network security
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20:25#112 LoRa / LoRaWAN De-Mystified / Tutorial
1.1M views • 9 years ago
Andreas Spiess
Andreas Spiess explains the basic principles of LoRa and LoRaWAN, their pros and cons, link budget and bandwidth. He shows his own gateway and client sending a message to The Things Network.
20:16How To Contact The Voyager 2 Probe (PART 1)
93K views • 9 years ago
EEVdiscover
Dave Jones of EEVblog and Richard Stephenson tour the 70m DSS43 dish at the Canberra Deep Space Communication Complex and explain how NASA talks to Voyager 2. It covers the transmitters, receivers and tracking involved.