LZ1DX 1951 Bulgaria

Bulgaria did not allow private ownership of transmitter until after WW2.

LZ1DX Dimiter Sibirsky was one of the big DXers in Europe with 263 countries confirmed in 1958. Sibi worked CW, AM, SSB.

QSL courtesy of W5ODD
From the estate of W5JC
Photo from Don Chesser W4KVX DX Bulletin #47, Oct. 14, 1958