[Elecraft] Re: K3 question--TCXO or another filter?

[michael taylor]

On Tue, Aug 5, 2008 at 1:44 AM, Dave G4AON <elecraft at astromag.co.uk> wrote:
> The difference between TCXOs is 4ppm not 4 Hz. The standard TCXO can be +/-
> 250 Hz at 50 MHz, the optional one can be +/- 50 Hz at 50 MHz or perhaps +/-
> 25 Hz once the firmware is changed to allow the supplied calibration table
> to be used. Using the optional 1ppm TCXO in my K3 results in a typical

Thank you Dave (and others who corrected me in private), you are
correct I did make a mistake, the 5ppm / 1ppm ( 5E-6 / 1E-6) is
relative to the oscillator's frequency, 49.380 MHz, so the actual
expected frequency error (tolerance / stability) is as Dave gave
above.

-Michael, VE3TIX