----- Original Message -----
From: Roger Borowski
To: TenTec@contesting.com
Sent: Saturday, September 24, 2005 2:39 PM
Subject: Fw: question re; Omni VI+ NB mod.
I sent this to the last address I had for Steve Ellington-N4LQ, but evidently
he has changed his e-mail routing. If anyone can help me with his current
e-mail address or an answer to my dilemma stated in the text below, I'd be
indebted.
Thanks and 73, -=Rog-K9RB=- K9RB@bellsouth.net
----- Original Message -----
From: Roger Borowski
To: N4LQ@iglou.com
Sent: Saturday, September 24, 2005 2:31 PM
Subject: question re; Omni VI+ NB mod.
Hi Steve,
I was inside my Omni VI Plus model 564 installing the INRAD roofing filter kit
and thought I'd do your published NB mod while I was in there also. I may have
cheated a bit by tacking 33K resistors across the two existing 33K resistors
which wound up measuring 16.4K each once soldered in place rather than the
desired 16K even. I didn't think this would make much of a difference due to
tolerance variations and the major change from 33K to 16K and I was pretty
close. I trust you'll agree and I didn't have to pull the board either to
accomplish this.
Anyways, to get to the point. I tried to do the calibration/alignment and in
everything I've tried, I can't seem to determine any difference or null, you
say sharp null, but I see nothing when rocking both coils from each extreme.
Maybe I'm not understanding the procedure but I've tried with the LP on along
with the NB, without the LP and just the NB, different bands, modes, etc. Now I
have no idea where the coils should be adjusted and hope you can set me
straight as to what I may be doing wrong. I have another rig to provide a
signal as well as a high impedance voltmeter. The voltage varies with the
position of the NB pot but not even a hundredth of a volt when adjusting the
coils.
Any help or suggestions you might provide will certainly be greatly appreciated
and I may likely even get some sleep tonight! Thanking you in advance, 73,
I remain, -=Roger Borowski - K9RB=- Orange Park, FL. Hamming for 45 years!
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