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20 meter wire j pole
1/4 matching stub 450 ohm ladder line,coaxial choke balun deed assembly
post 23 Feb 2024
Antenna Vertical Links →
Screwdriver antenna basic
A Screwdriver is a motorized antenna that extends and retracts, shorting a coil, which adjusts the length of the antenna as it is tuned
BigIR assembly
Below includes a few pictures of my assembly process along with some updated notes and area that are going to be stumbling blocks for anyone trying to put one together
BigIR MK III Vertical with 80 meter coil
The antenna does well on all bands including 60 meters. The SWR is low enough that I don't need to use the antenna tuner
Butternut HF2V 40/80 Meter Vertical
I bought this antenna used, but in new condition, at the moment I'm using 40 radials 11 meters long
184
A Screwdriver is a motorized antenna that extends and retracts, shorting a coil, which adjusts the length of the antenna as it is tuned
Below includes a few pictures of my assembly process along with some updated notes and area that are going to be stumbling blocks for anyone trying to put one together
The antenna does well on all bands including 60 meters. The SWR is low enough that I don't need to use the antenna tuner
I bought this antenna used, but in new condition, at the moment I'm using 40 radials 11 meters long
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