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Sophisticated Helix Antenna Design,with matching Coax to 50 Ω
post 08 Jul 2024
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Sophisticated Helix Antenna Design,with matching Coax to 50 Ω
Illuminate an offset parabola 80 cm
CM Helix, SatNOGS, v4, CM Frequency: 434 MHz, CM Wavelength: 691 mm, CM c=299792458 m/s, CM Radius = 110 mm, CM Turns: 8
MHz Helical Antenna
I decided to build a pair of helical antennas, one for each circular sense. Helical antennas have broad bandwidth, loose construction tolerances, and for 900 MHz, wouldn't be too big
New Helix Antenna Design
Reflector Loop Dia: 10.66" The reflector is positioned 0.375" ahead of the start point of the first helix turn, first 4 Turns: 10.32", Next 7 Turns: 8.68", Last 12 Turns: 8.40
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Sophisticated Helix Antenna Design,with matching Coax to 50 Ω
CM Helix, SatNOGS, v4, CM Frequency: 434 MHz, CM Wavelength: 691 mm, CM c=299792458 m/s, CM Radius = 110 mm, CM Turns: 8
I decided to build a pair of helical antennas, one for each circular sense. Helical antennas have broad bandwidth, loose construction tolerances, and for 900 MHz, wouldn't be too big
Reflector Loop Dia: 10.66" The reflector is positioned 0.375" ahead of the start point of the first helix turn, first 4 Turns: 10.32", Next 7 Turns: 8.68", Last 12 Turns: 8.40
Antenna switch arduino for icom IC-7300 A solution built around an arduino nano and one of the readily available four relay switching boards
Satellite Antenna Rotator Controller and TRACker ARCTRAC is a portable integrated satellite tracking system
Duplexer 2m-70cm- Usare un'antenna bibanda 2/70 con due radio separate V/UHF, usare due antenne separate V/UHF con una singola radio bibanda