Question, Does anyone know how I could set a pair of gp-300's with
5-tone to call each other, with an acknoledgement back then to
unsquelch - the users have thier qso then to close the squelch again ?
I know 5-tone may not be allowed on the ham bands but this is for
another application.

There are a lot of options to set on the RSS but if anyone can help me
even by emailing me a code file of a pair of radios etc.

Regards. Andy.