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137 MHz Double Cross Antenna
- The DCA is two pairs of dipoles, each pair crossed to produce circular polarization alongtheir support axis. When one pair is fed 90 degrees later than the other, the DCA has anelliptically polarized pattern over the entire hemisphere above it
post 20 Apr 2025
Antenna for UHF VHF Links →
Homebrew antenna VHF
You build a 1/4 wavelength groundplane antenna
L'antenne colineaire
All elements are connected to the boom directly NOT isolated from the boom, you may mount them on top of the boom or trough the boom
L'antenne Lindenblad
The Lindenblad antenna has ideal features for receiving transmissions from moving satellites during very low passes on the horizon.
Laptop Mini Wireless Antenna
The size was chosen so it could be housed inside the tube of an old pen, to provide rigidity and protection to the antenna
Log per. 144-1,2GHz
Log periodica 144-1,2 GHz ricavata da un'antenna televisiva Fracarro LP345HV
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You build a 1/4 wavelength groundplane antenna
All elements are connected to the boom directly NOT isolated from the boom, you may mount them on top of the boom or trough the boom
The Lindenblad antenna has ideal features for receiving transmissions from moving satellites during very low passes on the horizon.
The size was chosen so it could be housed inside the tube of an old pen, to provide rigidity and protection to the antenna
Log periodica 144-1,2 GHz ricavata da un'antenna televisiva Fracarro LP345HV
Ferrite Shop Ferrite-shop on-line shop, cable clamps,toroids, cable cores, technic,ferrite material choice
Amateur radio kits by Kanga US
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