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Aluminium or most other metals can very well block an RF signal, by screening. But the aluminium have to be applied in a correct way. Please, describe your problem in more details.
actually i want my receiver to receive signal from one direction only, therefore i want to block signal from other direction. i need to make some kind like a box which one hole on it so the receiver in the box can only receive signal from one direction only.i cant used antenna because my receiver already have built in antenna..
i'm using FM-RRFQ2, at frequency 433Mhz..the range of the signal is about 75m in building and about 150m at open area..so what kind of modification that i need to do?
my receiver already have built in antenna,if i use antenna,the receiver still can receive the signal so it cant be directional anymore..what do u think?
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