The YX510 dual band repeater works well. I bought it mainly for a Verizon broadband USB modem that was only getting at best 2 bars and sometimes none. As soon as I hooked up the zboost (with the signal antenna at the roof peak), I went to 5 bars. I was getting RSSI of -100 and up and that went to -65 so I am getting a good signal to the USB modem now. I went from download/upload speeds of 100/75 to 650/250. I have the zboost sitting right beside the laptop so I cannot speak for range. I haven't tried it with my cell phone but its bars went up, too. It is a tad pricey, but it makes broadband possible for me whereas my only other choice would have been Hughes Net satellite which isn't getting such great reviews from users and is not portable at all.