Two maps are presented below, the top map produced by RadioMobile for a directional aerial transmitting 500 watts from the Hemdean mast.  Below that is the map produced by NTL for Classic FM when this station joined the BBC in providing national radio coverage to the Reading area.

Above:  The coverage plot by RadioMobile.  The Orange area shows coverage above 74 dB uV/m: The yellow area shows 60 to 74 dBuv/m:  The Green shows 54 to 60 dB: The blue area shows the 48 to 54dB uV/m coverage.

Above:  A plot produced by NTL for the Classic FM radio coverage from Hemdean.  Pink is 74 dB uV/m and above; Yellow is 60 to 74:  Green is 54 to 60 and Blue is 48 to 54dB uV/m