Listed is a 1980s Hirschmann Power Antenna . This unit is New old stock never installed,with original installation instructions. Hirschmann was the Mercedes Benz (literally) of power antennas. This would be cool in your classic ride or your 4x4 when your off-roading and don't want to lose your antenna or if the one in your 80s Benz is tired. Does not include relay switch . (Radio Shack?) Thanks for looking.