Hits
Antenna tuner T 3,5 a 30 MHz
T-shaped and uses a mid-range choke which allows tuning on all HF bands from 80m to 10m
post 12 Sep 2024
Antenna Transmatch tuner Links →
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 Tiny Z-match Tuner portable
A compact Z-match tuner for usage for in operation portable
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
A simple 10w qrp z-match 80-10m
Easily connect both symmetrical and unbalanced antennas from 80 to 10 m
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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 compact Z-match tuner for usage for in operation portable
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
Easily connect both symmetrical and unbalanced antennas from 80 to 10 m
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