Review on 75 ohm DC-3 GHz Lightning Surge Protector F Female to F Female with 90 V Gas Tube Surge Arrester (Lightning Arrester F Female to Female) by Jimmy Hargrove

This is a surge arrester for protecting antenna receiving devices. Connect this device to your TV's preamp input to absorb the build-up of static electricity that attracts lightning. The device dissipates static electricity through the grounding terminal, which must be grounded in order for the device to perform its function. This is a quality product. I wouldn't install a TV antenna without it. Products like this have been used in commercial landmobiles (sheriff/fire department communications repeaters) for decades because an ounce of prevention costs far more than a pound of cure. I am a radio amateur with 3 years of experience. 73 K5EBM.