Chelton are world leaders in the design and manufacture of tuneable antennas from 30MHz up to 1850MHz.
Chelton has over 60 year's experience in the design and manufacture of tuneable and tuned antennas with supporting logic units and pioneered the development of electronically tuned airborne VHF/UHF antennas.
The tuneable antenna range includes traditional blade antennas as well as specialist low profile, conformal and integrated antennas covering capabilities from LF to SATCOM.
https://www.chelton.com/our-capabilities/antennas/communication-antennas/tunable/