[Elecraft] No Receiver Mute with PTT

[Bud Morin]

Hi K3 Group,

After many months finally found time to set up my K3 with MH2 
microphone. Got it updated to version 3.11 and operating fine on cw. But 
SSB is no go. Using earphones it seems OK and had a QSO that way. Upon 
removing earphones to use the speaker, WOW, blasted out of room with 
audio squalling when press PTT. Same thing happens with earphones 
connected and hold mic next to earphones when use PTT; not loud though. 
Same thing with zero power or in TEST mode. Have tried various changes 
in configuration but no luck. Don't think the following is connected to 
this problem but have noticed that when turn rf gain down to zero the S 
meter moves all the way up to 80 over S 9 and have been told that on the 
air my voice sounds like too much base. If anyone knows the solution to 
the audio feedback, I would appreciate it if they inform me on what to 
do. Perhaps a another FW download is needed or perhaps a go at parameter 
initialization. Sure hope it is not a hardware.

Thanks for any help.

73,
Bud Morin, K9ZT