Knowledge

PTT basicsHalf-duplex, channels, CTCSS, what PTT actually is PMR446Licence-free European UHF — Fylde Network 446 territory UK CB (27/81)British CB channels, CEPT, FM/AM/SSB notes Amateur radio (UK)Ofcom licences, 2 m / 70 cm, GB3PN and local practice Marine VHFChannel 16, distress and calling discipline PoC / network radiosMagic PTT, HT App, cellular & Wi‑Fi PTT FRSUS Family Radio Service overview GMRSHigher power and repeaters (US) MURSVHF multi-use, external antennas Commercial LMRBusiness and public-safety style systems FreebandReceive-only education — transmitting is generally illegal Choosing a radioMatch the job: farm, van, boat, site, hobby Comparison tableSide-by-side services, power, licence, range Safety & glossaryOfcom-minded legal notes and terms