The C209-1-1 is a unique dual-band design wherein the entire structure radiates as a monopole at VHF frequencies (providing maximum achievable efficiency) while a dipole embedded in the VHF structure provides UHF coverage. This vertical arrangement also provides ideal radiation pattern performance and superior isolation versus independent apertures. Radiation patterns are omnidirectional in azimuth with peak gain levels centered at the horizon. The C209-1-1 provides complete VHF (SINCGARS) coverage and UHF (225-450 MHz) coverage.
The C209-1-1 is constructed of a high strength radiating element structure and is fitted to a spring assembly that allows the antenna to absorb shocks yet return to its proper vertical orientation for operation.
