Aircraft Technic on X: "Here is a Marker Beacon antenna. Marker beacons are part of the ILS(Instrument Landing System) landing system. https://t.co/pnY9qq1GTI" / X
Universal Aircraft Marker By Plane Sights | Pilotshop.com
Aircraft ATC Marker Beacon GABLES XPDR Transponder Control Panel G-5326 D G5326 | eBay
Marker Beacon System * Function The marker beacon system is a radio navigation aid which determines the distance between the aircraft and the runway threshold. The system provides visual and aural indications