These ATU-100-type antenna tuners are Chinese clones and adaptations of the N7DCC design. I've had three. One was a full kit, which I abandoned due to missing parts and the need to solder SMD resistors and capacitors.

The easy DIY 5x5 elements 100 Watt automatic antenna tuner N7DDC ATU-100 extended board The flexible tunable firmware for ATU from 5x5 to 7x7 elements, up to 1500 Watt measured power

ATU-100 N7DDC automatic antenna tuner design and build details, tests, options, and matching capacity explained. Chapters below:00:00 - Summary00:53 - Intro0...

https://github.com/Dfinitski/N7DDC-ATU-100-mini-and-extended-boards/tree/master/ATU_100_EXT_board The schematic in editor: https://easyeda.com/rolin791/atu-100-7x7 Purpose The device is intended for use as an element of amateur radio equipment, as part of amplifiers or transceivers, or as a separate device that …

The ATU-100 Antenna Tuner offers several optional functions, including starting at 1-5W, screen auto-extinguish after 10 seconds or constant light, and switching between full automatic and manual modes.

There is an excellent video guide enclosed on the page above for converting the ATU-100 to QRP operation by 1. Altering firmware settings slightly by using an inexpensive Pickit 3 PIC programmer.

2024年12月26日 · N7DDC designed the popular "ATU-100" 100 watt antenna tuning unit (ATU) which is freely available as a kit or even in built up form, from vendors such as eBay, Aliexpress and others. I have built up a couple of these.

ATU-100 HF auto tuner Here is a quick review of my ATU-100 HF after I have used it for a while. I recently purchased an ATU-100 to replace my well love and used Z-11Pro tuner.