[Elecraft] 4 Mhz oscillator

[Mike McCoy]

>
> You cannot accurately measure the 4.000 MHz oscillator directly with a
> frequency counter. Most counters have a 1 meg ohm paralleled with about 50
> Pf on the input plus the added capacitance of the cable and you may have
> more than 100 pf in capacitance. This loading will upset the frequency of
> the oscillator.

Well there ya go (duh... no wonder it was off. ;)

>
> I prefer using spectrogram to align the 500 and 600 Hz audio tones
> broadcasted by WWV so they line up with a 500 and 600 marker on the
> spectrogram display.

I remember reading posts describing this method way long ago (and to make
sure you are using the proper alternating tone during alignment). Since I'm
having a very hard time receiving WWV on 20 Mhz can someone reiterate how to
use spectrogram with 'any' WWV using the 500/600 hz audio tones?

Thanks & 73,
Mike K5PU