Amphenol 75-MC1F Female Vintage Single Conductor Microphone Connector New Made in USA #1

Amphenol 75-MC1F Female Vintage Single Conductor Microphone Connector New Made in USA #1

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• Vintage Microphones It Fits (Common Examples)These mics have a 5/8-27 threaded male stud on the base/bottom for the cable to screw on:

  • Astatic JT-30 ("bullet" or "harp" crystal mic) — extremely common; frequently listed with the 75-MC1F or right-angle 75-MC1F-A
  • Turner series: 211, 22, 33, +3D, +2D, and similar high-Z models
  • Electro-Voice early models: 605, 611, 638, 911, and others
  • Shure vintage high-Z models: 533SA, 520DX (early versions), and similar crystal/ceramic mics
  • Various other American-made crystal/ceramic/dynamic mics from the 1940s–1970s (e.g., early RCA, University, and PA/broadcast types)

  It was the de facto standard for many "screw-on" high-impedance mics used in ham radio, public address, harmonica/bullet mic setups (blues/harp players), and early recording/PA.Vintage Radios/Transceivers It Fits (Microphone Input Side)The radio's mic jack is usually the panel-mount male threaded receptacle (75-PC1M equivalent), so the 75-MC1F cable plugs directly in:

  • Heathkit — Very common (e.g., DX-100, SB-100/SB-101/SB-102, HW-101, Apache, Mohawk, and many other tube-era transmitters/transceivers)
  • Hallicrafters — e.g., HT-32 transmitter
  • Eico — Many models with single-pin mic inputs
  • E.F. Johnson (Viking series transmitters)
  • Collins — Some early models/transmitters (e.g., 32V series variants)
  • Other ham/PA gear: Browning (e.g., Golden Eagle), early CB radios with high-Z mic inputs, and various test equipment or vintage PA amps

  This connector was popular in ham radio circles because high-impedance crystal mics were standard before low-Z dynamic mics and multi-pin connectors became common in the 1970s–1980s.
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