@disser Well done. If you can hear voices, you'll be able to decode and display (when the send them) #sstv (slow-scan TV) pictures from the ISS. For more details, check out: https://www.ariss.org/upcoming-sstv-events.html

Here's a few seconds of a pass I captured using an Anytone 878 and an outside "Flowerpot" antenna from www.VK2ZOI.com. The radio's not even connected to the computer - just close to the computer's microphone. I used QSSTV on Linux but there's MMSSTV for Windows. #amateurradio #hamradio

@Quantensalat

#sstv let us know the frequency and modes after launch and will try and pick it up

@halcy I guess that to an extend stuff like analog #NTSC or even #HiVision + #MUSE is not just trivial to modulate but also that basically any space-faring civilization will have a decently performant #SDR setup.

• I mean, #Hamradio operators do #SSTV for decades so the only reason they don't do #TV at fluent frame rates is lack of #spectrum to do so.

But in space, that problem isn't existing so quasi-optical links in like 24GHz & 60GHz bands are trivial to setup.

• Compared to the challenges of superluminal or spacetime warping travel, autonegotiation and frequency selection for bidirectional audio & video feed [if not compression] is an absolutely trivial problem that I'm confident elementary schoolkids in a "Star-Trek" - esque universe doodle in their free time like some folks nowadays do breadboard.

Also a lot of #encoding / #decoding & #compression schemes can be broken down into mathematical formulas and that is a universal languague to the point that one could assume said communications to be like a sci-fi variant of modem handshake within a second as computational power and speeds should be abundant anyway...

https://en.wikipedia.org/wiki/Hi-Vision
https://en.wikipedia.org/wiki/Multiple_Sub-Nyquist_Sampling_Encoding
https://en.wikipedia.org/wiki/Slow-scan_television