On 12/9/2010 3:24 PM, David C. Hallam wrote:
> I have a JVC UX-D66 micro component audio system. Whenever I transmit,
> it turns on in the CD mode and the cover for the CD changer opens.
The most likely cause is a Pin 1 Problem in your audio system. One of
the cables connected to it is acting like a receiving antenna to excite
the Pin 1 Problem. The easiest fix is a common mode choke formed by
winding multiple turns of the problematic cable through a ferrite core.
Study http://audiosystemsgroup.com/RFI-Ham.pdf to understand the Pin 1
Problem, and use the graphs in Appendix One as a guideline for winding
the chokes. There's additional tutorial material at
73, Jim K9YC
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