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80 Meter Antenna
I pondered all manner of antennas until I hit on a possibility a short vertical!!!! But in the attic? Not totally!
post 05 May 2024
Antenna 80 meter Links →
4 square 3650
Numerous tests and comparisons have shown that the antenna, despite its simplicity, works very well. Local measurements with stations from Rzeszów (6km) showed that F / B is above 20dB
80 and 160 mt-80ft for 80mt or 17 ft for 160mt
This is a vertically and horizontally polarized antenna the Linear loaded 1/4 wave length vertical radiator introduces very little loss
80 m 3/4 wave LLV
This is a vertically polarized Phased array. The left Vertical wire is 180 degrees out of phase with the middle and right Vertical wire. At 1/10 wavelength spacing from the right Vertical wire to the left Vertical wire it is producing a End-Fire Bidirectional Pattern,that developes a Gain of 5.9-DBi
40/80mt coil loaded dipole 23,3MT length
76
Numerous tests and comparisons have shown that the antenna, despite its simplicity, works very well. Local measurements with stations from Rzeszów (6km) showed that F / B is above 20dB
This is a vertically and horizontally polarized antenna the Linear loaded 1/4 wave length vertical radiator introduces very little loss
This is a vertically polarized Phased array. The left Vertical wire is 180 degrees out of phase with the middle and right Vertical wire. At 1/10 wavelength spacing from the right Vertical wire to the left Vertical wire it is producing a End-Fire Bidirectional Pattern,that developes a Gain of 5.9-DBi
Antenna switch arduino for icom IC-7300 A solution built around an arduino nano and one of the readily available four relay switching boards
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