Hanover CS, IL to Lee, IL Route

Thanks to Terry Michaels for contributing this information.



These sites were part of a four hop microwave link from the Lee, IL main station, to the Hanover, IL earth station (Hanover C.S.). From Lee, the hops to Dixon, Chadwick and Elizabeth used 4 GHz TD-3D equipment. The hop from Elizabeth to the Hanover tower (Hanover R) used TN-1 microwave radios at 11 GHz, this was done to prevent interference with the low level 4 GHz (C band) signal coming down from the satellite. At Hanover the 11 GHz signal was received at a short tower on the top of a ridge right alongside the entrance drive. The earth station had two large parabolic satellite downlink antennas, and was built about mile to the south, down in a ravine. The steep walls of the ravine provided a natural barrier to interfering signals from other 4 GHz microwave stations in the general area. A 22 tube L type coaxial cable brought the IF inputs and outputs from the 11 GHz equipment at the tower to the earth station receivers and transmitters through a 100A switch.

The link was brought on line around 1974, and retired in 1986. According to neighbors the 2 horn antennas aimed at Dixon on the 240 foot tower at Lee were removed by helicopter shortly thereafter. AT&T sold the towers and land at Dixon, Chadwick and Elizabeth in 1988. The earth station and the 11 GHz link tower were dismantled around 1994.


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Created on January 2, 2003 at 18:47 by Albert LaFrance