OurAirports has records for 5 different navaids with the identifier "CM". Please select the one you'd like to view.
Bangladesh
330 KHz (CM -.-. --)
-.-. --
France
369 KHz (CM -.-. --)
United States
275 KHz (CM -.-. --)
391 KHz (CM -.-. --)
407 KHz (CM -.-. --)