nz FR5 1928 France Field, Canal Zone
Operator: Walter B. Berg
In 1927/1928 the call-sign was changed to
nzFR5 (according to the international intermediate prefix nz for
the Canal Zone), and in 1929 to KFR5 (also written as K-FR5).
QSL Patrick Rigg Collection
Info courtesy of Norbert Maibaum