I asked this question last week but still need to improve my understanding. Today I am able to connect to WB5CON at the first try, every time. We seem to hear each other well. I send mail and then *TX* <SOH>0.s&!!F1CE<EOT><US><SOH>.s"%%338C<EOT> *TX* <SOH>0.s&!!F1CE<EOT><US><SOH>0.s"%%338C<EOT> *TX* <SOH>0.s&!!F1CE<EOT> Today I noticed that my transmitter transmits after each transmission from WB5CON. Does that imply that we are still hearing each other well , or is my transmitter activated simply according to a timing factor ? If we are hearing each other on every occasion, I do not understand why the email does not get through and why I do not get a "message sent" indicator . Perhaps the two stations ping-ponging does not mean they are hearing each other. I did eventually get the message through. Andy K3UK