Chelton has a wide range of traditional Very High-Frequency Omnidirectional Range (VOR), Localiser (LOC) and Glide Slope (GS) antennas for airborne ILS navigation, as well as Microwave Landing System (MLS) antennas.

https://www.chelton.com/our-capabilities/antennas/navigation-antennas/ils-mls-vor-loc-gs/