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Antenna loop per i 40 metri
Viene descritta una antenna per ricezione in banda 40 metri ed illustrati alcuni problemi relativi all'ascolto su frequenze da 3 a 8 MHz
post 27 Jun 2024
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Making the LFA Loop
To build an LFA but the prospect of making a loop is a little challenging
Multi-loop Rectangles and Compact Arrays
Is composed of four rectangles. But, before studying this antenna and its use as an array component
Octoloop antenna is a shielded multiturn loop
The octoloop is easy to make You need some 3/4 in hard copper pipe, eight 45 deg elbows, and two male threaded adapters
Portable Magnetic Loop Antenna 20, 30
Described here is a simple multi-band magnetic loop antenna designed for 20, 30 and 40 metres
Programma di calcolo del condensatore
The diagram shows a capacitor with three 4-square-inch plates, separated by 0.25 inches of air. Its calculated capacitance is 7.18 picofarads
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To build an LFA but the prospect of making a loop is a little challenging
Is composed of four rectangles. But, before studying this antenna and its use as an array component
The octoloop is easy to make You need some 3/4 in hard copper pipe, eight 45 deg elbows, and two male threaded adapters
Described here is a simple multi-band magnetic loop antenna designed for 20, 30 and 40 metres
The diagram shows a capacitor with three 4-square-inch plates, separated by 0.25 inches of air. Its calculated capacitance is 7.18 picofarads
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