Radio frequency channel shunting transmission line transformer type arrester is the arrester device of installing between transmitter impedance fine setting network output mouth and feeder entry. This arrester adopts the characteristic impedance coaxial cable line the same with feeder characteristic impedance, and the coiling makes 1 on high magnetic permeability, low -loss ferrite core: 1 transmission line transformer. Characterized by: the RF power who exports (to sky feeder orientation) transmitter of forward transmission has high pass, broadband and matching characteristic, mainly has isolation, reposition of redundant personnel and attenuation characteristic for the thunder and lightning energy of low frequency component to reverse (from day feeder to the transmitter orientation) that attacks to reach the transmitter system that both guarantees and normally work, can play lightning -arrest effect again. Have thorough characteristics rational in infrastructure, lightning -arrest.