ON JUNE 1, 1953, the Illinois Power Company's new power station near Hennepin, Ill., went into service, adding 75,000 kw of generating capacity to its system. At the same time a 6-station 112-mile microwave radio relay system between the Hennepin Station and the Power Company's dispatching center in Decatur, Ill., officially began operation, providing over 1,300 circuit miles for telemetering and remote control, and more than 400 channel miles for voice communication. This radio system is leased by the Power Company from the Illinois Bell Telephone Company which engineered, owns, and maintains it.