As once-loyal listeners tune away, most AM stations are barely holding onto life, slashing staff and budgets as deeply as they can while struggling to find a return to profitability. Once upon a time, having a broadcast license of any kind was like having a permit to print money. In today’s world, that's no longer true.
But, with 10,000 AM broadcast towers in the United States, stretching high into the sky, there may be an opportunity for wireless carriers who don't want to argue with community opposition from neighborhoods where residents don't want yet another cell tower. The amount of money an AM station owner can pocket by sharing its tower with a wireless partner varies widely, depending on the tower's location, height, and several other factors. But it's certainly more income — and a way to keep "old" technology from becoming obsolete.