http://www.walkietalkietwowayradios.com Learn all about 2-way radios for work and play Fri, 20 Jan 2012 21:12:44 +0000 en hourly 1 http://wordpress.org/?v=3.3.1 http://www.walkietalkietwowayradios.com/325/two-way-radio-protocol-and-sops/ http://www.walkietalkietwowayradios.com/325/two-way-radio-protocol-and-sops/#comments Sun, 16 Aug 2009 08:36:32 +0000 David Harvey VK2DMH http://www.walkietalkietwowayradios.com/?p=325 http://www.walkietalkietwowayradios.com/325/two-way-radio-protocol-and-sops/feed/ 0