This seems to be the answer
Chinese version of Flightradar 24?
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The Variflight people are kind of implying they are better than Flightaware, go figure.
You all have to spend 15 minutes and read the page. Its funny.
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Variflight is growing! 87 airports now! I write this as sarcasm.
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“flight happiness index”? I want to know more about that 
My last 13 hour flight wasn’t that happy.
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At least it cannot be the page load happiness index.
Site is loading, but more like back in good old modem times
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However I would like to find the RTL card they are using in their feeder.
Original article in russian https://habr.com/ru/post/423989/
Translation to english https://sudonull.com/posts/9124-VariFlight-ADS-B-Flightradar-in-Chinese
An attempt to look under the screen was a success from the second approach. The lid broke off and turned out … … as it turned out everything was in vain - the marking with chips was carefully cut down.
Looking ahead, I will say that it turned out to be an almost ordinary RTLSDR receiver - RTL2832U DVB-T (0bda: 2838)
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Looking at the chip I would say so. I assume they removed the markings because of license agreements. I wonder who builds the board? I bet a long but successful seach will turn up who builds the board.
It looks like an ordinary Chinese unnamed PCB Assembly. Small batch production of circuit boards.
P.S. New version
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It would be interesting to find the radio board and experiment with it.
I think its characteristics are worse than RTL-SDR Blog R820T2 RTL2832U 1PPM TCXO SMA Dongle
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