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Homebrew antenna VHF
You build a 1/4 wavelength groundplane antenna
post 02 Dec 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
Collinear antenna building
An interesting article about co-linear or collinear antenna building
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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
An interesting article about co-linear or collinear antenna building
Microsat Ham radio shop for ulari project, aprs, aprs with radio, bluetooth, gps, gsm, ham radio interfaces, weather,accessories, cables to radio
Amateur radio kits by Kanga US
Nightfire Electronics Source of small electronic kits and parts