Not so simple, at least you need change the TCXO to volt-controllable one.
By the way, I ordered my 0.5ppm TCXO on local market, 25USD, works great,
After that, K3 TX freqency err not over +-2HZ from 10C to 30C on 28MHz.
So I think K3 is good enough for normal use.
I have a GPS based 10MHz reference, but rare to use it.
73 de ba4rf/David
On Sat, May 16, 2009 at 11:31 AM, Mike Short <
[hidden email]> wrote:
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