An Amstrad CB radio emitter.
[[File:Amstrad CB901 radio emitter.jpeg]]
[[File:Amstrad CB901 radio emitter.jpeg|600px]] == Using the CB radio as a modem ==
CB radio could be used as a modem through the cassette port of the Amstrad CPC.
[[File:CB radio modem1.jpg|600px]][[File:CB radio modem2.jpg|600px]][[File:CB radio modem3.jpg|600px]] == Packet Radio == Packet Radio is a digital radio protocol that evolved from previous digital radio protocols like Morse code or Teleprinter. Packet Radio is frequently used by amateur radio operators. See: [https://youtu.be/ZC-RXBuUatA Demonstration of Packet Radio transmission with an Amstrad CPC] [https://youtu.be/OvTnnRHL4wY Amstrad CPC connecting to BPQ Chat and DX Cluster via Packet Radio] [https://www.cpc-power.com/index.php?page=detail&num=13843 CP/M+ Packet-Radio software]
== FM radio diffusion ==