He can't find much better software or support than yours, Gommert. I've been nothing but happy with it. If the OP is as advanced and knowledgeable as you say then he probably already knows what the HP-1 is all about. If not, he's going to have quite a learning curve for such a "simple" scanner.
Without the whole master database from which to choose systems, it's basically just going to sit there complaining that there are no systems in range until he puts in a custom favorites list. I get a similar reaction from mine when I occasionally have issues with the GPS telling the unit it's in north Africa somewhere. (0.000 N, 0.000 W).
Good luck with it though. Enjoy the HP-1's automatic system selection from among your properly geotagged favorites. Just don't forget to geotag them or it'll have problems.
Bob Peloquin - KB1VUA
RR db admin (Massachusetts), USA
Scanner/GPS/Ham Radio enthusiast