NDB Spessart *PSA :
nice QSL card from 1999 (Patrick Robic)
in 2009, Dieter Pohlmann received this card for reception verification
as an en-route NDB, this station is located within the forest and mountain region 'Spessart' between Frankfurt and Würzburg...
...and here some detail from this NDB (both photographs: rb, 2013)
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Callsigns:
PSA
Frequencies Morse Telegraphy:
370