1. Forum
  2. USENET
  3. alt.ham-radio.hf

  • calibration of frequency counter to WWV?

    From Jonn Dobson@jdobsn@email.net to alt.ham-radio.hf on Tue Oct 16 12:10:37 2007
    From Newsgroup: alt.ham-radio.hf

    I have a Radio Shack 22-306 frequency counter and I would like to calibrate it. It has a 4 Mhz timebase, so I can hear the harmonics at 20 Mhz WWV frequency. Would I be able to adjust the calibration to zero beat with WWV and would this be accurate?

    Thanks,
    JD


    --- Synchronet 3.21b-Linux NewsLink 1.2
  • From lgadbois@lgadbois@verizon.net to alt.ham-radio.hf on Tue Oct 16 18:58:15 2007
    From Newsgroup: alt.ham-radio.hf

    You will be able to get within about 100Hz by zero beating the counter
    timebase generator against WWV. Depending on the quality of the crystal/oscillator circuit, the drift on the frequency counter may be
    greater than 100Hz.

    Precision frequency counters use temperature stabilized timebase oscillators
    to achieve better accuracy. A Radio Shack counter is not adequate for doing commercial or broadcast frequency certification.

    "Jonn Dobson" <jdobsn@email.net> wrote in message news:1T1Ri.4689$0k2.3309@trnddc05...
    I have a Radio Shack 22-306 frequency counter and I would like to calibrate >it. It has a 4 Mhz timebase, so I can hear the harmonics at 20 Mhz WWV >frequency. Would I be able to adjust the calibration to zero beat with WWV >and would this be accurate?

    Thanks,
    JD





    --- Synchronet 3.21b-Linux NewsLink 1.2