Don't know. 2.4G radios comprise the eleven transmitters refered to above. The part causing the interference/rubbing/cutting is a component on the circuit board that is mounted on the inside back cover of the 2.4 X9303s. If there is a circuit board mounted on the inside back cover of the 72Mhz models, it may be of a different size/shape that doesn't get so close to this wire bundle.