On Wednesday, November 23, 2016 at 1:49:32 PM UTC+13, Ed Hollestelle wrote:
There must be lots of people out there that wired an AR 4201 successfully.
I just re-wired mine after purchasing the glider and it turns on and receives, but I cannot transmit.
Here are my pin connections:
1 and 14 SPKR
2 and 3 HEADSET (not yet checked)
5 to Red and 6 to blue DYN boom mike (with shield also to 6)
11 and 12 connected and Power POS
13 and 25 connected and GND
17 and 25 PTT
Ed.

Check that the radio is set up correctly for the type of microphone (electret or dynamic) - I have the AR3201 and had a similar problem - I think it is a jumper connection inside the case to convert between the two.