200 miles NE of Colon, Panama
"Aleck" Sienkowski, x-1SK, x-1HV, 1HV, later W1HV,
Silent Key (1906-1958).
Aleck was Polish, born in Russia. During the 1920's he was a ship operator, then later was employed by Radio Corporation of America.
QSL courtesy of W5RG
Info courtesy of W5KNE