I’d like to increase personal security by receiving Wifi connections 50-100 km away from physical device location, with high decibel to milliwatts (dbm) reading to overcome path attenuation by foliage and other obstacles. This would allow me to avoid the geographical restrictions imposed by the local ISP’s Wifi connections, because I would be able to access the internet wherever I please and at any point in the system (within a max 100 km radius).
I’m thinking of using a Yagi directional antenna or maybe a parabolic grid, but the ones I could find so far are significantly limited in range, at 15-20 km max, never in excess of 50 dbm. Where can I find a Yagi or parabolic grid with a range of 50-100 km? Do I need to purchase industrial-grade radio equipment for this kind of Wifi frequency range or is this a DIY project? If it’s DIY, what equipment will be needed and are there any guides to building one?
Not at all familiar with RF theory, but can a Wifi range be increased on say a parabolic grid from 15-20 km to 50-100 km?