John, You might consider to participate in the Winlink 2000 system. The availability of a PTCII to handle Pactor 1 and Pactor 2 traffic is necessary, an Pactor 3 upgrade will be made available from the network coordinator. Contact Steve Waterman at k4cjx at comcast.net and check out http://winlink.org for more info. Regards, Dick Knol PA3DUV