I think the -B version is still acceptable in the US. No telling in Europe!Simon... you do realize that it is illegal to transmit on that radio in the US since 1997....
http://wireless.fcc.gov/services/index.htm?job=operations_1&id=aircraft_stations#King Radio
Given that the EU rule making machine is generally stricter that the US, I'm sure the frequency stability of the KX-175 is also not acceptable in Euroland...
I presume that the application in question is "Recieve Only"?
I think the -B version is still acceptable in the US. No telling in Europe!