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A 2-Meter Phased-Array Antenna
A small vertical phased array that can easily be built and cost is minimal
post 24 Aug 2024
Antenna for UHF VHF Links →
5 element ZL special for 2m band
A five element beam antenna. Two folded dipoles are spaced a quaterwave apart and fed a quarter wave out of phase using a twisted quarter wave feed line. This results in the waves adding in one direction
Band 144 MHz end 435 splitter antenna
The band splitter is just a 250 MHz High Pass Filter and a 250 MHz Low Pass Filter connected together
Bibanda per i 144 Mhz e i 430Mhz del tipo LOG PERIODIC
Antenna bibanda per i 144 Mhz e i 430Mhz del tipo Log periodic a 4 elementi
Build a 2 Meter, 5/4 Wave Antenna By Mike Martell
This antenna is unique in that it is enclosed entirely in 3/4'' PVC which makes the design a little more complicated. The primary problem is that PVC tubing has a significant velocity factor which causes RF
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A five element beam antenna. Two folded dipoles are spaced a quaterwave apart and fed a quarter wave out of phase using a twisted quarter wave feed line. This results in the waves adding in one direction
The band splitter is just a 250 MHz High Pass Filter and a 250 MHz Low Pass Filter connected together
Antenna bibanda per i 144 Mhz e i 430Mhz del tipo Log periodic a 4 elementi
This antenna is unique in that it is enclosed entirely in 3/4'' PVC which makes the design a little more complicated. The primary problem is that PVC tubing has a significant velocity factor which causes RF
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
Amateur radio kits by Kanga US
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