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Hi Bjorn, That looks to be the high-power version (atu-1000). I think what I'll do is put up my MPLAB version as a BRANCH (fork) off of David F's ATU-100 github sources.? I'll label them as MPLAB,

Hi Bjorn, Yes that is correct. I can provide access to co-develop / manage the code. Just share your github user and I will add it. Right now all the code provides is the MCC template and I have used

I guess it is this repo Onno means: https://github.com/pa1ap/atu-1000

Yes, please let us know where the repo is located. I have been working hard on the code.? It compiles and links (locally) just fine under MPLAB X.? I have run it on the simulator, but not yet on

Hi Onno, Could you please share the repo. I might have some ideas for the structure Kind regards, Antti oh5kb ke 1. jouluk. 2021 klo 11.45 Onno PA1AP (pa1ap68@...) kirjoitti: -- ana

I have created a github repository and started using the microchip cross compiler. I have first commit to github to share the code and happy that first step works. I can now compile the c code which

Hope the seller will support you well. To bad the unit isn't working. Best regards Onno Op di 30 nov. 2021 22:27 schreef David-W6DMW <dwest24@...>:

you say "There should be no continuity between the ANT Center and the shield and vice verse right? I have continuity every way I test between the input and output connectors. I'm asking because I

Well, I bought a fully assembled kit.? I wouldn't think that I would need to take the thing apart and redo their work to make it work.? If I had made the kit myself, I would blame myself.? In this

Look at the CIRCUIT DIAGRAM, there IS a DC short to earth on the RF input. You are chasing phantoms, there is nothing wrong with your ATU100. Try looking at the circuit diagram before you blame the

Thanks for the input, I've decided to send it back. If I had built it then I would be game for all the testing and such but I bought it built. I expected it to work.

If you connect a dummy load to output and swr meter to input and provide a test signal what does the swr meter show? This while the tuner is in bypass mode? The swr should be close to perfect on all

David I'm not sure what you mean by TRX ring? But if you look at the SWR bridge you will see that at all points around it, measuring with an ohmmeter will say there's a short to ground.?? Via the

Hi, John First of all check with a multimeter that all relays switched correctly. And check also carefully a soldering for PIC nodes and 2n7002.

Nope, the standard shipped hardware / software needs 5w min to tune. If you rewind the bridge and change the settings it will fund on about 1w. It won’t tune on .2w at all Tim M0CZP

Yea, Sorry. I read too fast. I thoughyt he said 0.2v and it was 0,2w.so it could be a problem with a pc board trace for sure. John

The bridge does not change when in bypass mode. It's always inline. The firmware does read the voltages from the bridge independent of tuner mode / setting. So indeed, when in bypass you should see

Hi Thanks to you all for your input on this problem, I think the general consensus is the voltages arriving at the PIC inputs from the bridge are too low for some reason. I'll rebuild the bridge

John He quotes 1v out of the SWR diode detector but nothing at the PIC. glenn

Steve If you trace through the schematic you will see the forward and reverse voltages from the SWR diodes are fed to the PIC via a voltage divider using 68k and 34k resistors..