thanks for this, my maths is a bit weak and I last did this sort of calculations in 2008. I got around -79dbm for a phone at 200km, now I think thats probably

thanks for this, my maths is a bit weak and I last did this sort of calculations in 2008. I got around -79dbm for a phone at 200km, now I think thats probably a bit high. Even so even -90dbm is certainly something thats workable with