I'm installing a 60ft tower about 400ft from my house for uhf/vhf. I'm
planning to use a Channel Master rotor which I haven't purchased yet. I've
buried 1"pvc conduit to tower and planning the wire pull for the antenna &
satellite coax plus the rotor cable. From my research 3c/22ga. wire will
control all C M rotors. Since I don't know the power requirements yet of the
I use all Ham-3 and Ham-4 type rotators which need 8 conductors. Only
two of those (which run the motor) need to be larger size. For long runs to
the tower I use Romex #14 for the motor wires and CAT5 for the other 6.
Cheaper than buying "heavy-duty" rotator cable.

BTW on VHF/UHF you probably want some serious hardline for the RF link if
you are looking at a 500' cable run.

Tor
N4OGW