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  #11  
Old 04-18-2010, 05:43 PM
jimski9's Avatar
jimski9 jimski9 is offline
 
Join Date: Apr 2006
Location: Tauranga, New Zealand
Posts: 27
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I have the same problem with background noise on transmission with the Icom A200.
I need to turn down the mic gain and sidetone.
Can anyone recall how many turns on the trimpots were necessary to get to the right levels? - a ballpark figure would help to minimise the number of times I will need to remove the radio, adjust the settings and flight test the result.

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Jim Talbot
New Zealand
RV7A ZK-JLT - first flight 5 days ago!
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  #12  
Old 04-18-2010, 06:00 PM
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sprucemoose sprucemoose is offline
 
Join Date: Jan 2005
Location: MKE
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It's not a matter of turns, but fractions of a turn. A little bit goes a long way. I don't recall how much, but something like 1/4 turn sticks in my mind. It is definitely a trial and error process. You can do it in flight, but pick a smooth day.

Adjust the mic gain first, so that ATC hears you well. Adjust the sidetone second so that the noise in your ears is just enough.
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Milwaukee
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