When looking up a callsign in a Callbook, this release verifies that the callsign returned by the Callbook with the lookup results matches the original callsign; if it doesn't, a lookup on the original callsign's base callsign is performed; if successful, only the name and address for the base callsign are utilized. (tnx to Alan, AA4FU) DXKeeper 5.5.9 is available via http://www.dxlabsuite.com/download.htm 73, Dave, AA6YQ