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4-Band c.o.l.a antenna 20-17-15-10m
deploying a centre fed open loop half-wave dipole in a square shape lowers the impedance to around 8-12ohms.steve hunt g3txq, took a different approach and his design uses a 1:4 step up balun transformer to compensate for the low impedance
post 10 Apr 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
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