Remote servo control, some assistance pls

Hi All

I am looking from some solutions to use as an alternative to standard
hobbyist radio control equipment.

I would like to replace what I have with a remote system that I can
set the maximum radio output of, and select a frequncy to use.

The purpose is for control  of servos over limited range low power
radio control point to point, about 100 ft , controlling various
angles of a DSLR camera on a pan and tilt mounting..

The camera is remotely positioned from the controller and the
viewfinding is done via low power 2.4ghz downlink.

Id like to make a more proprietry system that has more lattitude for
control of it with respect to its output and selecting a legal
frequency under our LPFM class licence range.

Rather than hacking up radio control gear which I have done already.

The rest to remain much the same as a 6 channel radio controller.

Some ideas or pointers on wireless servo controllers would be
appreciated.

Cheers
Dave