Quartz Crystal For Am Broadcast Transmitter, 1420 Kc

US $280

  • New Berlin, Wisconsin, United States
  • Jan 29th
This is a quartz crystal in a vacuum sealed glass tube with an octal base, made by Northern Engineering laboratories of Burlington, WI. The glass is marked T-12A, 1420KC. I connected it to a Sencore FC51 frequency counter using jumper clips and a reading of 1.42024 MHz showed on the display, which indicates that the crystal will still resonate when connected to a suitable oscillator circuit and the resonant frequency is close to what is marked on the glass. Given the operating frequency and the type of enclosure the crystal is mounted in, it likely came out of an AM broadcast transmitter.

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