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A multi-turns magnetic-loop for the top band
Magnetic-loop that I am using for the 160m band, wich provides the best rejection of the white band noise generated by the 380kV power line, passing some 200m
post 22 Jun 2024
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Magnetic loop antenna new theory
The loops shown are all coupled with a ferrite transformer which is used to match the 50 ohms coaxial feeder to the feed point resistance of the loop
Loop Magnetic
Diameter 1.27 meters. Perimeter 4 meters. Width 80 mm. Material Dural alu.Loop antenna with manual tuning. Motor drive is planned
Magnetic Loop Antenna
Although a magnetic loop antenna aka small loop antenna is very compact, its efficiency is close to a half-wavelength dipole if carefully built
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The loops shown are all coupled with a ferrite transformer which is used to match the 50 ohms coaxial feeder to the feed point resistance of the loop
Diameter 1.27 meters. Perimeter 4 meters. Width 80 mm. Material Dural alu.Loop antenna with manual tuning. Motor drive is planned
Although a magnetic loop antenna aka small loop antenna is very compact, its efficiency is close to a half-wavelength dipole if carefully built
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