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Conical Monopole Antenna
Antenna verticale alimentata alla base che ha un diagramma omnidirezionale ma un rendimento
post 29 Jun 2024
Antenna Vertical Links →
Super facil antena VHF 1/4 ONDA
It's about making us an antenita type GP ground plane for the VHF band
Systeme d'antennes verticales en phase
Two vertical antennas lambda / 4 and placed at a distance equal to lambda / 2 are fed simultaneously by the same signal in emission. The signal is applied with a phase shift or 180 degrees
The 5 band pipe vertical
A simple, cheap and easy to build 26 feet long vertical antenna that works DX on 10 20 meters including warc bands
Un commutatore per sloper
I built this switch to switch some sloper for low bands without increasing the number of cossial cable descents
Short loaded vertical antenna portable
Diameter: 62 mm coil height 83 mm / Full height: 121 mm after cutting off a part I didn't need Coil turns: 28
184
It's about making us an antenita type GP ground plane for the VHF band
Two vertical antennas lambda / 4 and placed at a distance equal to lambda / 2 are fed simultaneously by the same signal in emission. The signal is applied with a phase shift or 180 degrees
A simple, cheap and easy to build 26 feet long vertical antenna that works DX on 10 20 meters including warc bands
I built this switch to switch some sloper for low bands without increasing the number of cossial cable descents
Diameter: 62 mm coil height 83 mm / Full height: 121 mm after cutting off a part I didn't need Coil turns: 28
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