| To: | Rick W <ve7tk@yahoo.ca>, Discussion of Ten-Tec Equipment <tentec@contesting.com> |
|---|---|
| Subject: | Re: [TenTec] 229A SWR Circuit |
| From: | Stuart Rohre <rohre@arlut.utexas.edu> |
| Reply-to: | Discussion of Ten-Tec Equipment <tentec@contesting.com> |
| Date: | Sun, 01 Jul 2012 17:49:57 -0500 |
| List-post: | <mailto:tentec@contesting.com> |
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 pot4) 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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