Roof tiles absorb water and this will attenuate the signal getting to the aerial in the roof space, this is why your signal is good on a dry day.
Secondly if the signal is poor on a rainy day with a roof top aerial then the chances are that you have water in the co-ax cable and the only answer is to replace the cable
Friday 14 January 2011 4:59PM
Roof tiles absorb water and this will attenuate the signal getting to the aerial in the roof space, this is why your signal is good on a dry day.
Secondly if the signal is poor on a rainy day with a roof top aerial then the chances are that you have water in the co-ax cable and the only answer is to replace the cable