NDB Ingolstadt (Mike) *MIQ :

 

a recording from 2009 (rb)

 

this card from the Munich branch of DFS gives complete details (Rudy van Dalen)
very interesting QSL with letter and flight chart (Patrick Robic, 1999)
a visit to the site revealed these 3 views (rb, 2014)

 

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Callsigns:
MIQ

 

Frequencies Morse Telegraphy:
426
426.5