OurAirports has records for 6 different navaids with the identifier "MU". Please select the one you'd like to view.
Germany
367 KHz (MU -- ..-)
-- ..-
Indonesia
235 KHz (MU -- ..-)
Lesotho
317 KHz (MU -- ..-)
Mongolia
570 KHz (MU -- ..-)
Tanzania
312 KHz (MU -- ..-)
Zimbabwe
405 KHz (MU -- ..-)