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Is the grass really so green on the Auto side of ATU's? 500 & KW ATU's

Naysayer

Well-Known Member
Mar 6, 2020
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New York
Assembled: $255. https://newdiytech.com/products/atu-atu-1000w-antenna-tuner

Kit form: $150 https://newdiytech.com/products/atu...-antenna-tuner-7x7-atu-1000w-by-n7ddc-diy-kit
Based on N7DDC Auto ATU board
I've never used an Auto ATU but the price has fallen so it hard to resist..

Edit:
video reports counterfeit boards and delays from originating country Ukraine.

Think I found my next project if I can get original.

2nd Edit: https://pd5dj.nl/?p=3012 More recent thread about construction and operation problems. Seems like there are substantial issues still
 
Last edited:
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Lots of questions... The matching range or the total inductance / capacitance isn't mentioned. 1KW tuners are typically 1KW into a 3:1 load, and far less into a none resonant load. I went back to a manual ATR-30 tuner as it is far more robust than any auto tuner. There needs to be a true 5KW auto tuner so those of us running none resonant antennas can load them with legal limit +++. All that said, this kit is cheap enough that I will likely get it and see what power level the smoke comes out.

Thanks for posting this!
 

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