OP147MN World War I special call
Special callsign OP147MN will be active from 22 August to 20 September to commemorate the vital role played in the war effort by MN7. This was a clandestine wireless station operated during World War I by Paul Goldschmidt, sub-lieutenant in the Belgian army, behind enemy lines in the village of Baarle-Hertog. QSL via ON2KP, direct or bureau.