|Is PMR 446MHz the replacement for CB Radio...I dont think so BUT what is it??
PMR Radio is a Service introduced in 1999 that allows us to
enjoy a free radio service using small compact handheld
radio's. It is available to small businesses and private users
alike on a set of harmonised european channels.
Unlike 4w CB power these handhelds are restricted to 500mw (1/2 W)
ERP With a fixed aerial and cannot be used in conjunction
with a Base aerial. It is intended for short range only. No licence is required.
The 8 Frequencys are;
446.00625MHz 446.01875MHz 446.03125MHz 446.04375MHz
446.05625MHz 446.06875MHz 446.08125MHz 446.09375MHz
When these frequencies are used in combination with a number of CTCSS or
DCS tone codes, they can provide many channel combinations. Basically there are 38 sub
channels on each of the 8 frequencies making a total of 304 channels.
Distance wise they can go from a few hundred yards in heavily built up areas to around 10
miles depending on the radio/terrain and in favorable conditions ie, high up with no obstructions.
The Best Long Range known record is 535.8Km (333m) From Blyth (UK) to Almere (NL)