Hits
VHF/UHF/HF X-Beam Antenna
The x-beam was originally intended as an HF mono-band beam. I used the formulas to build it for 6m
post 03 Sep 2024
Antenna 6 meter Links →
Antenna boomless tribanda per i 50/144/440 mhz
Questa realizzazione occupa poco spazio, e' leggera, non necessita del rotore
Chris Gare's 50MHz Power SplittersThe use of power splitters and combiners is widespread in amateur radio but the design of these circuits is often considered to be a 'black art
COAX antenna projects 2 and 6 meter
Uses formula for calculating the coax lengths 984 x .66/your frequency/4= 1/2 of the driven element, but I did not leave the 20% longer sections as I was not going to use insulators
102
Questa realizzazione occupa poco spazio, e' leggera, non necessita del rotore
Uses formula for calculating the coax lengths 984 x .66/your frequency/4= 1/2 of the driven element, but I did not leave the 20% longer sections as I was not going to use insulators
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