Unreadable characters in vsql

From my Windows computer i insert 1 row with russian chars

dbadmin=> insert into stage.test22 values('март'); OUTPUT
--------
      1
(1 row)

From my server side vsql session i query inserted data and see unreadable chars

dbadmin=> select * from stage.test22; name
------
 ▒▒▒▒
(1 row)

How could i solve this problem?

I need use vsql from my Windows computer to load data into db.

Oleg.