[aprssig] Mic-E and HTs
Robert Bruninga
bruninga at usna.edu
Tue Dec 13 15:59:51 EST 2005
>>> wa8lmf2 at aol.com 12/13/05 1:37 PM >>>
>bruninga at usna.edu wrote:
>>Ill draw it...
>
>I don't see how the second half of your diagram
>(the part labled "Combined PTT" could possibly work.
> You show one side of the mic element grounded all
>the time with PTT button then grounding the other
>side, thereby shorting out the audio.
Argh, your right. I was too quick to draw that.
I fixed it now with the typical 2.2k resistor...
http://www.ew.usna.edu/~bruninga/mic-ePTT.GIF
sorry,
Bob
Stephen H. Smith wa8lmf (at) aol.com
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