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7-Element-Yagis stacked for the 2m-Band


The vertical stacking of 4 Yagis gives an excellent contest group with a very low vertical elevation
post 17 Apr 2024
7-Element-Yagis stacked for the 2m-Band

Antenna for UHF VHF Links

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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



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

30 Volt Computer Power Supply Stack

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