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Amphenol 80-MC2M 2 Pin Offset Microphone Connector for Collins, EF Johnson, Heathkit, Hallicrafters, and Browning  New Made in USA

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MPN:
80-MC2M
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  • Amphenol 80-MC2M 2 Pin Offset Microphone Connector for Collins, EF Johnson, Heathkit, Hallicrafters, and Browning  New Made in USA
  • Amphenol 80-MC2M 2 Pin Offset Microphone Connector for Collins, EF Johnson, Heathkit, Hallicrafters, and Browning  New Made in USA
  • Amphenol 80-MC2M 2 Pin Offset Microphone Connector for Collins, EF Johnson, Heathkit, Hallicrafters, and Browning  New Made in USA
$38.99
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Description

Amphenol 80-MC2M 2 Pin Offset Microphone Connector for Collins, EF Johnson, Heathkit, Hallicrafters, and Browning  New Made in USA

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This connector was standard on many vintage ham radio transceivers and transmitters, including:
  • Collins (e.g., 32V-1, 32V-2, 32V-3, some KWM-series mics).
  • Heathkit (e.g., SB-101, HW-101, DX-100, many others).
  • E.F. Johnson (Viking series).
  • Browning (Mark III, Golden Eagle Mark II).
  • Hallicrafters (e.g., HT-32 transmitter mic input).
  • Some CB radios, early aviation mics, PA systems, and test equipment (e.g., Keithley instruments).
The offset pins provided reliable keyed mating in an era before standardized multi-pin connectors like XLR or 4/5/8-pin DIN became dominant.
 
Most of the connectors I have in stock are not in the original package as shown in my pictures, but they are original Vintage Amphenol, and unused, Made in the USA. They have never been soldered or installed.
 
The Amphenol 80-MC2M (also written as 80MC2M or 80-MC2M) is a classic vintage 2-pin offset (non-in-line) male microphone connector from the Amphenol 80 series. This series was widely used from the 1930s through the 1980s (and into later production under WPI/CDM after Amphenol sold the line in the early 1980s) for audio, public address, ham radio, CB, aviation, and broadcast equipment.Key Specifications and Features
  • Type: Male cable-mount (inline) plug.
  • Contacts: 2 pins/contacts — offset (one centered, the other offset from the axis for polarization/keying to prevent incorrect insertion; not in a straight line like many modern connectors).
  • Coupling: Threaded locking — external 5/8-27 threads on the plug body (screws securely into the mating female receptacle's internal threads).
  • Shell: Chrome-plated machined brass for durability and shielding.
  • Dielectric/Insulator: Black phenolic (high-temperature resistant).
  • Strain relief: Most versions do not include a built-in coiled spring strain relief (unlike the 75-series single-pin connectors); the cable is typically secured via solder terminals and a clamp or back shell. Some variants or aftermarket setups add one.
  • Cable compatibility: Designed for shielded microphone cable (typically up to ~0.25–0.41" diameter depending on exact variant).
  • Mounting/Use: Cable-end plug (solder or crimp terminals); mates to female side on equipment chassis or mic body.
  • Voltage/Current: Rated for low-voltage audio/microphone signals (typically up to ~200V test in older catalogs; not high-power).
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