>>2954495
If you're close to broadcast antennas, use an attenuator. If you're far from broadcast antennas, use a unidirectional antenna like a Yagi with a signal booster for DTV signals. If you're close to a cell tower, use a LTE filter. If you want to make your own antennas, use a wavelength calculator and start with copper foil tape on cardboard or plastic, with a 75-Ohm to 300-Ohm matching transformer.

https://www.channelmaster.com/pages/tv-antenna-map