Hope this helps.......

47CFR95.207 (d) Your R/C station must stop trans- mitting if it interferes with: (1) Authorized radio operations in the 72–76 MHz band; or (2) Television reception on TV Chan- nels 4 or 5. (g) Stations in the 72–76 MHz range are subject to the condition that inteference will not be caused to the remote control of industrial equipment operating on the same or adjacent fre- quencies or to the reception of tele- vision transmissions on Channels 4 and 5. These frequencies are not afforded any protection from interference due to the operation of fixed and mobile stations in other services assigned to the same or adjacent frequencies.

There are Primary (licensed) users of 72mhz which are usually industrial remote control cranes or railroad crossing gates. We are Secondary (unlicensed) users of 72mhz and by regulation have to accept any interference from Primary users without interfering in any way with them.

Brad