Posted by
James Maynard-2 on
Apr 06, 2011; 7:22pm
URL: http://elecraft.85.s1.nabble.com/K3EXREF-and-Trimble-Thunderbolts-tp6242158p6247286.html
On 4/6/2011 5:47 AM, Dave wrote:
[in an e-mail with subject "Re: [Elecraft] (no subject)]
> Having done some long term measurements on my k3extref using an HP mHz
> resolution counter i have seen no corrections during transmit. Once the k3
> has "warmed up" (first thing in the morning it would take 10 minutes for the
> original tcxo to stabilise enough for jt65/wspr/qrss(5Hz fsk)) I see very
> few corrections being made on receive either.
>
> All I need now is the release of the internal 144 xverter and I am good,
> frequency stability wise thro 76GHz
>
> Dave
>
> ww2r
>
So, Dave, how did you manage to get a K3EXTREF? I would like to install
one in my new K3, but as far as I can tell, it is not yet being offered
for sale.
I have long had an interest in the precise measurement of time and
frequency, and have several 10 MHz reference oscillators. (The only
time that I participated in the ARRL FMT, I was limited by ionospheric
doppler, making a better measurement on the West Coast station than from
W1AW on the east coast.)
73, Jim K7KK
Saint Helens, Oregon, USA
"Remember, Ignorance is the Mother of Adventure!" -- Hagar the Horrible
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