Keyboard Shortcuts
ctrl + shift + ? :
Show all keyboard shortcuts
ctrl + g :
Navigate to a group
ctrl + shift + f :
Find
ctrl + / :
Quick actions
esc to dismiss
Likes
- ATU100
- Messages
Search
Re: Chinese clones - not working as expected
#ATU-10
I suspect that all of the ATU-10's being sold on AliExpress and eBay come from the same manufacturing lot. The pictures on every ad that I've seen look exactly the same. The particular seller that?I?purchased from is no longer selling them.
I have not asked for a refund yet. I plan to inspect the circuit board this weekend and see if I can figure out what the problem is. I popped the top yesterday and it looks well built inside, so I suspect it might just be a bad solder joint. We'll see. 73, Scott AK5SD |
Re: Chinese clones - not working as expected
#ATU-10
It would not be bad in such cases to be reported here on the group who is the seller who has defective products; this way who wants to buy .. avoid x and y (whether it's on aliexpress, ebay, etc)? --- Cu ganduri bune, Marius - yo6rk 73!
|
Re: 0805 parts_ATU-10 PCB
#ATU-10
toggle quoted message
Show quoted text
Hi All, |
Re: Chinese clones - not working as expected
#ATU-10
I just received my ATU-10 close from AliExpress and have the same issue. The tuner completes a tuning cycle but the final SWR is over 5 into a matched load. Its that the seller I purchased mine from is no longer selling it. I'll report back if/when I determine what the problem is and fix it.
73, Scott AK5SD |
0805 parts_ATU-10 PCB
#ATU-10
Hi All,
I made a pcb version that swaps all the 0603 sized parts on the ATU-10 PCB to 0805's.?? Maybe still not 'big' enough to satisfy those hesitant about smd work. I received the PCB's a few days ago and have not loaded one yet, but the Sch is identical to my previous versions. Details below, what is different about the V1.31 ATU-10 PCB by vk3pe, over the V1.2 that I released gerbers for.
¡¤???????? Glennvk3pe |
Re: Programming & compiling from github source code
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, and they are based upon Version 3.2?? ? ?I will need help from others to try running it on their hardware.? There are a number of Display variants, and I only have one version here. ? ?I'm still working to make it more readable (it compiles, links, and runs on the MPLAB simulator fine), but should have a version to put up next week.?? ? ?My goal is to have zero changes in functionality compared to version 3.2, but the code will look very different.? The functions are all the same, but I've run it through a 'c beautifier', and renamed many of the variables, and added constants. |
Re: Programming & compiling from github source code
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 the header files to provide test classes , although plain C is challenging to make it OOP.? I have not found a way to include I2C header yet.? Perhaps David WA1RCT can share his code and I can push it into the git repository? One thought I had as well is to provide ready to use hex files for each display type etc. Using the Netbeans builder that would be easy. This way nobody has to hack around in the eeprom.? Best regards Onno |
Re: Programming & compiling from github source code
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 hardware.? I am now trying to make it more readable and 'clean'.? ?I have one set of hardware here to try it on, but will need volunteers to test out all the features.? I have shrunk the code slightly with some of the cleanup.? Within a week I should have it in pretty readable shape.? Also, I have put the compiler-specific changes within #ifdef, so that it should still build find under MikroC. Dave WA1RCT |
Re: Programming & compiling from github source code
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: 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 covers a simple relay test.? One thing I am still figuring out is how the Netbeans IDE is working (or not) with settings and how to synchronize this with github.? Right now I broke the settings and need to recover it.? --
ana |
Re: Programming & compiling from github source code
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 covers a simple relay test.? One thing I am still figuring out is how the Netbeans IDE is working (or not) with settings and how to synchronize this with github.? Right now I broke the settings and need to recover it.?
I am still struggling with how to approach the code. On one hand I would like to preserve the original code but I honestly don't know how to do that correctly. Best regards Onno pa1ap |
Re: SWR at Radio
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@...>: 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 case: the seller did indeed send a faulty unit. |
Re: SWR at Radio
¿ªÔÆÌåÓýyou 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 cannot think of a reason why this should be like this.¡±You obviously have not looked at the circuit diagram freely available on the internet. The reason you are getting a short across the RF INPUT - IS BECAUSE THERE IS A DC PATH TO EARTH FROM THE CENTRE PIN OF THE RF IN SOCKET. Note :- I said DC path. At RF frequencies it is not a short circuit. Again, if you look at the circuit diagram you will see that there is a DC path to earth between the RF input and output sockets via L1,L2,L3,L4,L5 and T1. They are not directly connected but BOTH have a DC path to earth. You cannot think of a reason why this is so because you cannot read a?circuit diagram.
|
Re: SWR at Radio
¿ªÔÆÌåÓýLook 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 seller for sending faulty unit
|
Re: SWR at Radio
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.?? On Mon, Nov 29, 2021 at 9:23 PM Onno PA1AP <pa1ap68@...> wrote:
|
Re: SWR at Radio
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 frequencies. Second, measure with a multimeter or scope the voltage after the diodes while applying power and the unit in bypass mode. And with the tuner disconnected from DC power, what resistance are you measuring at the point after the diodes? I suspect something wrong with the resistor values or connectivity.?
|
to navigate to use esc to dismiss