Most radio transmissions at VOIP feed point end
up with varied audio level. Feeding this unregulated, raw audio to
Echolink/VOIP servers may result in a “hard to hear” signals at
the other end.
This small, 2 IC board is
designed specially to overcome this problem by way of providing some
AGC action on the received audio and implement effective tone
controls to “Clean up” unwanted stuff.