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!

TUBE  KIT  FOR  COLLINS  75A4
TUBE KIT FOR COLLINS 75A4
Ends in 1 Hours 22 Minutes 35 Seconds
Current price: $129.00 (149 bids)
COLLINS  75A-1  TUBE  KIT
COLLINS 75A-1 TUBE KIT
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Current price: $89.00 (41 bids)
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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Current price: $109.00 (29 bids)
Collins 75A-2 Receiver Manual w/photocopy
Collins 75A-2 Receiver Manual w/photocopy
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Current price: $27.95 (0 bids)
Collins 75A-2, 75A-3  NEW Chassis Mounted Replacem
Collins 75A-2, 75A-3 NEW Chassis Mounted Replacem
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Current price: $47.99 (12 bids)
Collins 75A-2 Signature Series Ham Radio Amateur R
Collins 75A-2 Signature Series Ham Radio Amateur R
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Vintage 1954 COLLINS 75A-3 Receiver Ham Radio Prin
Vintage 1954 COLLINS 75A-3 Receiver Ham Radio Prin
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Collins 75A-4 HF-Bands Ham Radio Receiver Amateur
Collins 75A-4 HF-Bands Ham Radio Receiver Amateur
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Vintage 1952 COLLINS 75A-2 Receiver Ham Radio Prin
Vintage 1952 COLLINS 75A-2 Receiver Ham Radio Prin
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Vintage 1954 COLLINS 75A-3 Receiver Ham Radio Prin
Vintage 1954 COLLINS 75A-3 Receiver Ham Radio Prin
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Vintage 1954 COLLINS 75A-3 Receiver Radio Print Ad
Vintage 1954 COLLINS 75A-3 Receiver Radio Print Ad
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Collins 75A-4 Chassis Mounted Capacitor Can Nickle
Collins 75A-4 Chassis Mounted Capacitor Can Nickle
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GC 1400W CHICAGO DAKAWARE 11/16’ ROUND POINT
GC 1400W CHICAGO DAKAWARE 11/16’ ROUND POINT
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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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Collins 75A-2 Vintage Ham Radio Receiver
Collins 75A-2 Vintage Ham Radio Receiver
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Collins 75A-4 Ham Radio Receiver w/ Original Manua
Collins 75A-4 Ham Radio Receiver w/ Original Manua
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Collins 75A-4 Receiver
Collins 75A-4 Receiver
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GC4107 CHICAGO DAKAWARE 1-3/8’ CHIP SKIRTED
GC4107 CHICAGO DAKAWARE 1-3/8’ CHIP SKIRTED
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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-2 Vintage Ham Radio Receiver
Collins 75A-2 Vintage Ham Radio Receiver
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COLLINS 75A-4 SERVICE AND OPERATION MANUAL
COLLINS 75A-4 SERVICE AND OPERATION MANUAL
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1-RCA JAN CRC 6L7 Vacuum Tube NOS/NIB Tested for C
1-RCA JAN CRC 6L7 Vacuum Tube NOS/NIB Tested for C
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COLLINS 75A-3 RADIO PARTS: CW LIMITER POT 75A-2 75
COLLINS 75A-3 RADIO PARTS: CW LIMITER POT 75A-2 75
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Collins 75A-3 Radio Receiver Bundle with Original
Collins 75A-3 Radio Receiver Bundle with Original
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Collins 75A-3 Amateur Ham Radio Receiver Orig Fact
Collins 75A-3 Amateur Ham Radio Receiver Orig Fact
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Current price: $124.99 (0 bids)
Collins 75A-2 Amateur Ham Radio Receiver Orig Fact
Collins 75A-2 Amateur Ham Radio Receiver Orig Fact
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Current price: $124.99 (0 bids)
GC 4104 CHICAGO DAKAWARE 1-1/8’ SKIRTED FLUT
GC 4104 CHICAGO DAKAWARE 1-1/8’ SKIRTED FLUT
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Current price: $19.95 (59 bids)
Collins 75A-4 Receiver And Henson Speaker In Colli
Collins 75A-4 Receiver And Henson Speaker In Colli
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COLLINS 75A-2 Receiver Tube Set
COLLINS 75A-2 Receiver Tube Set
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COLLINS 75A-3 Receiver Tube Set
COLLINS 75A-3 Receiver Tube Set
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Current price: $94.97 (0 bids)
COLLINS 75A-4 Receiver Tube Set
COLLINS 75A-4 Receiver Tube Set
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Current price: $201.97 (0 bids)
Collins 75A-4 (3 Filters) & 312A-1- Excellent
Collins 75A-4 (3 Filters) & 312A-1- Excellent
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Current price: $3,500.00 (0 bids)
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)
RARE COLLINS 75A-2 FRONT DIAL ESCUTCHEON
RARE COLLINS 75A-2 FRONT DIAL ESCUTCHEON
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FRONT PANEL for COLLINS 75A-2 RECEIVER
FRONT PANEL for COLLINS 75A-2 RECEIVER
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Collins 75A-4 Receiver
Collins 75A-4 Receiver
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Current price: $1,999.99 (0 bids)
Collins 75A-2 NEW Capacitor Replacement Kit
Collins 75A-2 NEW Capacitor Replacement Kit
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Current price: $69.99 (35 bids)
Collins 75A-4 NEW  26 Piece Capacitor Replacement
Collins 75A-4 NEW 26 Piece Capacitor Replacement
Ends in 14 Days 2 Hours 58 Minutes 19 Seconds
Current price: $169.99 (88 bids)

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