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!

COLLINS S-LINE 30L-1 TUNED INPUT COUPLING ARM
COLLINS S-LINE 30L-1 TUNED INPUT COUPLING ARM
Ends in 1 Hours 46 Minutes 40 Seconds
Current price: $25.00 (0 bids)
COLLINS S-LINE 30L-1 EMBLEM
COLLINS S-LINE 30L-1 EMBLEM
Ends in 1 Hours 55 Minutes 45 Seconds
Current price: $30.00 (0 bids)
Vintage 1971 COLLINS S/LINE Receiver Ham Radio Pri
Vintage 1971 COLLINS S/LINE Receiver Ham Radio Pri
Ends in 22 Hours 47 Minutes 33 Seconds
Current price: $6.97 (0 bids)
COLLINS S-LINE PARTS: FIDUCIAL CALIBRATOR DRIVE SH
COLLINS S-LINE PARTS: FIDUCIAL CALIBRATOR DRIVE SH
Ends in 1 Days 1 Hours 12 Minutes 15 Seconds
Current price: $13.50 (0 bids)
Waters 372 Clipreamp for Collins S-Line Ham  *Work
Waters 372 Clipreamp for Collins S-Line Ham *Work
Ends in 1 Days 3 Hours 39 Minutes 57 Seconds
Current price: $59.00 (0 bids)
HAM RADIO STATION AC POWER START, STOP & AUTO
HAM RADIO STATION AC POWER START, STOP & AUTO
Ends in 1 Days 3 Hours 51 Minutes 28 Seconds
Current price: $155.00 (0 bids)
COLLINS S-Line PARTS: PI WOUND CHOKE COIL 32S-1 32
COLLINS S-Line PARTS: PI WOUND CHOKE COIL 32S-1 32
Ends in 1 Days 9 Hours 24 Minutes 18 Seconds
Current price: $22.50 (0 bids)
SOUTHCO 82-11 1/4 TURN CABINET SCREWS FOR COLLINS
SOUTHCO 82-11 1/4 TURN CABINET SCREWS FOR COLLINS
Ends in 2 Days 3 Hours 50 Minutes 54 Seconds
Current price: $10.95 (13 bids)
SOUTHCO 82-11-32 1/4 TURN CABINET SCREWS & REC
SOUTHCO 82-11-32 1/4 TURN CABINET SCREWS & REC
Ends in 2 Days 4 Hours 51 Seconds
Current price: $14.95 (46 bids)
Collins S Line Dial Escutcheon Not Marked Unmarked
Collins S Line Dial Escutcheon Not Marked Unmarked
Ends in 3 Days 26 Minutes 46 Seconds
Current price: $49.99 (0 bids)
Original Collins S Line Amateur Radio Station Log
Original Collins S Line Amateur Radio Station Log
Ends in 3 Days 3 Hours 27 Minutes 43 Seconds
Current price: $30.00 (0 bids)
TRADITIONAL COLLINS S-LINE 516F-2 11 PIN CONNECTOR
TRADITIONAL COLLINS S-LINE 516F-2 11 PIN CONNECTOR
Ends in 3 Days 8 Hours 37 Minutes 35 Seconds
Current price: $32.99 (33 bids)
TRADITIONAL COLLINS S-LINE 75S RCVR 11 PIN CONNECT
TRADITIONAL COLLINS S-LINE 75S RCVR 11 PIN CONNECT
Ends in 3 Days 8 Hours 39 Minutes 14 Seconds
Current price: $29.99 (30 bids)
TRADITIONAL COLLINS S-LINE EQUIPMENT 11 PIN CONNEC
TRADITIONAL COLLINS S-LINE EQUIPMENT 11 PIN CONNEC
Ends in 3 Days 8 Hours 39 Minutes 18 Seconds
Current price: $29.99 (21 bids)
NEW STYLE 11 PIN CONNECTORS FOR COLLINS S-LINE 32S
NEW STYLE 11 PIN CONNECTORS FOR COLLINS S-LINE 32S
Ends in 3 Days 8 Hours 39 Minutes 22 Seconds
Current price: $25.99 (56 bids)
BEAUTIFULLY CONSTRUCTED 3.5-30 MHz ANTENNA TUNER T
BEAUTIFULLY CONSTRUCTED 3.5-30 MHz ANTENNA TUNER T
Ends in 4 Days 8 Hours 21 Minutes 41 Seconds
Current price: $299.99 (0 bids)
Collins S-Line Weighted PTO Knob Insert for PTO Kn
Collins S-Line Weighted PTO Knob Insert for PTO Kn
Ends in 5 Days 5 Hours 26 Minutes 28 Seconds
Current price: $29.99 (47 bids)
ORIGINAL COLLINS S-LINE 30L-1 PARTS: HIGH VOLTAGE
ORIGINAL COLLINS S-LINE 30L-1 PARTS: HIGH VOLTAGE
Ends in 5 Days 23 Hours 3 Minutes 29 Seconds
Current price: $85.00 (0 bids)
NEW STYLE 11 PIN CONNECTORS FOR COLLINS S-LINE SUP
NEW STYLE 11 PIN CONNECTORS FOR COLLINS S-LINE SUP
Ends in 6 Days 7 Hours 36 Minutes 16 Seconds
Current price: $25.99 (9 bids)
COLLINS S-Line PARTS: DIAL LAMP PILOT LIGHT 75S-1
COLLINS S-Line PARTS: DIAL LAMP PILOT LIGHT 75S-1
Ends in 7 Days 1 Hours 36 Minutes 35 Seconds
Current price: $17.99 (0 bids)
COLLINS S-Line PARTS: AF GAIN POT 75S-1 75S-2
COLLINS S-Line PARTS: AF GAIN POT 75S-1 75S-2
Ends in 7 Days 1 Hours 42 Minutes 22 Seconds
Current price: $31.50 (0 bids)
COLLINS S-Line PARTS: DIODE SOCKET MOUNT 32S-3 75S
COLLINS S-Line PARTS: DIODE SOCKET MOUNT 32S-3 75S
Ends in 7 Days 1 Hours 43 Minutes 5 Seconds
Current price: $13.50 (0 bids)
COLLINS S-Line PARTS: INSULATED BANDSWITCH SHAFT 7
COLLINS S-Line PARTS: INSULATED BANDSWITCH SHAFT 7
Ends in 7 Days 1 Hours 44 Minutes 55 Seconds
Current price: $18.00 (0 bids)
COLLINS S-Line PARTS: 2.1Khz SSB MECHANICAL FILTER
COLLINS S-Line PARTS: 2.1Khz SSB MECHANICAL FILTER
Ends in 7 Days 1 Hours 46 Minutes 7 Seconds
Current price: $80.10 (0 bids)
COLLINS S-Line PARTS: METER PILOT LAMP 75S-1 32S-1
COLLINS S-Line PARTS: METER PILOT LAMP 75S-1 32S-1
Ends in 7 Days 1 Hours 46 Minutes 31 Seconds
Current price: $18.00 (0 bids)
COLLINS S-Line PARTS: OEM TUBE HEAT SHIELDS 32S-1
COLLINS S-Line PARTS: OEM TUBE HEAT SHIELDS 32S-1
Ends in 7 Days 1 Hours 49 Minutes 10 Seconds
Current price: $22.50 (0 bids)
COLLINS S-LINE 30L-1 FRONT PANEL ESCUTCHEON (LINEA
COLLINS S-LINE 30L-1 FRONT PANEL ESCUTCHEON (LINEA
Ends in 7 Days 2 Hours 3 Minutes 56 Seconds
Current price: $14.40 (0 bids)
COLLINS S-LINE PARTS: 15.355Mhz (11 METER BAND ??)
COLLINS S-LINE PARTS: 15.355Mhz (11 METER BAND ??)
Ends in 7 Days 2 Hours 41 Minutes 45 Seconds
Current price: $22.50 (0 bids)
Original NOS Collins S-line KWM-2A 453.65KHz BFO Q
Original NOS Collins S-line KWM-2A 453.65KHz BFO Q
Ends in 7 Days 5 Hours 22 Minutes 45 Seconds
Current price: $87.00 (0 bids)
Original NOS Collins S-line KWM-2A 456.35KHz BFO Q
Original NOS Collins S-line KWM-2A 456.35KHz BFO Q
Ends in 7 Days 5 Hours 25 Minutes 30 Seconds
Current price: $87.00 (0 bids)
COLLINS S-LINE PARTS: SELENIUM RECTIFIER DIODE
COLLINS S-LINE PARTS: SELENIUM RECTIFIER DIODE
Ends in 7 Days 8 Hours 2 Minutes 38 Seconds
Current price: $22.50 (0 bids)
QST Ham Radio Magazine Print AD COLLINS S/Line fro
QST Ham Radio Magazine Print AD COLLINS S/Line fro
Ends in 7 Days 16 Hours 32 Minutes 49 Seconds
Current price: $9.95 (0 bids)
QST Ham Radio Magazine Print Ad for Electronic Who
QST Ham Radio Magazine Print Ad for Electronic Who
Ends in 7 Days 17 Hours 23 Minutes 12 Seconds
Current price: $9.95 (0 bids)
QST Ham Radio Magazine Print Ad Henry Radio Stores
QST Ham Radio Magazine Print Ad Henry Radio Stores
Ends in 7 Days 17 Hours 38 Minutes 16 Seconds
Current price: $9.95 (0 bids)
COLLINS S-LINE 30L-1 STAINLESS SCREWS FOR RF SAFET
COLLINS S-LINE 30L-1 STAINLESS SCREWS FOR RF SAFET
Ends in 8 Days 25 Minutes 41 Seconds
Current price: $25.00 (0 bids)
COLLINS S-LINE 30L-1 PARTS: SMALL POINTER KNOB (SE
COLLINS S-LINE 30L-1 PARTS: SMALL POINTER KNOB (SE
Ends in 8 Days 52 Minutes 11 Seconds
Current price: $29.99 (0 bids)
COLLINS S-Line PARTS: PLATE TUNE/LOAD POINTER KNOB
COLLINS S-Line PARTS: PLATE TUNE/LOAD POINTER KNOB
Ends in 8 Days 55 Minutes 11 Seconds
Current price: $29.99 (0 bids)
COLLINS S-Line PARTS: LOAD TUNE/PLATE POINTER KNOB
COLLINS S-Line PARTS: LOAD TUNE/PLATE POINTER KNOB
Ends in 8 Days 56 Minutes 7 Seconds
Current price: $29.99 (0 bids)
COLLINS S-LINE RISER FEET AND HARDWARE 30L-1 (KWM-
COLLINS S-LINE RISER FEET AND HARDWARE 30L-1 (KWM-
Ends in 8 Days 58 Minutes 24 Seconds
Current price: $60.00 (0 bids)
COLLINS S-LINE 32S-1 PARTS: SERIAL NUMBER TAG
COLLINS S-LINE 32S-1 PARTS: SERIAL NUMBER TAG
Ends in 8 Days 1 Hours 42 Minutes 6 Seconds
Current price: $18.00 (0 bids)

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