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I don't believe that the HackRF cluster is required for receiving the beacons. After the 11 GHz signal is down converted by the LNB, an RTLSDR should be fine for reception. happysat77 on Reddit used a PlutoSDR, but an RTLSDR should be ok, since the down converted signal is around 1600 MHz. The bandwidth of the beacon is only 1 kHz or so.

https://www.reddit.com/r/RTLSDR/comments/qtofau/comment/hkq2...

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You don't need a cluster of HackRFs to see a single beacon. But the combination of several HackRFs does give you larger instantaneous bandwidth and the ability to track an individual beacon over a wider range of Doppler shifts and hence for a longer time / part part of it's orbit. And the ability to see a whole bunch of beacons at once.

Wow that's some snazzy dish hardware Oleg's using there. I guess he's planning on more than beacon-tracing. 11 GHz is about a 1" wavelength ... dish size??

https://twitter.com/olegkutkov/status/1459552936556732426

https://twitter.com/olegkutkov/status/1422920308302958600

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