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End fed antenna per i 160m
End-fed antenna un filo e 1/4 d'onda per i 160 metri e cioe lungo 40 metri. Ho costruito un circuito LC di prova, utilizzando una induttanza variabile roller inductor da 140uH e 1 condensatore variabile da 500 pF da 5 kV, piu uno in parallelo del tipo door knob da 500pF 21kV, si trattera poi di leggere i valori di C e di L e quindi di mettere i componenti fissi per ridurre le spazio
post 18 Jun 2024
Antenna 160 meter Links →
160/80m Coaxial Loop Receiving Antennas
I built one for 80m. I found that with a proper pre-amp, such the Palomar series, or Ameco's PT-3 there was a significant lowering of noise
160 meter vertical antenna's base loading
There are actually two coils, connected in series. The upper part of the winding consists of 37-3/4 turns
160 meter Half Sloper with radials
This is an antenna system made up of four 65 foot verticals with a quarter wave spacing. With radials this system takes up a 200x200 foot area
Invisible DX Antenna for the Low Bands
This paper describes a multi-band DX antenna for the 160m-40m amateur radio bands with low visibility but great performance for long distance communication
160mt
GP 80m / 160m in full splendor
90
I built one for 80m. I found that with a proper pre-amp, such the Palomar series, or Ameco's PT-3 there was a significant lowering of noise
There are actually two coils, connected in series. The upper part of the winding consists of 37-3/4 turns
This is an antenna system made up of four 65 foot verticals with a quarter wave spacing. With radials this system takes up a 200x200 foot area
This paper describes a multi-band DX antenna for the 160m-40m amateur radio bands with low visibility but great performance for long distance communication
GP 80m / 160m in full splendor
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
Interface-for-digital-broadcasts-with-integrated-audio 4-port HUB, with a TUSB2046. With port 1 of the HUB we drive the FT232RL; with port 2 the PCM2904, furthermore, we decided to leave ports 3 and 4 free