HB9SI 1961 Switzerland

Operator: Walter L. Baumgarten

Walter HB9SI was famed in DX circles for calls PA0BB, K2UN, AP4UN, AR8UN, D4FLA, SV8UN, ZC6EA, ZC6UN, ZC6UNJ, and more!

QSL from the estate of W3WGH / W3GH
Photo from Don Chesser W4KVX DX Magazine #155, January 20, 1962