47 CFR § 95.725 - Interference, RCRS.
(a) RCRS stations must not cause interference to:
(2) Broadcast television reception on TV Channels 4 or 5.
(1) Industrial, scientific or medical devices (seepart 18 of this chapter) operating in the 26-28 MHz band; and,
(2) Fixed and mobile stations in other services operating on the same or adjacent channels.