UHF Military Satcom QFH Antenna description
The UC-3004-531R, +4 dBic UHF Military Satcom QFH Antenna is a Quadrifilar Helix Antenna (QFHA), measuring 10 cm/4" OD x 46 cm/18" H, designed to operate through UHF Military satellites (MilSat). Coverage is Omnidirectional, when mounted upright. The Axial Ratio of a QFHA is stable over a broader range of elevation angles when compared to an X-Wing/Turnstile or Egg-Beater radiating structures. This MILSATCOM QFH Antenna is thus well suited for temporary and fixed sites, as well as mobile platforms over a wide spread of world latitudes. It also does not require a ground plane or a reflector for normal operation.
UC-3004-531R Satcom QFHA Technical Specifications
- Frequency range: 243-320 MHz (useable 360-380 MHz)
- Coverage: Omni-directional, Hemispherical
- Polarization: Circular (AR 2 dB)
- Peak Gain: +4 dBic
- Nominal Impedance: 50 ohm (RF) / Short Circuit (DC)
- Input Power: 50 Watt CW
- VSWR: 2.0
- Connector: Type N, Female on side
- Dimensions:
- Housing 10 cm (4") OD x 46 cm (18") h
- Bottom flange 19 cm (7.5") OD x 12 mm (0.5") h
- Mounting: 8 screws, M6 (#1/4-20)
- Operating Temperatures: -40°C to +85°C
- Weight: 1.5 kg (3.2 lbs)
- Shipping Weight: 2 kg / 4 lbs
Similar UC-1464-531 QFHA Model Drawing (for mounting hole data) 
NOTES
:
- Does not require a ground plane