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Microphone interface for ICOM

Headphone, microphone and foot PTT

Here is a simple interface for use ICOM equipment with hands free. Ideal for contests, with a simple foot switch and headphones with a microphone, you will can transmit and you will be able to use a log  without having to lay your microphone every time.
Icom interfaccia microfonica
ICOM RJ 45 Pinout
 1.   +8 V dc output
 2.   Frequency UP/DOWN
 3.   AUDIO output
 4.   PTT
 5.   Microphone GND
 6.   Microphone input
 7.   GND
 8.   Squelch switch