Sean McCarthy wrote:
>
> Hello,
>
> Anyone have any experience aligning frequency on the Omni V/VI?
> Looking for tips.
>
> Thanks,
> Sean
Hi Sean: Both are very straight forward, although the OMNI-V was
a real pain, because the hetrodyne crystal oscillator board was
a nuiscance to reach, and required regular adjustment. A freq counter
is required on both radios, and just set all oscillators per the
manual.
The six is much easier, because the band oscillators are phase-locked to
the master clock and don't require adjustment often.
The adjustment on the Six requires, setting the USB-LSB-FSK oscillator
with a counter, then the cw offset with a counter. (I have yet to find
one that would allow pulling the crystal as far as the manual says)
Ater setting those, dial up WWV at 10 mHz. You'll find the master
clock on the microprocessor board in an oven. By carfully adjusting
the input strength of WWV/10 mHz, you can zero-beat that oscillator
directly against the primary standard. Once done, it stays for a long
time! That's it.
I haven't looked at what the hetrodyne crystal oscillator board
requires, if it ever does. Probably removal of the phase lock voltage
input and then set the oscillators on the proper frequency. But - it
may never need adjustment if the drift never goes outside of the
loops ability to bring it back.
73 de KL7HF
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