Vacuum tube collection
This is a part of my collection of old vacuum tubes (electron valves).
I have found this stack in my grandparent's cellar and I have not yet managed to identify all of them. I can also only guess at their age and state. Some look like they haven't been unused yet and at least one (RV2 P800) appears to be from the second world war.
If you can provide any information that is missing below please drop me a mail. Thanks.
Philips Miniwatt PL 36
RCA 77
77, manufacturer unknown
Tungsram Barium 77, England
Sylvania 6SJ7GT, US
Tungsram UCH 21
Telefunken RV2 P800, Germany. This is a multifunction pentode that was used in battery-powered devices by the German military during the second world war. After the war it was commonly used in amateur electronics, since it was widely available from old equipment.
The box with date stamp "8 sep 1940" was found by Bas Hermans.
Telefunken EFM 11
Philips Miniwatt EM 34, Holland
1299, manufacturer unknown
Type and manufacturer unknown
Tungsram PY 82
Ei PCL 82, Yugoslavia
Philips Miniwatt EAF 42
Lorenz EBC 91, Germany
Lorenz 6BA6, Germany
Type and manufacturer unknown
Tri?gram radio EA?
Type and manufacturer unknown
Type and manufacturer unknown
Type and manufacturer unknown
Type and manufacturer unknown
Tungsram ECH 81
