Covering the UHF frequency band 420 to 450 MHz, the 20-30-04CM is a lightweight antenna intended for ground use.

Construction uses contoured printed circuit elements encased within an epoxy glass composite structural support, the complete assembly being bonded into an aluminum alloy ’CECOM’ mounting plate.

Designed as an elevated center fed dipole, this antenna is tolerant of different mounting circumstances such as tripod, shelter, vehicle, ship or mast and is closed cell foam filled for reliable operation in worldwide environmental conditions.