for COLLINS 75A-4 RECEIVER
AF GAIN CONTROL for COLLINS 75A-4 RECEIVER
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NOISE LIMITER CONTROL for COLLINS 75A-4 RECEIVER
NOISE LIMITER CONTROL for COLLINS 75A-4 RECEIVER
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AVC SWITCH for COLLINS 75A-4 RECEIVER
AVC SWITCH for COLLINS 75A-4 RECEIVER
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RF GAIN CONTROL for COLLINS 75A-4 RECEIVER
RF GAIN CONTROL for COLLINS 75A-4 RECEIVER
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Current price: $25.95 (0 bids)
COLLINS 75A-4 SERVICE AND OPERATION MANUAL
COLLINS 75A-4 SERVICE AND OPERATION MANUAL
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Current price: $10.00 (27 bids)
EXCLUSIVE CUSTOM 13 PC. BRISTOL WRENCH MASTER SET
EXCLUSIVE CUSTOM 13 PC. BRISTOL WRENCH MASTER SET
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Vintage Collins 75A-2 Short Wave AM Ham Tube Radio
Vintage Collins 75A-2 Short Wave AM Ham Tube Radio
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NOS Dakaware Number 4109 3 Inch Skirted Knob For C
NOS Dakaware Number 4109 3 Inch Skirted Knob For C
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Vintage Collins 75A Receiver - As Is - Parts / Rep
Vintage Collins 75A Receiver - As Is - Parts / Rep
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Collins 75A-1 Amateur Receiver Instruction Book -
Collins 75A-1 Amateur Receiver Instruction Book -
Ends in 21 Days 23 Hours 26 Minutes 33 Seconds
Current price: $75.00 (0 bids)

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