Hits
End fed half wave antenna
A single wire,cut at 1\2 wavelength of the desired frequency,fed at one end,therefore without center isolators and coax cable to make it heavy and bulky
post 30 Apr 2024
Antenna End Fed Links →
Multi band end-fed
The antenna is very effective / efficient, it can be mounted as vertical, horizontal or as a sloper, it is low on QRM / QRN, it does not cause any RFI in the cabin, it is very practical to assemble
Realizzazione della EFHWA
E' un semplice L Tuner che adatta l'impedenza dai 50 ohm del RTX ai 2450 dell' End Feed Half Wave Antenna
Remote loading unit for a 160 end fed antenna
I have made three of these remote loading units, two currently in use. . The supply to the motor is via the coax feeder
The end fed wire antenna
A simple matching unit is needed to couple the wire to the rig and a counterpoise is required for some bands
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The antenna is very effective / efficient, it can be mounted as vertical, horizontal or as a sloper, it is low on QRM / QRN, it does not cause any RFI in the cabin, it is very practical to assemble
E' un semplice L Tuner che adatta l'impedenza dai 50 ohm del RTX ai 2450 dell' End Feed Half Wave Antenna
I have made three of these remote loading units, two currently in use. . The supply to the motor is via the coax feeder
A simple matching unit is needed to couple the wire to the rig and a counterpoise is required for some bands
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