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My second ever job in STEM was with an RF Lab analyzing orbital line of sight statistics to help plan ground station locations for LEO satellite constellations.
Downlink bandwidth was a huge bottleneck for Earth observation sats.
Here's a primer thread on sat commsđź§µ... See more
Marconi could soon transmit and receive pulses of information across distances of up to 2.5 km. He had invented radio.
Simon Singh • The Code Book: The Science of Secrecy from Ancient Egypt to Quantum Cryptography




RF channel for RT Tx of video information & telemetry data,receiving RC over a digital RF Ch with COFDM.
The ch is compatible with analog(PAL) & digital(VGA, Full HD) video cam & has the ability to work with a repeater, as well as remote control of modes.
https://t.co/baKNAscc2b https://t.co/rPyVUPKhqB
receives either the paper or the electronic data about interactions and performs the billing activities on behalf of the facility.