U9AC 1936 Asiatic Russia

Nikolaj Khitroff lived in Tomsk Siberia;
1936 - 1941 U9AC
1933 - 1936 U9AF,
1928 - 1933 au1AI
1927 - 1928 69RA

The U9 callsigns started to be issued in mid 1933.

QSL courtesy of W8KPB, NG6W
Callsign Info courtesy of UY5XE
U9 Info courtesy of RA3UX