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Antenna Levy
To optimize the system, you should put the tuner right at the end of the lineup
post 29 May 2024
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Windom Antenna
The peculiar aspect of the I7SWX windom is the balun,wound on a simple ferrite rod,instead of the commonly used toroid
Morgain per i 40 e gli 80 metri
This antenna has in its main characteristic, the fact that with only 20 mtof space occupied it works the 80 meters
The Homebrew Buddipole 17m/15m
I made the Buddistick first, then later made the Buddipole. Both are easy to make and work well
Doublet Antenna
The ATU design gives a reasonable 'Q' factor so you will have to tune it regularly. Eurotherm PID controllers and a stepper-motor can make a good auto-ATU
The Dipole antenna
The DIPOLE antenna, here some reference data, pointers and ideas that may help you
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The peculiar aspect of the I7SWX windom is the balun,wound on a simple ferrite rod,instead of the commonly used toroid
This antenna has in its main characteristic, the fact that with only 20 mtof space occupied it works the 80 meters
I made the Buddistick first, then later made the Buddipole. Both are easy to make and work well
The ATU design gives a reasonable 'Q' factor so you will have to tune it regularly. Eurotherm PID controllers and a stepper-motor can make a good auto-ATU
The DIPOLE antenna, here some reference data, pointers and ideas that may help you
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