If this is just for receiving on all devices then you can use any antenna. You would be better off using at least two or three antennas. One for wi-fi and the other for the rest of you stuff using a splitter. Remember though, if you want to transmit, as on the CB, then you need to seperate the antenna feed from each receiver or you will transmit right into each device on the same antenna feed, thereby pro'lly killing each device except the CB. Also, each time you split off from the antenna you will have signal loss to each device. Usually good antenna splitters, known as duplexors for two feeds, or triplexors for three feeds don't have that much of a frequency spread. Certainly not the spread you're looking for.