Reinventing the Walkie Talkie

Back in the day, this kind of thing was what people used to talk to each oth­er over dis­tances, using radio waves. You were lim­ited by the power of the unit and the type and num­ber of obstacles between you and the per­son you were talk­ing with. And gen­er­ally, your con­ver­sa­tion could be over­heard by […]