Antenna Helix 435 MHz
It's actually 9.25 turns, including the quarter-turn impedance transformation to get a 50 ohm feed
post 21 Dec 2021
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Long range wifi with helical antennas
Helicals can be made with only household parts, a hot glue gun and a soldering iron
Helical antenna Wikipedia
This 50 ohm impedance antenna allows, when powered with 25-100W of RF in SSB, to reach satellites with Molniya orbit like AO-40 and AO-10
Helical Feed Antennas
Helical antennas have long been popular in applications from VHF to microwaves requiring circular polarization, since they have the unique property of naturally providing circularly polarized radiation
Helical Antenna
Axial-mode Helical Antenna
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Helicals can be made with only household parts, a hot glue gun and a soldering iron
This 50 ohm impedance antenna allows, when powered with 25-100W of RF in SSB, to reach satellites with Molniya orbit like AO-40 and AO-10
Helical antennas have long been popular in applications from VHF to microwaves requiring circular polarization, since they have the unique property of naturally providing circularly polarized radiation
Axial-mode Helical Antenna
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