RF tracking was even more sophisticated in WWII. The Gestapo developed a man-portable set worn under a trenchcoat: https://www.cryptomuseum.com/df/gurtelpeile

RF tracking was even more sophisticated in WWII. The Gestapo developed a man-portable set worn under a trenchcoat: https://www.cryptomuseum.com/df/gurtelpeiler/index.htm https://www.cryptomuseum.com/df/gurtelpeiler/index.htm