Is 121.5 always monitored?

The NOTAM states that, 'all aircraft operating in the United States national airspace, if capable, shall maintain a listening watch on VHF guard 121.5 or UHF 243.0. ' The value of 121.5 is that someone is always listening—every ATC facility monitors it.



People Also Ask

The most popular is the 144-MHz (2-meter) band. That's where you'll find a lot of ham radio operators as well as local public safety calls. If you want to hear the civilian aircraft frequencies, you'll want to look for a radio that has the 118 to 136 MHz air band.

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