[TenTec] 229A SWR Circuit

[William Miner]

I agree with Stuart.  

Before doing anything else just change all of the diodes. They are cheap and 
avaiable. You won't damage any other parts  such as the meter trying to trouble 
shoot the circuit and it may just fix the problem!

GL
Bill - K6WLM




________________________________
From: Stuart Rohre <rohre at arlut.utexas.edu>
To: Rick W <ve7tk at yahoo.ca>; Discussion of Ten-Tec Equipment 
<tentec at contesting.com>
Sent: Sun, July 1, 2012 2:50:15 PM
Subject: Re: [TenTec] 229A SWR Circuit

Rick,
The most likely failures of any SWR measuring circuit are 1) short of 
open of diodes
2) changes in carbon resistor values
3) Someone messing with, or a bad calibration pot
4) Finally, capacitors even disk ceramics commonly found, can go bad if 
ever the unit took a current surge.

Check those in 1-4 order, and likely you will find something.

GL,
Stuart Rohre
K5KVH
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