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Hentenna per i 144 Mhz


div>Rientra nella categoria delle loop e' stata inventata e sviluppata attorno agli anni 1970 da un gruppo di tre radioamatori giapponesi JE1DEU-JH1FCZ-JH1YST
post 14 Jun 2024
Hentenna per i 144 Mhz

Antenna for UHF VHF Links

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2 Meter Array
Here is a little project that I can recommend to anyone looking for a small vertical phased array

2 meter 146MHz 5/8 Ground plane antenna
The reason for selecting the 5λ/8 wave ground plane is that for a simple single element antenna it appeared to have increased capture aperture when compared to the standard λ/4 wave length ground plane antenna and has a relatively low angles of radiation in comparison with other similar antennas

2 meter dipole antenna
The reason for selecting the 5/8 wave ground plane is that for a simple single element antenna it appeared to have increased capture aperture when compared to the standard 1/4

2 Meter RDF dipoles
Is a functional prototype of a upcoming Byonics product in our T-Hunting / RDF product line


23cm Yagi Antenna building

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

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

interface-for-digital-broadcasts-with-integrated-audio

Interface-for-digital-broadcasts-with-integrated-audio 4-port HUB, with a TUSB2046. With port 1 of the HUB we drive the FT232RL; with port 2 the PCM2904, furthermore, we decided to leave ports 3 and 4 free