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A Batwing Antenna Design Challenge


Dimensions for a center frequency of 434.5 MHz (which should cover 370 to 500 MHz with a VSWR of 1:1.1 or less
post 11 May 2024
A Batwing Antenna Design Challenge

Antenna for UHF VHF Links

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Dual Band Half-Wave Flower Pot Antenna
The Flower Pot antenna can be readily modified to dual band

2 meter ssb yagi plans for sideband fun
Optimized using 144.250mhz as the center frequency which is in the middle of the SSB portion of the 2 meter band

2 Meter Slim Jim Antenna
This 2 Meter 300 Ohm Slim Jim antenna is constructed from regular 300 ohm twinlead

Vhf and Uhf Flowerpot Antenna
The antenna is constructed from rg58/u coax 22mm plastic plumbing

Diy a helical antenna for 432-435
diy a 14-turn home-made helical antenna for 432/435mhz


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