[NLRS] help!!!! TR-9130 microphone

[John Hoaglun]

I am testing out my TR-9130 so that I can replace my TR-751 which currently
is a little hearing impaired. 
 
The TR-9130 has a 6 pin microphone connector and the TR-751 has an 8 pin
connector. I bought an adapter to bridge that gap. The PTT is working but I
am not getting any mic audio. I checked the pin out and it appears to be
correct and pass the test with my VOM. I get FM carrier and CW but no mic
audio. I tried using 2 different Kenwood 8 pin mics that work.
 
Is there some magic to the mic that I am missing?
 
The 6 pin side is Mic, PTT, and GND
The 8 pin side is Mic, Mic-GND, PTT, PTT-GND
 
Mic-GND and PTT-GND share a common connection to GND.
 
I was hoping to use the TR-9130 for this weekend's contest but that is not
looking too promising right now unless I want to make 902/1296 CW only. If I
am going to use the TR-9130 I will need to adjust the drive levels in the
transverters because the 9130 is a lower output than the 9310. It is not a
big tune-up but it does take a little bit off time.
 
The sensitivity of the 9130 is much better than my current IF rig so I
really would like to make the swap if I can figure out this mic audio issue.
 
I am looking from some guidance from the group that might be familiar with
my issue.
 
Thanks, JH
-----------------------------
John Hoaglun
NG0R - EN25
http://www.hoaglun.com