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End Fed Half Wave Antenna Tuner
The main advantage of the EFHWA is that it does not have any feedline. No feedline means no feedline loss
post 05 Dec 2024
Antenna Transmatch tuner Links →
A simple 10W QRP Z-match antenna tuner 80 - 6 meters
I have been trying to locate an Amidon T-130-2 toroid to build this circuit. The toroid I was looking for is red coloured, but unable to find one; I found a smaller red toroid that works perfectly
A single-coil Z-Match type
One of my first structures was with two plastic varicaps. Types that were in portable AM radios. Although intended for QRP, they often proved suitable for even 100 W if the impedance to be adjusted was not too high >
A Homebrew Antenna Tuner
I decided to build a homebrew antenna tuner because I needed a passive pre-selector network to match an experimental end-fed wire antenna to my QS1R SDR receiver
Accordatore d' antenna a copertura continua
Un accordatore a copertura continua. Rispetto alla bobina classica con le prese commutabili il vantaggio di una induttanza variabile roller consiste nel fatto che l' accordo e' piu' preciso
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I have been trying to locate an Amidon T-130-2 toroid to build this circuit. The toroid I was looking for is red coloured, but unable to find one; I found a smaller red toroid that works perfectly
One of my first structures was with two plastic varicaps. Types that were in portable AM radios. Although intended for QRP, they often proved suitable for even 100 W if the impedance to be adjusted was not too high
I decided to build a homebrew antenna tuner because I needed a passive pre-selector network to match an experimental end-fed wire antenna to my QS1R SDR receiver
Un accordatore a copertura continua. Rispetto alla bobina classica con le prese commutabili il vantaggio di una induttanza variabile roller consiste nel fatto che l' accordo e' piu' preciso
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