Wireless Keyboard Range Extension

For a long time the sometimes shaky wireless connection of my “couch keyboard” had been bothering me, when I realised that a few sheets of aluminium foil placed behind the antenna improved the situation considerably. Yesterday I finally sat down and solved the problem for good:

The simple spherical mirror made out of cardboard and a layer of aluminium foil with the receiver in its focal point works perfectly. It extended the range of my keyboard beyond my balcony (~ +60%).


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