Looking for a fix for the x6100.? The radio operates just fine on external power.? However, the radio will not turn on with the internal battery though it is full.? I rarely use the radio so not sure what the issue is.

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Any suggestions or recommendations welcome.

There's really no need to copy data around if the SD card was previously already used for R1CBU, since the data is already in the third partition; it is just not mounted because the master boot record (MBR) doesn't have the entry for the third partition (yet), but this 'parted' command takes already care of it:

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On the other hand, if you are talking about a brand new SD card (i.e. the first time you install R1CBU on it), and you already have a previous SD card with R1CBU, and you want to copy the configuration over, then you would flash the new SD card, put it in the radio once, let the GUI come up, power it off without making any changes, pull the SD card out, and then copy from your computer all the files in the DATA partition of the old card to the DATA partition of the new card (making sure you copy them in the right direction!), and then you should be good.

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73,

Franco K4VZ

What if you copied files in Data partition, wrote image, then pasted the original data back into the Data partition on newly flashed SD card?

There are no configuration for this (yet). Perhaps, it will be added in one of the next version. Or someone will find a way to fix it in a BASE firmware.

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Georgy // R2RFE

Hello Georgy,

could you please be so kind to explain, what I settings I should use?
All of the settings for the waterfall are ‘a book with seven seals’ for me anyway.?
sorry ??

73 de Rico DG5BQ

I described this issue on this topic: /g/xiegu-x6100/topic/wrong_signals_on_the_bound_of/108431112

It can be "fixed" with displaying 80 kHz (instead of 100 kHz). Also, perhaps it might be fixed by updating ADC configuration somewhere within BASE firmware.

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Georgy // R2RFE

Hi Rico,

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I am afraid many of us have this problem (including me), the weird false signals are "birdies" - caused by hardware design issues.

So it cannot be fixed with a firmware change AFAIK,

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73,

Janos ON4JBS

Georgy,

thank you very much for all the work you put into this project. I'm so happy with my little radio no.

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However I do have one issue that's annoying me:

On the waterfall over spectrum rather it shows signals which move in the opposite direction when I turn the frequency dial.

Does anyone else have this problem?

Is there a way to fix that?

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All the best to you and your families for 2025

73 de Rico, DG5BQ

Since everyone here is just talking about charging the battery... I have another very interesting issue.

First I have to admit that I didn't really understand the charging process when I got my x6100 many moons ago. But from the first day on charging didn't start by just connecting it to external power. My procedure is: switching on the radio, connect the charger and switch the radio on again. A few seconds after switching off the radio indicates charging by a flashing green LED and the charging works normally.

It doesn't even matter whether I use the original FW (any number) or the alternative FW.

Any ideas, how I could fix that?

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All the best to all of you and your families for 2025?

from Rico, DG5BQ

That would work too - I hadn't thought of it.

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What I did instead was to add a few lines to S01create_data script and use 'blkid' to see if there is a preexisting 'DATA' partition; if there's one I just mount it ().

This way I can just run something like:

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dd if=sdcard.img of=/dev/sdX bs=8M

and even if it overrides the MBR, S01create_data is still able to find the data partition.

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This is why I hope this approach would also work for those using other applications writing to the SD card, as long as they don't overwrite the content of the data partition.

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Franco

Franco, regarding dd I assume You mean: dd skip=1 seek=1 with default bs=512 which preserves first SD sector containig partition table?

Thanks Markus for the kind words and for confirming that now FT8 TX works.

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I just created an SD card image for others who want to try it without having to build everything from scratch.

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The image is available here:

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A couple of notes:

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Please give it a try and let me know how it goes - I would consider this still a beta, but it won't brick your radio.

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Again, many thanks to Oleg, Georgy, and Rui for their outstanding work on this custom firmware!

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73,

Franco K4VZ

Georgy,

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I did not mean to hijack your message thread.? I just wanted to measure the new firmware you provided but ran into a problem and then spun out of control.

I will stop posting here and will start a new thread if I discover anything about the AM modulation that I am seeing with my radio.

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But I did want to share the measurement I made today because it may help someone use other microphones to make the radio sound better.? Since that is why you released the firmware, I figure it is OK.

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I measured the microphone connector input impedance today.? Red is measured and blue is a simple model that matches well with the measurement

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This schematic has a very similar impedance to the microphone input.? But be warned, the microphone signal pin has a bias of 6.2 V, so a bit of caution and thought is required before connecting anything.? I did not model any potential bias circuits, and I have no idea what the input circuit actually looks like.

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I would think a microphone output impedance less than 600 ohms would work well.? My testing has been with a 50 ohm source impedance and should not be impacted by the radio input impedance.

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Rainer,

I can potentially use white noise; my function generator is also an ARB.? I will have to rewrite my test. As of now it is using swept sin.

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But you said "ALC effects"!? That is something I completely overlooked.? I am embarrassed to say don't even know how my radio is set up in terms of ALC.? I will check it out tomorrow.

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I am using a function generator connected to the mic input, and the x6100 is connected to a Vector Signal Analyzer through a 40 dB 50W attenuator.

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Thanks for the link to VA, I will check it out.? I like the picture on the homepage.

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Cheers,

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Dan W6DSW

Dan,

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can you test with white noise? This should avoid any suspected resonance or ALC effects,

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I plan to test the following when I get home from vacation:

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PC with VA software -> USB -> X6100 internal soundcard -> 40dB power attenuator -> spectrum analyzer

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VA: freeware, with interesting extras like RLC measurement option, based on a Ph.D. thesis at an Italian university.

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Greetings,

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Rainer DG1SMD

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After some investigation I have found that there is a time varying gain of some sort from the microphone to the modulation output.? It is worse at lower frequencies but can be seen at all frequencies.

This plot shows a 165Hz tone in white and a 170Hz tone behind in red.

Zoom in on 170Hz


Here the envelope was extracted from the above data and plotted as dB from the mean signal amplitude.? Additionally, there are measurements of 250 Hz and 2.5 kHz.? You can see that the period of the modulation is not the same for each tone frequency I tested.? I do not know if it is related to the audio frequency or if the modulation frequency just drifts around.? In any case, my frequency response test just happens to be grabbing points off of this envelope and it was displayed as ripple vs frequency when in fact it is ripple vs time.?


I will play around with various mic gains and input levels to see if I can learn anything.? Also, the hand mic has a 220k resistor between the mic input and the base of a NPN transistor that acts as a switch for the power inside the hand mic.? I will try loading the mic line with a resistor to see if it somehow impacts the mic input.

Hmm... Just thinking, I should be able to see ~5Hz AM sidebands on these ~170Hz audio tones.? I hope it is not some sort of power supply stability issue in my radio.

Franco, i have rebuild the Kernel and was able to make a? FT8 QSO.

So i think FT8 works now.

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Again, thanks for your and all the others Work to make the x6100 better. ?

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73 de Markus, DB2ZW

Ah thanks I got you done and working?

73

KQ4WGS