Walkie Talkie Timeline By Dom Ross & Michael Jones By michaeldom Jun 22, 1940 Motorola SCR-536 The SCR-536 weighed 2.3 kilos with batteries This handheld radio became a World War II icon. The battery life was about one day of normal use. Jun 22, 1943 Motorola SCR-300 Motorola designed the world's first FM portable two-way radio, the SCR-300 backpack model, for the U.S. Army Signal Corps. Jun 22, 1958 Motorola Motrac Vehicular Two-Way Radio Motorola introduced the Motrac radio, the world's first vehicular two-way radio with a fully transistorized power supply and receiver. Jun 22, 1964 Panasonic RJ-3 A small, low-powered handheld radio. Well constructed and somewhat rugged. It is a solid model. Jun 22, 1983 Archer Space Patrol Walkie Talkie Two way, fully wired. Push to talk switch. Crystal Controlled Channel 14, sends and recieves om 27 MC. Jun 22, 1993 Kirisun PT7200 A professional-quality walkie-talkie with many advanced features. The Body size is 10 x 60 x 40mm Jun 22, 1999 Doro-WT96 X With a maximum range of 14 km, the WT96 X Pro walkie-talkies from Doro are great for keeping in touch. Jun 22, 2005 Oregon TP391 Slimline Ideal for mountain biking, climbing. At only 16mm thick, its slim design is perfect to take with you anywhere. With an effective range of 5km Jun 22, 2008 Motorola TLKR T3 With a range of up to 5km², a typical battery life of 20 hours and best of all, no call charges. Jun 22, 2010 Motorola T5583 A walkie talkie that can go up to 2KM in open area condition, it has built-in 8 channels and each channels with 38 interference eliminator codes.