CV1052 / VT52 / EL32 / 10E/11398 Pentode
This valve is equivalent to the EL32 audio output pentode.
The valve shown on the right has the marking GPO Batch Sampled 8288 marked on the base and M02 8612 on the glass. See below for other examples. See also CV5233.
*: At Va=Vg2=250, Vg1=-18.5, Ia=30mA
More examples. These measure 108x35mm. The top two are VT52's, the bottom left is simply marked CV1052 and the bottom right is marked both CV1052 and EL32 - this one carries the marking GPO Batch Sampled 4388 on the base.
First three valves donated by Chris Colebrook, EL32 by Bryan Lonsdale
This file was last modified
11:43:12, Thursday February 24, 2022