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!

10 PIECE BRISTOL WRENCH SET FOR COLLINS S-LINE, A-
10 PIECE BRISTOL WRENCH SET FOR COLLINS S-LINE, A-
Ends in 1 Days 12 Hours 28 Minutes 29 Seconds
Current price: $20.00 (38 bids)
TRADITIONAL COLLINS S-LINE 516F-2  POWER SUPPLY 11
TRADITIONAL COLLINS S-LINE 516F-2 POWER SUPPLY 11
Ends in 1 Days 12 Hours 32 Minutes 48 Seconds
Current price: $29.99 (22 bids)
Ham Radio Collins S Line RF Voice Speech Processor
Ham Radio Collins S Line RF Voice Speech Processor
Ends in 1 Days 23 Hours 25 Minutes 55 Seconds
Current price: $165.00 (0 bids)
NEW STYLE 11 PIN CONNECTORS FOR COLLINS S-LINE 75S
NEW STYLE 11 PIN CONNECTORS FOR COLLINS S-LINE 75S
Ends in 2 Days 11 Hours 38 Minutes 41 Seconds
Current price: $25.99 (35 bids)
NEW STYLE 11 PIN CONNECTORS FOR COLLINS S-LINE POW
NEW STYLE 11 PIN CONNECTORS FOR COLLINS S-LINE POW
Ends in 2 Days 11 Hours 38 Minutes 53 Seconds
Current price: $25.99 (9 bids)
TRADITIONAL COLLINS S-LINE 75S RECEIVER 11 PIN CON
TRADITIONAL COLLINS S-LINE 75S RECEIVER 11 PIN CON
Ends in 2 Days 11 Hours 39 Minutes 54 Seconds
Current price: $29.99 (2 bids)
Exact Match Touch-Up Paint For Collins S Line Fron
Exact Match Touch-Up Paint For Collins S Line Fron
Ends in 4 Days 1 Hours 34 Minutes 23 Seconds
Current price: $23.95 (0 bids)
NEW STYLE 11 PIN CONNECTORS FOR COLLINS S-LINE SUP
NEW STYLE 11 PIN CONNECTORS FOR COLLINS S-LINE SUP
Ends in 8 Days 11 Hours 43 Minutes 15 Seconds
Current price: $25.99 (8 bids)
COLLINS S-LINE ALUMINUM FINAL RF CAGE FOR KWM-2A,
COLLINS S-LINE ALUMINUM FINAL RF CAGE FOR KWM-2A,
Ends in 10 Days 16 Hours 8 Minutes 9 Seconds
Current price: $59.00 (0 bids)
SOUTHCO 82-11 1/4 TURN CABINET SCREWS FOR COLLINS
SOUTHCO 82-11 1/4 TURN CABINET SCREWS FOR COLLINS
Ends in 11 Days 7 Hours 57 Minutes 53 Seconds
Current price: $9.95 (3 bids)
SOUTHCO 82-11-32 1/4 TURN CABINET SCREWS & REC
SOUTHCO 82-11-32 1/4 TURN CABINET SCREWS & REC
Ends in 11 Days 8 Hours 7 Minutes 50 Seconds
Current price: $12.95 (14 bids)
LOOKS ALMOST UNUSED GENUINE COLLINS SM-2 DESK TOP
LOOKS ALMOST UNUSED GENUINE COLLINS SM-2 DESK TOP
Ends in 13 Days 12 Hours 29 Minutes
Current price: $349.99 (0 bids)
SON COL-TRMSW 8PC SET GRAY CABINET TRIM MACHINE SC
SON COL-TRMSW 8PC SET GRAY CABINET TRIM MACHINE SC
Ends in 14 Days 10 Hours 47 Minutes 29 Seconds
Current price: $7.95 (62 bids)
Triple 40 250v Electrolytic Capacitor for Collins
Triple 40 250v Electrolytic Capacitor for Collins
Ends in 15 Days 4 Hours 9 Minutes 53 Seconds
Current price: $39.95 (0 bids)
 SWITCHCRAFT 0.206 0.21 INCH MICROPHONE JACK PJ-06
SWITCHCRAFT 0.206 0.21 INCH MICROPHONE JACK PJ-06
Ends in 17 Days 9 Hours 27 Minutes 27 Seconds
Current price: $17.00 (26 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 17 Days 23 Hours 2 Minutes 4 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 17 Days 23 Hours 2 Minutes 4 Seconds
Current price: $14.99 (0 bids)
EXCLUSIVE CUSTOM 13 PC. BRISTOL WRENCH MASTER SET
EXCLUSIVE CUSTOM 13 PC. BRISTOL WRENCH MASTER SET
Ends in 19 Days 53 Minutes 53 Seconds
Current price: $26.00 (125 bids)
LONG HANDLE BRISTOL WRENCH 4 COLLINS S-LINE KWM-2
LONG HANDLE BRISTOL WRENCH 4 COLLINS S-LINE KWM-2
Ends in 19 Days 1 Hours 9 Minutes 37 Seconds
Current price: $17.99 (1 bid)
LONG HANDLE BRISTOL WRENCH FOR COLLINS S-LINE KWM-
LONG HANDLE BRISTOL WRENCH FOR COLLINS S-LINE KWM-
Ends in 19 Days 1 Hours 9 Minutes 37 Seconds
Current price: $17.99 (1 bid)
TRADITIONAL COLLINS S-LINE 516F-2 11 PIN CONNECTOR
TRADITIONAL COLLINS S-LINE 516F-2 11 PIN CONNECTOR
Ends in 22 Days 12 Hours 44 Minutes 34 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 22 Days 12 Hours 46 Minutes 13 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 22 Days 12 Hours 46 Minutes 17 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 22 Days 12 Hours 46 Minutes 21 Seconds
Current price: $25.99 (48 bids)
Two .206 Microphone Connector For Collins S Line A
Two .206 Microphone Connector For Collins S Line A
Ends in 26 Days 21 Hours 47 Seconds
Current price: $14.95 (0 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 27 Days 11 Hours 59 Minutes 28 Seconds
Current price: $39.00 (0 bids)
 Exact match touch-up paint for Collins S Line Fro
Exact match touch-up paint for Collins S Line Fro
Ends in 28 Days 39 Minutes
Current price: $18.00 (0 bids)
Exact match touch-up TRIM RING grey paint for Coll
Exact match touch-up TRIM RING grey paint for Coll
Ends in 28 Days 39 Minutes
Current price: $10.00 (0 bids)
Pair Mallory SCA-2A mate for PJ068  phone jacks Co
Pair Mallory SCA-2A mate for PJ068 phone jacks Co
Ends in 28 Days 1 Hours 20 Minutes 32 Seconds
Current price: $14.95 (0 bids)
VFO 1000 COLLINS S-LINE FUNCTIONS AS VFO, CRYSTAL
VFO 1000 COLLINS S-LINE FUNCTIONS AS VFO, CRYSTAL
Ends in 28 Days 7 Hours 59 Minutes 58 Seconds
Current price: $300.00 (2 bids)
New 11 pin Octal Female Plug f/ Old Ham Radio Coll
New 11 pin Octal Female Plug f/ Old Ham Radio Coll
Ends in 28 Days 10 Hours 44 Minutes 33 Seconds
Current price: $10.00 (0 bids)
Collins S-Line 75S1, 75S2, 75S3 Filter wide AM (45
Collins S-Line 75S1, 75S2, 75S3 Filter wide AM (45
Ends in 29 Days 7 Hours 5 Seconds
Current price: $90.00 (1 bid)
EXCELLENT CONDITION COLLINS S-LINE 516F-2 POWER SU
EXCELLENT CONDITION COLLINS S-LINE 516F-2 POWER SU
Ends in 29 Days 12 Hours 29 Minutes 1 Seconds
Current price: $329.99 (0 bids)

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