[lumpkin666]

Assuming that you'll be able to sign the appropriate agreements with all of the providers to allow you to redistribute the signal (doubtful since most of what's up there is intended for specific markts), your best bet is still to go with RG11 (or RG6 with good amps, or a distribution system modulating all changes on your rg6 drop) between the main drop and the cabins.

Since you've ruled that out, my second choice would probably be to obtain some relatively decent quality uhf video transmitters (I use a decent one that does a max of 500 feet, and can be modulated to transmit on any channel from ch14 to ch31 in the uhf band). Then get some decent quality uhf remote control extenders to connect to the 3 remote boxes. Tune the TV in each cabin to the corresponding frequency of the UHF transmitter connected to the appropriate fta receiver, and you're set.