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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.
The kit can be through the T network resonant antenna, to make the radio work normally. Change SWR, corrections due to external reasons not tuned antenna. Can be used as a bandpass filter, Reduce the harmonic in the transmitter, to reduce out of band cross modulation and interference when receiving.
BUILD AN HF ANTENNA TUNER MAKE A HOMEBREW HF-VHF ANTENNA TUNER (It really isn't all that difficult.) This page details several T-match tuners. By comparing them, you should be able to construct a tuner to your own particular requirements.
18 kwi 2020 · Antenna tuners (more accurately referred to as “transmatches”) make great homebrew projects; they are reasonably simple to build and, when finished, provide a useful piece of equipment. Every shack should have (at least) one.
Using some old components left over from prior projects, Jim W6LG builds a manual antenna.The Patreon Link: patreon.com/JimW6LG
The QRP Manual Tuner appears to be the combination a few pieces of work, some that are possible to locate on the Internet. SWR Indicator Circuit - Dan Tayloe N7VE LED SWR indicator
Automatic antenna tuner using an Arduino by PA3HCM. The Arduino board is a fantastic tool for rapid prototyping, and can help radio amateurs in lots of homebrew projects. I wanted to demonstrate that it is very easy to build an automatic antenna tuner with the Arduino. http://www.pa3hcm.nl/?p=336.
