OurAirports has records for 6 different navaids with the identifier "MM". Please select the one you'd like to view.
Canada
388 KHz (MM -- --)
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France
317 KHz (MM -- --)
Iran
338 KHz (MM -- --)
Myanmar
330 KHz (MM -- --)
United States
383 KHz (MM -- --)
392 KHz (MM -- --)