[ICOM] Bad TX audio on 775

[Bob Kulow]

><snip>

>Compandering is a completely different ball game. To use 
>compandering, the 'normal' 300 to 3000 Hz audio frequencies are 
>'converted' to different frequencies and then transmitted (over a 
>narrower bandwidth channel). At the other end, the received signal 
>is un-compandered and converted back to it's original 300 to 3KHz 
>communications quality audio. For instance.........

This may be a new form of compandering, but the "classic" definition 
of compandering is compression at the transmitting end followed by 
complementary expansion at the receiving end to restore the dynamic 
range that was lost in compression (Compander: COMPressor AND 
exPANDER).  This was used in many of the Bell System analog carrier 
systems to improve SNR.

73
Bob WA2UEH