Thanks RFguy ,
ok the answers as best as I can think of;
1) no ,it’s not a whine noise at all.
2)Yes, it increases with rpm.
3) transmitted audio: I am told by other pilots when requesting a radio check that it’s a 4.
4) Battery is new.
5) I think the voltage at idle is about 14 volts, not sure at full song, will have to check.
6) No, noise is only on transmissions (When ptt activated)
7) Yes it occurs with a DC 13.4
8)No, recd audio is good.