Microphone for G4 Mirror Door

Tue Apr 15 07:04:18 PDT 2003

I want to use an Amateur Radio program, EchoMac, but need to attach a microphone to my G4 1ghz Mirror Door machine.  Anyone have any recommendations as to which mic will work and where it might be purchased?  The information with the G4 does not address the plug configuration or the impedance of the connection.
I have one of the Griffin iMic attachments for the USB port but have not used it so far.  Any recommendations on using that attachment??
Thanks
Harold