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20 kwi 2022 · A simple multi-Z antenna tuner for QRP. Easy to tune low-Z and high-Z antennas. This is just an experiment while testing it with my 40m EFHW antenna.73, YO6D...
A quick look at a homebrew ATU with LED swr indicator.
25 mar 2017 · Short video describing my homebrew L antenna tuner for QRP operation. In the schematic, the inductor's units should read uH.https://www.facebook.com/AC2RJ/.
18 kwi 2020 · A well-designed Z-match tuner has a high Q and is more efficient (less lossy) than other types of tuners. The fixed inductor simplifies construction (no taps or rollers needed). Using a toroid inductor and some small poly-film variable capacitors, the Z-match can be built into a very compact package.
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. Please Note: In the last version of my modified FRI-Match (diagram above), I replaced the 470 pf variable capacitors with 500 pf.
Basic multi-z antenna tuner for QRP. Easy to tune low-z and high-z antennas. This is just an experiment while testing it with my 40m EFHW antenna.
16 sty 2021 · The second video below shows the final implementation of the tuner; as a fan of QRP, or low-power operation, [Charlie] favors simple, lightweight homebrew gear that can be easily taken into...
