[CQ-Contest] Voice Keyer

Tom Rauch W8JI at contesting.com
Wed Jan 9 19:23:08 EST 2002


> together at connector J5) to chassis ground.  This choke (in series
> with ground) would isolate the PCB and make for *worse* RF
> characteristics, I would expect.

I wouldn't. 

But all that aside,  I just wanted to clarify the redesigned unit has 
isolated audio grounds, and an isolation transformer. I think I 
caught all of the problems in the rework, including "voltage on the 
microphone" issues.

If there are any problems with the unit I'm responsible for, I'd 
appreciate knowing what I missed. I certainly am well aware of the 
design flaws in the original VK unit.
73, Tom W8JI
W8JI at contesting.com 


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