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Antena VHF yagi 5 elementos 144Mhz
Antena VHF yagi 5 elementos 144Mh
post 02 Aug 2024
Antenna for UHF VHF Links →
Homebrew antenna VHF
You build a 1/4 wavelength groundplane antenna
L'antenne colineaire
All elements are connected to the boom directly NOT isolated from the boom, you may mount them on top of the boom or trough the boom
L'antenne Lindenblad
The Lindenblad antenna has ideal features for receiving transmissions from moving satellites during very low passes on the horizon.
Laptop Mini Wireless Antenna
The size was chosen so it could be housed inside the tube of an old pen, to provide rigidity and protection to the antenna
Log per. 144-1,2GHz
Log periodica 144-1,2 GHz ricavata da un'antenna televisiva Fracarro LP345HV
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You build a 1/4 wavelength groundplane antenna
All elements are connected to the boom directly NOT isolated from the boom, you may mount them on top of the boom or trough the boom
The Lindenblad antenna has ideal features for receiving transmissions from moving satellites during very low passes on the horizon.
The size was chosen so it could be housed inside the tube of an old pen, to provide rigidity and protection to the antenna
Log periodica 144-1,2 GHz ricavata da un'antenna televisiva Fracarro LP345HV
23cm Yagi Antenna building Finished antenna at 1275 MHz SWR under 1:1.5 at resonant frequency
50 MHz preamp Gain 26dB with the BFG135 Preamps for 144 and 430 MHz, for 50 MHz, the BFG135a is a cheap transistor and in my view rather strong. It is not easily damaged by static discharge or RF power. FG connection
30 Volt Computer Power Supply Stack A bonus was that i discovered that these did not need a standby load connected to the supply to keep them running just apply mains power and close the Start lead to ground