Re: TCXO - 0.5PPM

Posted by Don Wilhelm-4 on Dec 29, 2010; 6:52pm
URL: http://elecraft.85.s1.nabble.com/TCXO-0-5PPM-tp5872529p5875197.html

  Jim,

Since you say you have hearing loss, that can prove difficult - I would
suggest a "visual aid".

You might try using Spectrogram (or another FFT audio spectrum analyzer)
when attempting Method 2.
You should see the spike from the sidetone and the spike from the WWV
carrier on the display,
Once you get close to the correct point, you might be better able to
hear the wow-wow-wow - adjust the AF gain to bring the ampliude of both
signals nearly the same, and you should hear it.

Go for the hearing aids too - they will make life more pleasant and
enjoyable.  I hear if you served in any branch of the US military for
more than 6 months, you can get them free through the VA - worth
checking out.  I will be investigating that when I need new ones.

73,
Don W3FPR

On 12/29/2010 1:12 PM, radioshoppe wrote:

> Knut,
>
> Thank you for your suggestion.  As mentioned in my email about the best I
> can do with Method 2 is about +/20 hz.  I've tried it numerous times.  When
> adjusting the frequency I hear a dead spot 25-40+ hz wide that has no
> womp-womp-womp.  I take half of the width and set the frequency there.
> Spend 20+ years around aircraft and very noisy missile sources in the Air
> Force 30-50 years ago.  I had rather buy more radios/accessories than pay
> $6-10,000 for a set of hearing aides.
>
> Happy new year,  73
>
> Jim, W0EM
>

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