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Gamma match for VHF
The layot of the gamma-match,mnusthe capacitor, is one-half of a T
post 14 Nov 2024
Antenna for UHF VHF Links →
UHF-VHF Yagi Construction
These optimized wide-band antennas offer up to 16 dBi gain and 30 dB F/B ratio when mounted at 20 feet over average
VHF/UHF Portable Satellite Antenna
The antenna performance should match or surpass the Arrow antenna. The UHF section is made of 6 elements with gain-optimized spacing as opposed to 7 elements
Direttiva UHF
Boom cm.100 - riflettore cm.33 - 1 direttore cm.30, 2 direttore cm.29,5 - 3 direttore cm.29 - 4 direttore cm.29
2m beam 9 element
149
These optimized wide-band antennas offer up to 16 dBi gain and 30 dB F/B ratio when mounted at 20 feet over average
The antenna performance should match or surpass the Arrow antenna. The UHF section is made of 6 elements with gain-optimized spacing as opposed to 7 elements
Boom cm.100 - riflettore cm.33 - 1 direttore cm.30, 2 direttore cm.29,5 - 3 direttore cm.29 - 4 direttore cm.29
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
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