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Hi David? ?G8PTN

All Working properly now.? Although the power reading is definitely showing a lower power level than my other power meters.

Any suggestions.? Apart from that all appears to be working fine.

73s David? ?G4RVH

hi David G4RVH,

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Congrats for having now a fully functionable ATU... built from scratch!?

One, not very important thing: your display is shifted 1 point up! You can correct this by correcting the content of cell 7 with plus 1, i.e. if you have zero (0) than you should put one (1)...

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73, Immo

Hi Immo

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Thank you very for your kind words.? It has taken longer than expected , 2 years nearly as don't get alot of time like I used to but not a problem at because we are enjoying life.? To be quite honest I am not really that bothered if the tuner shows a different power reading so long as its tuning the aerial to resonance.?

That's all I need.

Great to hear from you again.? All ok the the 1 point up business as well.

If I was to use this tuner with my 160 foot doublet I would put my 4:1 balun on the Output of my two Berrillium Copper posts and feed it that way.

73s? David? ?G4RVH

Is it possible to alter a Cell value to Calibrate power levels.

73s? David? ?G4RVH

Hi David,
Excellent news, well done.
There is no easy way to make a correction with the current ATU-100 firmware.
There is the configuration for the Stockton bridge turns ratio, but that would be a very course correction.
The firmware has constants to correct for the non-linearity of the diodes, but they are fixed in the code.
Anyway, hopefully it is good enough for your needs and you can put it to some use.
73, Dave

Hi David G8PTN

I've just thanked David N7DCC for his marvelous Project and of course your valuable help as well as a couple of other radiohams.

It's under a different heading , you will see it there.

I tested it out today , absolutely marvelous piece of equipment.? You will read about it in the other text.

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73s? David? ?G4RVH?