I need a good radio shop

[JRitt]

I need a good radio shop in the Tennessee/Kentucky/Missouri area. My transponder sometimes does not transmit mode C and sometimes transmits the wrong squawk code (RT-359A). My VOR head that goes to my RT-328T nav com quit working (I'm thinking about changing it to an MX-300 nav/com). My other nav/com (MX-300) is good. The problems just started in the last 30days.

 

[kevin47881]

Joe, Cumberland Avionics at JWN does good work from what I hear on the field.
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[JRitt]

Great. It will be my first stop when the plane comes out from annual.

 

[Dean]

I have used the Radio Ranch in Rock Falls, IL with great results.