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Antenna HB9 144 - 146 Mhz
Antenna HB9 fa parte della famiglia delle antenne logaritmiche, piu' precisamente è una log periodica a soli 2 elementi
post 29 Jan 2024
Antenna for UHF VHF Links →
Antena ringo para 144 MHz
The ringo antenna is commercially manufactured and very easy to build.It consists of an irradiating element and its base that is connected to the pipe that holds it, acts as earth or ground of the antenna
Antenna building for 70 cm
The opened DE-Box. The coax used is MIL-quality RG58 , the shown split open coax ends are about max. length that I would tolerate
Antenas fijas para satelites
The Turnstile are two directional two elements, physically crossed at right angles and electrically offset 90' to obtain a circular polarization
Antenna 144/430
This vertical VHF antenna is convenient as a base for a dual-band portable. It allows you to fully realize both the power of the transmitter and the sensitivity of the receiver
Antenna Ground Plane 1/4 d'onda autocostruita per VHF-UHF
Questa antenna puo' funzionare da circa 75 MHz a... infiniti MHz, semplicemente allungando o accorciando i 5 stili secondo la seguente formula...
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The ringo antenna is commercially manufactured and very easy to build.It consists of an irradiating element and its base that is connected to the pipe that holds it, acts as earth or ground of the antenna
The opened DE-Box. The coax used is MIL-quality RG58 , the shown split open coax ends are about max. length that I would tolerate
The Turnstile are two directional two elements, physically crossed at right angles and electrically offset 90' to obtain a circular polarization
This vertical VHF antenna is convenient as a base for a dual-band portable. It allows you to fully realize both the power of the transmitter and the sensitivity of the receiver
Questa antenna puo' funzionare da circa 75 MHz a... infiniti MHz, semplicemente allungando o accorciando i 5 stili secondo la seguente formula...
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
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