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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
post 19 Dec 2021


Antenna for UHF VHF Links

153



2 x 5 Element Yagi array for 144MHz
A 2 x 5 antenna may have similar basic gain to say a well made 10 element long yagi but with slightly different distribution of azimuth and altitude

A Halo 4 Stack for 70cm on the Cheap
Start by cutting a piece of copper tubing per the dimensions in the diagram above

A Yagi-Uda antenna for MURS and 2-meters
The yagi that I built was designed for the lower 3 MURS channels but was also to be usable on 2-meters

All Copper Pipe Hentenna Version for 2 Meters
I recommend building the 1/2'' copper pipe 2 meter Hentenna to these dimensions.Overall length = 40 inches Overall width = 12 3/4'' Feed point = 7 3/16'' to center line of T connector

10 m| 12 m| 15 m|
17 m 20 m| 2 m|
23 cm| 30 m| 40 m
6 m| 70 cm| 80 m| 160 m| 136 khz
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