Thread

1. mallets · 1790879919 · focus · HN ↗

   So many $1 wireless ICs have a powerful "SDR", but will never be documented due to certification/compiliance/export-control reasons. The projects listed here rightly limited the scope to RX-only but Espressif might be forced to "patch" this away if arbitrary TX too is possible (or starts making headlines). Hope it doesn't come to that, more cheap options for RF-to-bits is always welcome.

   On a technical note, not much I can find about the signal quality. Phase noise, images, DC Offset, etc. Have to get my hands on one, ESP32-S31 seems promising.

   1. ErroneousBosh · 1790880388 · focus · HN ↗

      > The projects listed here rightly limited the scope to RX-only but Espressif might be forced to "patch" this away if arbitrary TX too is possible

      Why would they? It's perfectly legal to operate radio transmitters on any frequency you like, if you hold a suitable licence.

      1. amelius · 1790943197 · focus · HN ↗

         Think of this scenario. What if there is a botnet that these ESP32 modules become a part of, and they all start transmitting garbage, simultaneously ...

         (This is why you will never truly own your smartphone, even though you paid for every chip inside it)

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