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The VHF Quagi


The 2-meter version is usually built on a 14 foot 4.27M 1'' 25mm)x 3'' 75mm boom, with the boom cut down to taper it to one inch 25mm at both ends
post 18 Dec 2021


Antenna for UHF VHF Links

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Antenna HB9CV for 435 Mhz
The HB9CV+3 is a fullfeeded directional antenna with 2 active plus 3 passive elements. One might call this array "HB9CV-Yagi". This adds about 3dBd over a pure HB9CV and eliminates the squint of the classical 2-element HB9CV

Antenna system with four polarizations linear and circular
At VHF and UHF, hams utilize both linear and circular polarization linear polarization horizontal, vertical is used for normal direct ommunications

Antenna yagi due elementi VHF
Radiatore piu' direttore perchè almeno in teoria mi da circa 5,5 db di guadagno e un rapporto fronteretro pari o superiori ai 15 db

Antenne Helix
The helix antenna is used when a large gain and a circular polarization are required. It is less prevalent on amateur bands than yagi antenna but can make interesting services for satellite traffic

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