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UHF Amateur Satellite Antenna
UHF Amateur Satellite Antenna

UC-4364-531, +4 dBic UHF Amateur Satellite QFH Antenna

Item #: UC-4364-531R
Availability: Out of Stock
Price: $168.19


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    The UC-4364-531 is a Quadrifilar Helix Antenna (8 cm/3" OD x 23 cm/9" H) designed to operate through Amateur Radio satellites, without requiring an antenna rotator. The goal of this product is to offer Amateurs with space or community restrictions the ability to receive 70 cm HamSat signals, and communicate through orbiting repeaters (transponders). Ham satellites operate cross-band: you will generally need a VHF uplink transmit antenna for 2-way communications. A companion VHF unit is available UC-1464-531.

    Useful web pages about Amateur Satellites and relevant polarization are below:


    • Frequency range: 435-438 MHz
    • Coverage: Omni-directional, Hemispherical
    • Polarization: Circular (AR 1 dB)
    • Gain: +4 dBic
    • Nominal Impedance: 50 ohm (RF)
    • Input Power: Under 50 W CW
    • VSWR: 2.0 GRAPH
    • Connector: SMA Female, on the side of cylindrical housing, just above the flange base. Cable assembly may be purchased separately SMA Cables
    • Dimensions:
      • Housing 8 cm (3") OD x 23 cm (9") h
      • Bottom flange 10 cm (4") OD x 10 mm (0.38") h
    • Mounting: 4 screws, M4 (#10-32)
    • Operating Temperatures: -40C to +85C
    • Weight: 850 g / 1.8 lbs
    • Shipping Weight: 1 kg / 2.1 lbs


    • Does not require a ground plane
    • Specifications and prices are subject to change without notice

    Specifications, Availability and Prices are subject to change without notice