Ok, this is just a concept, I just wanted to show how the Arduino could be useful for radio amateurs. The SWR meter (in the back) is hooked up to the Arduino, also a servo is attached which drives a capacitor. This capacitor forms a simple L-tuner, together with an inductor which you can’t see on this video. The Arduino does a full sweep on the capacitor while measuring the SWR. It stores the position with the lowest SWR and after the sweep it rotates the capacitor to that position. Mind the SWR meter (right needle) while the capacitor is rotating! Details, pictures, schema and code: ernest.utreg.net
www.hamradiofinds.com Here is a video showing the JW MIller AT-2500 HF Ham Radio Automatic Antenna Tuner..This tuner covers 80-10 meters & will handle 2Kw+ of power..It has one input & 5 outputs, including one long wire connection..It runs on 110VAC, but can be switched to run on 220VAC..The tank circuit is well constucted using heavy duty parts..This would make a great addition to any HF ham radio shack..Thanks for watching..73s, Mel, WA5UTK
Video Rating: 4 / 5
Great video. Just getting back into amateur radios after a few decades. Your discription was clear and concise. Great to see the inside and discription of an auto tuner. Learned a lot.
Hi Mel, Thanks for the video overview of this unit. I’ve recently had the good fortune of having one of these gifted to me x my father and I’m looking forward to giving it a try soon. 73 de W6JGB
I am from China, HAM BH7PVE, by e-mail with a PA3HCM want his help, PA3HCM soon provide the experimental procedure to me, he is very friendly and warm. For which I am very grateful.
After my test program is very good, very accurate tuning, use ardiuno to control the antenna is a great invention, want to promote
What is the servo model?
Thank you and 73 de Alain WW3WW
It’s a cheap basic servo, in my case a Modelcraft RS-2. Any 5 or 6 volt servo should do the job.