Oh and by the way, the two-tone DTMF signal you heard at the end of the EAM is a code used to unmute the remote receivers after transmitting. I thought they were supposed to do away with the DTMF tones and use a different system, but I guess they haven't done so. The unmute code is 9#. Tom Sevart Frontenac, KS http://www.geocities.com/n2uhc