Thanks Eric. Yea, I do now recall reading on here about having problems using CAT5 to extend the antennas. I'll have to remember to carry a roll of 18/2 shielded on the van for future installs.

If I'm at the clients house again, I'll try that method with the cat5. And we're using two MX900s in his house. One for the main watching area, and one for Zone2 operation. We're actually getting very good coverage outside using just the one antenna in the middle of the house (usually we don't get good reception towards the back of a yard using an antenna in the middle of the house and have to place one against an exterior wall.)

Are you guys gonna make the RFX250 compatible with the 800/850 in the future?