[aprssig] Mic muting

[Scott Miller]

> though.  Usually my idea of popping is something irritating, this 
> just sounds like it breaks between nothing and the faint white noise, 
> there's no 'pop'.

Mine definitely pops.  I've got another on the way - I'll see if it does the
same thing.

> I have an original 135TP, not a MK series.

What's on the name plate?  Mine has an FCC ID of PH3DR-135TMK2, and says
MkII after the serial number.

Scott
N1VG