@Jurgen975, just because the military U238 connector is physically on the radio, does not mean that it is either wired correctly, or the circuitry is correct.
@Yannos, What EagleDriver is trying to say is that a microphone amplifier is most likely needed. This would be included into the PTT's circuit board. I agree with him that switching the microphone probably will not work. I don't 100% know this, it's just an educated guess...
Here is a link to a thread that sort of discuss's this subject...
http://gearsoc.com/board/viewtopic.p...ood+ptt#p24088