Hi All, It is Russian PA with 2 GS35b built by UA6HN in 1985: http://www.cqham.ru/foto/showphoto.php?photo=761&title=-d5-ce-d0-ce-d8-cecf-ce-cc-ce-c3-c0-cb&cat=500 It worked during 10 years without electricity switch off. 3.3kV plate voltage and and 2.5-3A current. My QRO Parts Site: http://www.ur4ll.net Best regards, Alex, UR4LL KO70XG