Where was the city near Powell Butte which the transmitter  was located?
Bend, Oregon Bend is a city in, and the county seat of, Deschutes County, Oregon, United States. It is the principal city of the Bend, Oregon Metropolitan Statistical Area. Bend is Central Oregon's largest city, and despite its modest size, is the "de facto" metropolis of the region, owing to the low population density of that area. Bend recorded a population of 76,693 at the time of the 2010 U.S. Census, up from 52,029 at the 2000 census. The estimated population of the city as of 2013 is 81,236. Bend's metro population was estimated at 165,954 as of July 1, 2013. The Bend MSA is the fifth largest metropolitan area in Oregon.
Black Butte, Oregon Black Butte was an unincorporated community in Lane County, Oregon, United States. It was located near Black Butte, a dark-colored mountain at the headwaters of the Coast Fork Willamette River, about 20 miles south of Cottage Grove, at the confluence of Garoutte Creek and the Little River. The Black Butte Mine, which operated from the 1890s to the 1960s, was one of the largest mercury mines in the state. Mercury contamination from abandoned mine tailings continues to be a health concern in the area, including mercury-contaminated runoff from Furnace Creek that has made its way to Cottage Grove Lake.