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[TenTec] Omni V PBT adjustment

To: <tentec@contesting.com>
Subject: [TenTec] Omni V PBT adjustment
From: SteveBaron@starlinx.com (Steve Baron)
Date: Tue, 31 Aug 1999 02:12:03 +0100
Went thru that myself about six months ago.  It was quite noticeable with
the 250 Hz filter.

Your guess is exactly what I guessed and sort of strongly implied by TT docs
maybe markings on the case, etc.  HOWEVER, TT says that the C is used to set
the frequency at the 12 o'clock position i.e. don't touch the R.

I am glad I set mine because I discovered that that C was a bit flakey and a
quick spray of DeOxit cleared it up.

Within 4 months or so, the frequency drifted again so that it is again
noticeable with 250 Hz filter.

-----Original Message-----
From: George Maier <gmaier@ultranet.com>
To: tentec@contesting.com <tentec@contesting.com>
To: <tentec@contesting.com>
Date: Tuesday, August 31, 1999 3:05 AM
Subject: [TenTec] Omni V PBT adjustment

>Fellow Ten Tecnocrats:
>Apologies if this is a repeat message; had some reflector access
>probelms which were cleared up thanks to
>the able help of Jim, AD6CW, the list admin.
>The PBT in my Omni V seems to be mis-aligned (not centered).  Otherwise,
>the rig is
>so good that I've ignored the PBT issue, because it's a low level
>problem.  Now it's time to get it right, however.
>The manual shows two adjustments on the PBT board, but gives no detail
>how to approach an alignment.  I'm guessing that C22 is there to get the
>xtal dead on freuency, while R18 is used to set the PBT to center when
>knob out front is centered.  I'm also guessing that the carrier
>oscillators should be set up first. Can anyone tell me if this is
>correct ?
>Had to sign off the reflector for a while due to personal issues, but
>it's great to back where people still sell, swap, buy, and talk
>technical more often than not.
>Thanks for bandwidth..
>George Maier - K1GXT
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