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Garmin SL40/GMA 340 - how to control mic volume when TX

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gerf(at)gerf.com
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Posted: Wed Sep 20, 2006 9:39 am Post subject: Garmin SL40/GMA 340 - how to control mic volume when TX

I have a Garmin SL40 COM and a GM340 audio panel installed in 

my RV-9.  Got all the wiring finished this past weekend and 

wheeled her out onto the ramp for a radio check.



When I keyed the Mic (actually I grounded the PTT wire - no 

stick installed yet) and called out to my local airport's 

pattern for a radio check, the sound of my own voice in the 

headset was deafening.  Folks in the pattern called out "loud 

and clear" so I'm not worried about the functioning of the 

radio per se.  All other volumes in the headset - 

intercom/chatter on the frequency - are just fine - its only 

when I TX that I get deafened.



Is there an adjustment somewhere, or have I goofed up my wiring 

somewhere ?



__g__



========================================================== 

Gerry Filby                                  gerf(at)gerf.com

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