 Norbert Heuser has developed a line of frequency harmonizing plates that range in effectiveness from 30 to 300 feet in diameter. There's one for your keyring while you drive, and there's also the highly acclaimed model SD1 Human Protect. I wear one around my neck constantly, and there's a noticeable and unpleasant effect I can feel strongly when I don't wear it around all these 5G transmission towers. As for the whole house or office plates, our two Volga Wolfhounds actually sleep next to them.