Read this: Mapping News by Mapperz
Summary: Yellow is the area where the transmitter provides the best signal, green is where there is overlap and the selected transmitter is not the strongest signal. Example http//www.ukfree.tv/transmitters.phpPRH130TRsmap The green/yellow fades to white where the signal is weakest. By frequency this lists broadcast frequencies from C21 to C68, showing the services on each. - mapperz.blogspot.commapperz.blogspot.comMapping News by Mapperz…
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