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Antenna Homemade SP3L CobWeb
cobweb-10m-12m-15m-17-20m was the design from g3tpw. and work very well, the only limitation was the small bandwith. after a year i was very happy with this kind of antenna and decided to make a definitive cobweb. this time i built the sp3l variant with an inproved bandwith
post 29 Feb 2024
Antenna Cobweb Links →
Cobweb Antenna omnidirectional
It comprises 5 parallel dipoles bent into a square shape and mounted on a support structure made of fibreglass poles
Cobweb Antenna
The wires above are 12-14 AWG basically speaker cables which are cut to 1/2 wavelength for each band the area of the band you are interested
Cobweb Antennas
These are my SWR readings so far: 28.782→ 1:2 - 24.248→ 1.2 - 20.633→ 1:2 - 17.664→ 1:2 - 14.079→ 1:1
Ultra Light Cobweb Antenna
Cobweb Antena is the best omnidirectional antenna for 6m, 10m, 12m, 15m, 17m, and 20m HF Bands
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It comprises 5 parallel dipoles bent into a square shape and mounted on a support structure made of fibreglass poles
The wires above are 12-14 AWG basically speaker cables which are cut to 1/2 wavelength for each band the area of the band you are interested
These are my SWR readings so far: 28.782→ 1:2 - 24.248→ 1.2 - 20.633→ 1:2 - 17.664→ 1:2 - 14.079→ 1:1
Cobweb Antena is the best omnidirectional antenna for 6m, 10m, 12m, 15m, 17m, and 20m HF Bands
Ferrite Shop Ferrite-shop on-line shop, cable clamps,toroids, cable cores, technic,ferrite material choice
Amateur radio kits by Kanga US
50MHz to 28MHz RX Converter The concept of the rx converter is quite simple and nothing really new. the local oscillator is a standard colpitts crystal oscillator producing the 22mhz lo signal