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Re: [TenTec] Paragon logic board

To: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Subject: Re: [TenTec] Paragon logic board
From: Mike Bryce <prosolar@sssnet.com>
Reply-to: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Thu, 22 Aug 2013 18:14:56 -0400
List-post: <tentec@contesting.com">mailto:tentec@contesting.com>
I have new ones coming.  Ill wait till they show up as removal of the logic pcb 
is a kicker. 

While there is a 22 of cap and a resistor used in the oscillator I would 
suspect the rock before the ceramic cap failure. 

I have a CPU coming in, too

Mike wb8vge 

Sent from my iPhone

On Aug 22, 2013, at 5:57 PM, Stuart Rohre <rohre@arlut.utexas.edu> wrote:

> Mike, just be sure the substitute crystal is the type sold for computer 
> clocks, or another way of saying that is it has the same capacitance spec as 
> the original xtal.  It could be a failure of the crystal but most are pretty 
> rugged.
> Worth a try to just bridge another crystal of the same frequency in parallel 
> and see if any signs of life to the oscillator.  You could just tack solder 
> on the new crystal for this test.  You don't care if the oscillator is 
> slightly off, just that you get a signal out.
> 
> After all, the use of two parallel crystals was common for broadening a VXO a 
> few years back in QRP rigs.
> -Stuart Rohre
> K5KVH
> _______________________________________________
> 
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