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Quadrafilar Helix antenna for 436 Mhz


This is an antenna that I just built. I intend on using for receiving the AO-27 downlink at 436.800 +/- doppler. It is built with right hand circular polarization, and the gain is supposed to be in the neighborhood of 3 DB
post 29 Jan 2024
Quadrafilar Helix antenna for 436 Mhz

Helix Antennas Links

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435MHz 12 turn Helix Antenna
This 50 ohm impedance antenna, when powered with 25-100W of RF in SSB, joins the Molniya orbiting satellites as AO-40 and AO-10

A Helix antenna for 2 metre satellite
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A Home made Helical antenna for a GPS
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