VHF/Active GPS Antenna
118 to 137 & L1/L2
The 21-50-110-1 is a combination, vertically polarized VHF communications and circularly polarized active GPS antenna suitable for mounting on the upper surfaces of helicopters and sub sonic fixed wing aircraft.
Designed as a short, top loaded monopole for VHF communications and having a top mounted patch antenna with integral low noise amplifier (LNA) for GPS, this antenna has separate decoupled feeds to allow for simultaneous operation of both systems.
Mechanical construction uses a glass reinforced thermoplastic shell with foamed-in-place internal elements. N-type (VHF) and TNC (GPS) connectors are fitted to the aluminum base plate which is DC grounded for p-static protection. Power for the LNA is fed via the GPS coaxial cable.
VHF 118-137 MHz
GPS 1565-1586 and 1217-1238 MHz
+1 dBi (VHF)
+3 dBiC @ Zenith (GPS antenna)
+ 33 dB (LNA)
VHF ≤ 2.5:1
GPS ≤ 1.5:1 (antenna)
|Impedance (nominal)||50 Ohms|
25 Watts (VHF)
1 Watt (GPS)
RH Circular (GPS)
|Antenna RF Connector||
N Type Female (VHF)
TNC Female (GPS)
|DC Power for GPS Pre-Amp||2.5 - 24 V ≤ 50 mA (typical)|
|Height||10.5 inches (267mm)|
|Weight||2.75 lbs (1.25Kg) max|
- Antenna - Urethane Lusterless Black
- Other finish options are available.
- Please specify finish required when ordering.