Here’s how you build your own Stingray using off the shelf hardware. [Simone] has been playing around with a brand new BladeRF x40, a USB 3.0 software defined radio that operates in full duplex.

Amateur radio is the only hobby that offers ... a very small group of die-hards who actually design, build from scratch, and operate their own SSB transceivers. I am one of those die-hards ...

With modern electronics, it is relatively easy to build your own radio telescope. To understand how it can be done, check out a recent paper by Jack Phelps posted to the arXiv preprint server.

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