Notices by Henning Paul DC4HP (hennichodernich@radiosocial.de)

@whitequark @SpaceLifeForm I run across the discussion "is sarcasm ableist?" approximately once a year and it never leads to anything useful.

@whitequark @poppyhaze So something we call a second source... 😬

@yogthos I don't know if this disqualifies her for the job. She never met him, not even her father ever met him.
You think maybe there's something evil in her genes?

@yogthos Phew, if you know how many people fled from the GDR before the wall was built (and even afterwards, many paying with their lives)...

@manawyrm @whitequark Indeed, and fortunately the Glasgow supports this by putting GND on even pins 4-18.

@whitequark yes. Yes, yes, yes.
Use IDC cables with every second wire grounded and 22 to 33 ohms series resistors on the TX side.

@whitequark An applet for reading and writing serial NAND flash? It's not very rewarding, but might come in handy.

@whitequark I'm honestly deeply impressed.

@whitequark @karotte Oh, okay, so I was on the wrong track.

@karotte @whitequark The AD9361S seems to be heavily NDA'ed. The AD9361 datasheet is publicly available.

@whitequark Ah, ok, thanks for the clarification. Do they have somehow coupled the LOs in order to get them coherent? Because usually that's the tricky part. AD's "standalone" modulators and demodulators have dedicated LO inputs and outputs so you can daisy-chain them. I always wanted to build a MIMO SDR with them, too.

@whitequark But doesn't the AD9361S still only have 2 Rx and 2 Tx chains? It does have twice as many outputs and thrice as many inputs, but those can't be used simultaneously, right?

@whitequark I can tell from the pixels and the fact that I've seen quite lot of Shaheds in my life[1].

[1] On Twitter. From Ukrainian accounts.

@whitequark Still reversing the Shahed? 😉

WIP

@ChuckMcManis @SteveBellovin I would rather say, they're completing the work Sun started with Solaris. systemd isn't a clone of Windows' services, systemd is a clone of Solaris' svcs.

@BrucePerens_K6BP The actual demodulation code is the same, since it's running on the processor, but e.g. the spectrum calculation takes place in the FPGA.
A lot of interaction with the programmable logic is hidden in the kernel driver which is controlled via ioctls.
The forked KiwiSDR code can be found here https://github.com/RaspSDR/server/tree/master, but the source code of the kernel module unfortunately not.

@BrucePerens_K6BP The Web-888 uses a totally different FPGA design and Linux kernel interface compared to the KiwiSDR.

@BrucePerens_K6BP That's because the KiwiSDR uses a standalone FPGA that communicates with the SBC over SPI, while the Web-888 uses a Zynq-7000 SoX and shared memory for interaction between PL and PS parts.

@BrucePerens_K6BP Unfortunately not open. They neither published the FPGA block design nor the source code for their kernel module. You don't even get a schematic.