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[TenTec] Omni VI opt 3.... PLL warbler

To: Ten-Tec List <tentec@contesting.com>
Subject: [TenTec] Omni VI opt 3.... PLL warbler
From: Jim Goudie <jagoudie@comcast.net>
Reply-to: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Wed, 26 Jan 2022 18:08:50 -0500
List-post: <mailto:tentec@contesting.com>
Hello,

I have an option 3 Omni VI that has developed a gargley warbley wobbly 
intermittent sound heard on Tx and RX, and I also hear it on the 5-5.5mhz PLL 
signal.  At times, that ‘noise’ seems to be affected by mechanical bumps and 
repositioning the chassis.   So, I opened things up…. “exercised connectors,” 
cleaned up and re-soldered areas on the PLL board that looked suspicious, and 
didn’t find much else.  Before going deeper, I decided to put it back together 
and see if my initial work had solved the problem.

I was very encouraged for a while.  I was even tweaking the alignment before 
planning to put it back in the case.   But then…. it warbled again.  It seems 
to be making the noise less often so far, but ...

Any advice/experience with what might be wrong or how to proceed?  There’s no 
direct access to the 5 mhz PLL board during normal operation…  So… I’m open to 
suggestions…

Thanks,
Jim  AF3Z

Jim Goudie   —  jagoudie@comcast.net
610 Kraybill Church Rd
Mount Joy, PA 17552

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