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Top feed linear loaded 80 m 3/4 wave
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
post 29 Mar 2024
Antenna 80 meter Links →
Broadbanding half square antenna for 80mt
Half-square antenna is by naturerelatively narrow band.1On80 meters, for example, an SWR be-low 2:1 can be achieved anywhere in theband, but only over a relatively small range 60 to 100 kHz
Double bazooka/coaxial dipole antenna
A typical, dipole antenna has bandwidth of about 50 to 100 KHz
Hex Array 80/40 Meter Vertical
Homebrew 80/40 meter trap vertical. The trap is a coaxial cable trap, made from RG-213 cable
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Half-square antenna is by naturerelatively narrow band.1On80 meters, for example, an SWR be-low 2:1 can be achieved anywhere in theband, but only over a relatively small range 60 to 100 kHz
A typical, dipole antenna has bandwidth of about 50 to 100 KHz
Homebrew 80/40 meter trap vertical. The trap is a coaxial cable trap, made from RG-213 cable
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
Voice Recorder Gestito dall'integrato in questione ed offre la possibilità di registrare più messaggi per una durata massima di un minuto con buona fedeltà di riproduzione