![File:General Electric advertisement for Nashville radio station W47NV (1941).jpg - Wikimedia Commons File:General Electric advertisement for Nashville radio station W47NV (1941).jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/d/d0/General_Electric_advertisement_for_Nashville_radio_station_W47NV_%281941%29.jpg)
File:General Electric advertisement for Nashville radio station W47NV (1941).jpg - Wikimedia Commons
![This May 17, 2016 photo shows the KOLN transmitting station and 500-foot-tall radio tower in Lincoln, Neb., on May 17, 2016. The shelter, protected by 12-inch concrete walls, was designed to withstand This May 17, 2016 photo shows the KOLN transmitting station and 500-foot-tall radio tower in Lincoln, Neb., on May 17, 2016. The shelter, protected by 12-inch concrete walls, was designed to withstand](https://c8.alamy.com/comp/2P1BCD6/this-may-17-2016-photo-shows-the-koln-transmitting-station-and-500-foot-tall-radio-tower-in-lincoln-neb-on-may-17-2016-the-shelter-protected-by-12-inch-concrete-walls-was-designed-to-withstand-a-catastrophe-and-it-was-built-to-play-a-singular-but-critical-role-allowing-the-radio-station-to-continue-broadcasting-during-the-worst-of-times-eric-gregorythe-journal-star-via-ap-local-television-out-koln-tv-out-kgin-tv-out-klkn-tv-out-mandatory-credit-2P1BCD6.jpg)
This May 17, 2016 photo shows the KOLN transmitting station and 500-foot-tall radio tower in Lincoln, Neb., on May 17, 2016. The shelter, protected by 12-inch concrete walls, was designed to withstand
![Docomo conducts world's first trial of transmissive metasurface on window to deliver indoor radio waves to outdoor foot of building | TelecomTV Docomo conducts world's first trial of transmissive metasurface on window to deliver indoor radio waves to outdoor foot of building | TelecomTV](https://www.docomo.ne.jp/english/info/media_center/pr/2023/images/0130_02_01.jpg)
Docomo conducts world's first trial of transmissive metasurface on window to deliver indoor radio waves to outdoor foot of building | TelecomTV
![Antenna tower and transmitter building for short wave radio station W1XEQ, radio station WNBH, and police radio station WPFN, New Bedford, MA - Digital Commonwealth Antenna tower and transmitter building for short wave radio station W1XEQ, radio station WNBH, and police radio station WPFN, New Bedford, MA - Digital Commonwealth](https://bpldcassets.blob.core.windows.net/derivatives/images/commonwealth:8s45qq38v/image_access_800.jpg)