Collins S-Line

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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 S-Line EBay Bargains!

New 11 pin Octal Female Plug f/ Old Ham Radio Coll
New 11 pin Octal Female Plug f/ Old Ham Radio Coll
Ends in 7 Hours 25 Minutes 3 Seconds
Current price: $5.55 (7 bids)
Collins S-Line & KWM-2 Factory Original Feet S
Collins S-Line & KWM-2 Factory Original Feet S
Ends in 1 Days 5 Hours 8 Minutes 14 Seconds
Current price: $9.99 (157 bids)
COLLINS S LINE KNOB SET SCREWS 75S-1 75S-3B, C 32S
COLLINS S LINE KNOB SET SCREWS 75S-1 75S-3B, C 32S
Ends in 2 Days 3 Hours 29 Minutes 7 Seconds
Current price: $12.50 (0 bids)
Collins S-Line   75S-3B   Second Owner... ’W
Collins S-Line 75S-3B Second Owner... ’W
Ends in 2 Days 10 Hours 15 Minutes 48 Seconds
Current price: $850.00 (0 bids)
Collins S-Line Weighted PTO Knob Insert for PTO Kn
Collins S-Line Weighted PTO Knob Insert for PTO Kn
Ends in 2 Days 18 Hours 12 Minutes 14 Seconds
Current price: $39.99 (2 bids)
01 Collins ’S’ Line touch-up paint kit
01 Collins ’S’ Line touch-up paint kit
Ends in 3 Days 12 Hours 48 Minutes 8 Seconds
Current price: $6.95 (0 bids)
COLLINS S-LINE ALUMINUM FINAL RF CAGE FOR KWM-2A,
COLLINS S-LINE ALUMINUM FINAL RF CAGE FOR KWM-2A,
Ends in 4 Days 20 Hours 20 Minutes 51 Seconds
Current price: $65.00 (0 bids)
ORIGINAL COLLINS S-LINE 51S-1 ROUND EMBLEM PLASTIC
ORIGINAL COLLINS S-LINE 51S-1 ROUND EMBLEM PLASTIC
Ends in 4 Days 20 Hours 24 Minutes 45 Seconds
Current price: $64.97 (0 bids)
NEW STYLE 11 PIN CONNECTORS FOR COLLINS S-LINE SUP
NEW STYLE 11 PIN CONNECTORS FOR COLLINS S-LINE SUP
Ends in 5 Days 17 Hours 25 Minutes 43 Seconds
Current price: $25.99 (8 bids)
Collins S-Line & KWM-2  Stainless Hardware Set
Collins S-Line & KWM-2 Stainless Hardware Set
Ends in 5 Days 17 Hours 44 Minutes 55 Seconds
Current price: $7.99 (200 bids)
Collins S-Line & KWM-2 Factory Original Feet S
Collins S-Line & KWM-2 Factory Original Feet S
Ends in 5 Days 17 Hours 45 Minutes 31 Seconds
Current price: $28.99 (119 bids)
COLLINS S-LINE CRYSTAL 25.6-25.8 MHz  14377.5KC
COLLINS S-LINE CRYSTAL 25.6-25.8 MHz 14377.5KC
Ends in 8 Days 10 Hours 31 Minutes 24 Seconds
Current price: $14.99 (0 bids)
COLLINS S-LINE CRYSTAL 4.8-5.0 MHz  7955KC
COLLINS S-LINE CRYSTAL 4.8-5.0 MHz 7955KC
Ends in 8 Days 10 Hours 31 Minutes 26 Seconds
Current price: $14.99 (0 bids)
COLLINS S-LINE CRYSTAL 7.4-7.6 MHz  10555KC
COLLINS S-LINE CRYSTAL 7.4-7.6 MHz 10555KC
Ends in 8 Days 10 Hours 31 Minutes 29 Seconds
Current price: $14.99 (0 bids)
COLLINS S-LINE CRYSTAL 21.4-21.6 MHz  12277.5KC
COLLINS S-LINE CRYSTAL 21.4-21.6 MHz 12277.5KC
Ends in 8 Days 10 Hours 31 Minutes 30 Seconds
Current price: $14.99 (2 bids)
COLLINS S-LINE CRYSTAL 21.0-21.2 MHz  12077.5KC
COLLINS S-LINE CRYSTAL 21.0-21.2 MHz 12077.5KC
Ends in 8 Days 10 Hours 31 Minutes 31 Seconds
Current price: $14.99 (3 bids)
COLLINS S-LINE CRYSTAL 3.6-3.8 MHz  6755KC
COLLINS S-LINE CRYSTAL 3.6-3.8 MHz 6755KC
Ends in 8 Days 10 Hours 31 Minutes 33 Seconds
Current price: $14.99 (2 bids)
SOUTHCO 82-11 1/4 TURN CABINET SCREWS FOR COLLINS
SOUTHCO 82-11 1/4 TURN CABINET SCREWS FOR COLLINS
Ends in 8 Days 13 Hours 40 Minutes 21 Seconds
Current price: $9.95 (2 bids)
SOUTHCO 82-11-32 1/4 TURN CABINET SCREWS & REC
SOUTHCO 82-11-32 1/4 TURN CABINET SCREWS & REC
Ends in 8 Days 13 Hours 50 Minutes 18 Seconds
Current price: $12.95 (10 bids)
COLLINS S-LINE ZERO SET KNOB with FRICTION WASHERS
COLLINS S-LINE ZERO SET KNOB with FRICTION WASHERS
Ends in 8 Days 17 Hours 34 Minutes 56 Seconds
Current price: $21.95 (2 bids)
#3 COLLINS S-LINE VFO DIAL DISC PLATES for: KWM-2A
#3 COLLINS S-LINE VFO DIAL DISC PLATES for: KWM-2A
Ends in 8 Days 17 Hours 34 Minutes 57 Seconds
Current price: $59.00 (0 bids)
COLLINS S-LINE CRYSTAL 3.8-4.0 MHz  6955KC
COLLINS S-LINE CRYSTAL 3.8-4.0 MHz 6955KC
Ends in 9 Days 10 Hours 50 Minutes 17 Seconds
Current price: $14.99 (0 bids)
COLLINS S-LINE CRYSTAL 7.2-7.4 MHz  10355KC
COLLINS S-LINE CRYSTAL 7.2-7.4 MHz 10355KC
Ends in 9 Days 11 Hours 5 Minutes 42 Seconds
Current price: $14.99 (0 bids)
Ham Radio Collins S Line RF Voice Speech Processor
Ham Radio Collins S Line RF Voice Speech Processor
Ends in 10 Days 6 Hours 40 Minutes 28 Seconds
Current price: $165.00 (0 bids)
COLLINS S-LINE CALIBRATING FIDUCIAL WINDOW for: 32
COLLINS S-LINE CALIBRATING FIDUCIAL WINDOW for: 32
Ends in 10 Days 14 Hours 53 Minutes 13 Seconds
Current price: $29.95 (0 bids)
#1 COLLINS S-LINE VFO DIAL DISC PLATES for: KWM-2A
#1 COLLINS S-LINE VFO DIAL DISC PLATES for: KWM-2A
Ends in 10 Days 15 Hours 31 Minutes 38 Seconds
Current price: $59.95 (0 bids)
Exact match touch-up TRIM RING grey paint for Coll
Exact match touch-up TRIM RING grey paint for Coll
Ends in 11 Days 5 Hours 29 Minutes 10 Seconds
Current price: $10.00 (0 bids)
SON COL-TRMSW 8PC SET GRAY CABINET TRIM MACHINE SC
SON COL-TRMSW 8PC SET GRAY CABINET TRIM MACHINE SC
Ends in 11 Days 16 Hours 29 Minutes 57 Seconds
Current price: $7.95 (58 bids)
 SWITCHCRAFT 0.206 0.21 INCH MICROPHONE JACK PJ-06
SWITCHCRAFT 0.206 0.21 INCH MICROPHONE JACK PJ-06
Ends in 14 Days 15 Hours 9 Minutes 55 Seconds
Current price: $17.00 (25 bids)
 Exact match touch-up CASE GREY paint for Collins
Exact match touch-up CASE GREY paint for Collins
Ends in 15 Days 2 Hours 34 Minutes 48 Seconds
Current price: $10.00 (0 bids)
EXCLUSIVE CUSTOM 13 PC. BRISTOL WRENCH MASTER SET
EXCLUSIVE CUSTOM 13 PC. BRISTOL WRENCH MASTER SET
Ends in 16 Days 6 Hours 36 Minutes 21 Seconds
Current price: $26.00 (124 bids)
TRADITIONAL COLLINS S-LINE 516F-2 11 PIN CONNECTOR
TRADITIONAL COLLINS S-LINE 516F-2 11 PIN CONNECTOR
Ends in 19 Days 18 Hours 27 Minutes 2 Seconds
Current price: $29.99 (31 bids)
TRADITIONAL COLLINS S-LINE 75S RCVR 11 PIN CONNECT
TRADITIONAL COLLINS S-LINE 75S RCVR 11 PIN CONNECT
Ends in 19 Days 18 Hours 28 Minutes 41 Seconds
Current price: $29.99 (27 bids)
TRADITIONAL COLLINS S-LINE EQUIPMENT 11 PIN CONNEC
TRADITIONAL COLLINS S-LINE EQUIPMENT 11 PIN CONNEC
Ends in 19 Days 18 Hours 28 Minutes 45 Seconds
Current price: $29.99 (20 bids)
NEW STYLE 11 PIN CONNECTORS FOR COLLINS S-LINE 32S
NEW STYLE 11 PIN CONNECTORS FOR COLLINS S-LINE 32S
Ends in 19 Days 18 Hours 28 Minutes 49 Seconds
Current price: $25.99 (45 bids)
RUBBER FEET For ELECTROVOICE #419 BASE 664 DESK MI
RUBBER FEET For ELECTROVOICE #419 BASE 664 DESK MI
Ends in 21 Days 21 Hours 2 Minutes 43 Seconds
Current price: $9.99 (0 bids)
Pair Mallory SCA-2A mate for PJ068  phone jacks Co
Pair Mallory SCA-2A mate for PJ068 phone jacks Co
Ends in 22 Days 10 Hours 30 Minutes 29 Seconds
Current price: $14.95 (0 bids)
Collins S-Line & KWM-2 Factory Original Feet S
Collins S-Line & KWM-2 Factory Original Feet S
Ends in 25 Days 7 Hours 20 Minutes 52 Seconds
Current price: $5.99 (55 bids)
Collins S-Line 516F2 Power Supply Cabinet
Collins S-Line 516F2 Power Supply Cabinet
Ends in 25 Days 12 Hours 29 Minutes 40 Seconds
Current price: $250.00 (0 bids)
Collins S-Line 75S1, 75S2, 75S3 Filter wide AM (45
Collins S-Line 75S1, 75S2, 75S3 Filter wide AM (45
Ends in 26 Days 12 Hours 42 Minutes 33 Seconds
Current price: $90.00 (0 bids)

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