[TenTec] A Ten Tec 81597 board oddity...

[MadScientist]

I think I may have a board for you.

Send photo.

Gary

> On Dec 23, 2018, at 11:28 AM, Peter Bertini <radioconnection at gmail.com> wrote:
> 
> I just spend a day working on a replacement 81597 board for my Omni VI
> rigs... added the ten turn pots.
> 
> Odd thing is when I tried to align the board, obtaining the 400 Hz offset
> for CW was impossible. After pulling my hair for a few hours, I traced the
> runs and discovered there were no trimmer caps for CW offset on the 9 MHz
> LSB crystal!  The board is marked 81597 92842 REV A.  No way it could have
> ever worked in an Omni VI, even though it supposedly came from a scrapped
> unit.  It seems to follow the BFO scheme used in the earlier V models.
> Board can be modified by swapping the LSB and USB lines, and reversing the
> two crystals.  Weirdness never ceases.
> 
> Pete
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