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Single band copper pipe J antenna dimensions


Single band copper pipe J antenna dimensions

The antenna’s 1/2 wavelength radiator,the lower section, Section B, is the 1/4 wavelength tuning stub

post 27 Oct 2024


Antenna jpole Links

80



2 meter J-Pole
Cut the tubing to the size shown for the desired band. The only section where size is not critical is the mast section. Use any size you desire for mounting purposes

2 meter Aluminum Slim Jim Antenna
The Slim Jim is generally characterized as an end-fed vertical folded dipole. As with all end fed dipoles some sort of impedance matching is necessary to keep the SWR down

3 meter Slim-Jim Antenna
The gamma match consists of a 150mm length of 10mm aluminium tubing

Project antenna for 2 meter
The gamma match consists of a 150mm length of 10mm aluminium tubing

A slim antenna for vhf band
To build it I use pieces of 450 Ohms leader line approx. 154cm, a PVC tube approx. 200cm, rope,SO-239 female connector, RG-58 about 1,5meter


Antenna splitter per VHF-UHF per quattro ricevitori

Antenna splitter per VHF-UHF per quattro ricevitori Chi dispone di una sola antenna e vuole collegarvi più di un ricevitore necessità di uno splitter

Kits and Components

Amateur radio kits by Kanga US

50MHz to 28MHz RX Converter

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