History of Spread

Spectrum

• Started in the 20's with the advent of RADAR enhanced ranging and resolution

• 1959 - John Costas, K2EN paper

• 1970's - GPS (Global Positioning System)

• 1981 - First Amateur Radio Usage

• 1985 - Part 15 unlicensed devices

• 1995 - RM-8737 / Docket 97-12 SS Rules Change