Norddeutscher Rundfunk (NDR) is a public broadcaster based in Hamburg. It currently serves the German states of Niedersachen, Schleswig-Holstein, and Mecklenburg-Vorpommern as well as the city of Hamburg. The network produces several programming streams which are transmitted on an FM network throughout its broadcast area. When we lived in Germany, NDR also broadcast on five medium wave (MW) frequencies, all of which from what I understand are off the air. They responded with QSL cards, which are seen below, for the reception reports sent to them. All of their MW outlets could be heard with little or no difficulty in southern Germany.

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