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10-80m-doublet-antenna
is at about 57 feet 17.4m and the feeder is about 60ft 18.3m long almost vertical but comes into the house about 3 ft above ground level
post 25 Apr 2024
Antenna Feed Lines Links →
Antenna Cable Loss and SWR
To measure the cable loss, you should disconnect the other end of the cable from the antenna
Balanced feed with coaxial line
A previous model, fed with 300-ohm Twin-Lead and a T-match, had just beentaken down due to the unsatisfactory performance
Parallel Wire Impedance Calculator
This tool is designed to calculate the inductance of two parallel wires
Coaxial line RF choke
Understanding Common Mode and Differential Mode Currents on Transmission Lines
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To measure the cable loss, you should disconnect the other end of the cable from the antenna
A previous model, fed with 300-ohm Twin-Lead and a T-match, had just beentaken down due to the unsatisfactory performance
This tool is designed to calculate the inductance of two parallel wires
Understanding Common Mode and Differential Mode Currents on Transmission Lines
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