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Frequency stability relationship to tuning

Maxejb
Maxejb Member
edited April 2020 in FLEX-6000 Signature Series
For the tech types? How does an oscillator TXCO drift of +/- 0.5ppm translate into a frequency output shift in hertz? Trying to decide how necessary the GPS option is....

Answers

  • Craig_KØCF
    Craig_KØCF Member ✭✭✭
    edited April 2020
    It's really not necessary unless you like to do Frequency Measuring Tests. There is an auto-calibrate routine in SmartSDR that in a few seconds adjusts to within a fraction of a hertz of WWV. I have found the stability of my 6500 to be excellent.

  • Maxejb
    Maxejb Member
    edited April 2020
    Thank you
  • Andrew Rodland
    Andrew Rodland Member ✭✭
    edited April 2020
    It translates to +/- 0.5 ppm — that is, 0.5 Hz per MHz. That's +/- 1Hz at 160m, +/- 5Hz at 30m, +/- 25Hz at 6m.
  • Maxejb
    Maxejb Member
    edited April 2020
    Thanks for the equation! 73 Mike

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