All Your Garage Doors Belong to US(AF)

The Air Force tested a radio frequency to be used in communication that overlaps with garage door openers. Luckily this frequency would only be used for first responders in a homeland security threat.

A secretive Air Force facility in Colorado Springs tested a radio frequency this past week that it would use to communicate with first responders in the event of a homeland security threat. But the frequency also controls an estimated 50 million garage door openers, and hundreds of residents in the area found that theirs had suddenly stopped working.
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In general, effects from the transmissions would be felt only within 10 miles, but the Colorado Springs signal is beamed from atop 6,184-foot Cheyenne Mountain, which likely(my emphasis) extends the range.
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David McGuire, whose Overhead Door Co. received more than 400 calls for help, said the Air Force may be able to slightly adjust the transmission frequency to solve the problem. If not, it will cost homeowners about $250 to have new units installed.

"The military has the right to use that frequency. It is a sign of the times," he said.

Further evidence that the spectrum is a bit tight. The wireless spectrum is incredibly delicate if you have a powerful enough transmitter. WiFi users are limited to a measly 4 Watts but licensed radio HAM operators have every right to blast WiFi out of the air with power levels up to 1.5 Kilowatts.

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