TV Antenna Preamp 1-1-Port TV Antenna Pre-Amplifier, Built-In LTE Filter, 17-30Db Gain, Compatible with Non-Amplified TV Antennas. Includes Built-in LTE Filter with ultra low-noise - Blocks Interference From 3G, 4G, 5G Smartphones and Transmitters with EMI & FM Out of Band Filtering (Does Not Pass FM Radio Signals).
eBay