Which cities currently have ground repeaters for XM Radio?
The known list, to date include: Akron Albany Albuquerque Atlanta Austin Birmingham Boston Buffalo Charlotte Chicago Cincinnati Clevland Columbus Dayton Denver Detroit Dallas/Ft. Worth Greensboro Greenville, SC Harrisburg Hartford Houston Indianapolis Jacksonville Kansas City Knoxville Los Angeles Louisville Las Vegas Memphis Miami Milwaukee Minneapolis Monterey Nashville Norfolk New Orleans New York City Oklahoma City Orlando Philidelphia/Wilmington Phoenix/Tucson Pittsburgh Portland Providence Raleigh Richmond Rochester Sacramento San Antonio San Diego Seattle San Francisco Salt Lake City Springfield, MA St. Louis Syracuse Tampa Toledo Washington DC/Baltimore 4.6.