I imagine there is a way to use an external GPS referenced10 MHz oscillator
to stabilize a 44.45 MHz Master Oscillator, but I'll bet it would be
expensive! The 10 MHz GPS stabilized part is a no-brainer and the parts are
cheap and available. It's the rest that's a challenge.
The OCXO units I found at
http://www.ecliptek.com/oscillators/EB71F51/#freqstab have stabilities in
the .1 ppm range. Not GPS standard, but pretty good!
Ron N6IE
www.N6IE.com
(Formerly N6AHA)
----- Original Message -----
From: "Grant Youngman" <nq5t@tx.rr.com>
To: "'Discussion of Ten-Tec Equipment'" <tentec@contesting.com>
Sent: Monday, January 29, 2007 10:49 PM
Subject: Re: [TenTec] Orion/O2 Drift Problem-who is interested in a fix?
>> often hear Orions on the air, especially on the TT Sunday
>> net, and very often they are 20 Hz low in frequency. The fan
>> mod on my website mitigates the problem to some degree, but
>> it's only a band-aid.
>
> Maybe they're just low because the operators actually believe the 16
> digits
> of precision they get from their calculators when they divide 1.2 by the
> sgrt of 47, and likewise believe the digital dial on their radios is
> perfectly accurate to the Hz ???
>
> Or maybe -- they just don't know how to tune to a net. How did ham radio
> ever survive in the days of the Handbook VFO :-)
>
> Actually, if T-T released an option to lock the Orions to a GPS-stabilized
> 10Mhz reference, I'd be the first one in line to buy one. But just
> because
> someone is using an OCXO doesn't mean they won't still be 20 Hz off --
> fixed, stable and permanent :-)
>
> Grant/NQ5T
>
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>
>
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