D4JPC 1931 Germany

Operator: Rudi Hammer, Berlin.

D4CP 1929:
D4AFF 1938:
Rudi Hammer, Berlin, DE 0485, D4CP, D4JPC, D4CAF, D4GWF, D4AFF, DA7AA after 1946, DL7AA after 1949. He was a very well known DXer.

QSL & Info courtesy of Norbert Maibaum
Callsign info courtesy of K6EE