It's all about the Software

I remember lines in the file that the uninitiated dongles read that refer to an RX-999. But that's all I remember about it.
{^_^}

I flagged Simon so he can get on this.
{^_^}

SDRC does not have much if any real provisions for automation. And I don't believe Simon has time or inclination to change that.
{o.o}

I would start by making a guess and trying the rtl433 project on GitHub. There is a small chance that is among the very large number of devices that can be read and decoded. I'd also check Zigbie projects on GitHub. With that command you are likely receiving approximately 51200/2/250000 seconds ...

It might be a bad cable or connector. Also make sure the cable is husky enough to transmit the required power to the RX888. A skinny cable might not work if it is longer than a meter or two.

I reread the thread and noticed something that I find interesting. Why did you download the driver from the ...

This group might not be much help for you. It is related to Simon's "SDR-Radio (v3)" software. You seem to be fussing with the rtl433 tool. Merbanan's rtl433 github site would be where I would start in my quest for decoding help from people using the SW. It looks like the "Discussions" tab is still ...

Very definitely RX888's want their own USB3 controller all by itself. Images of the settings for the RX888 driver for both SDRC and HDSDR might be interesting to see. What else is running concurrently?

If it used to work, somewhere you got a setting wrong or a connection wrong. The video problem ...

There are a LOT if sub-par knockoffs out there. I think I got one. On both HDSDR and SDRConsole the audio stutters due to sampling dropouts unless I drop the sample rate down from the theoretical maximum.
{^_^}

As summarized it occurs to me that if you generate different definitions for different firmware the definition might have an offset in one or more of them. I am betting this is not in the least likely; but, I've learned to listen when my brain coughs up silly hairballs. In the definition converter ...

Alex, you seem to have accepted the wisdom that the easier you make it for the developer to add your product to another existing product the more likely it will be added. And that means more sales. It does not escape me that this makes an excellent tool for scanning for UAV RF control and video ...