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.
Rapid City, South Dakota Rapid City (Lakota: "Mni Lúzahaŋ Otȟúŋwahe" ; "Swift Water City") is the second-largest city in South Dakota (after Sioux Falls) and the county seat of Pennington County. Named after Rapid Creek, on which the city is established, it is set against the eastern slope of the Black Hills mountain range. The population was 67,956 as of the 2010 Census. Known as the "Gateway to the Black Hills" and the "City of Presidents", it is split by a low mountain ridge that divides the western and eastern parts of the city. Ellsworth Air Force Base is located on the outskirts of the city. Camp Rapid, a part of the South Dakota Army National Guard, is located in the western part of the city. The historic "Old West" town of Deadwood is nearby. In the neighboring Black Hills are the popular tourist attractions of Mount Rushmore, the Crazy Horse Memorial, Custer State Park, and Wind Cave National Park.