Is there a way to put a TCXO in the Paragon? Maybe it was available in
the commercial version?
73,
Bob WB2VUF
Paul Christensen wrote:
>> Interestingly, if I remember correctly, Scott described at one time on the
>> reflector that the TCXO did not have better stability than the earlier
>> crystal oven. They moved to the TCXO because the ovens were becoming
>> unavailable.
>
> Sounds right to me. However, I made the change primarily to have better
> start-up stability without having to leave the power supply running 24/7.
>>From a cold start, the OCXO's frequency makes a relatively large excursion
> until it comes up to temperature. That said, I found Ten Tec's TCXO to be
> significantly more stable than the OCXO ever was. After the mod, I don't
> believe I saw more than a 20 Hz change in frequency at 14 MHz -- even from a
> cold start.
>
> If Ten Tec no longer carriers that particular TCXO, many inexpensive
> replacements are available with 0.5 ppm accuracy or better. The difference
> in price is generally a function of the TCXO's phase noise spec and absolute
> stability required.
>
> Paul, W9AC
>
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