WF RFT, AU. An approximate analogue of 6j10p.
The EF860 lamp was released in the GDR and is an analogue of the EF800, which in turn is an improved version of the EF80.
EF860 is a high-frequency pentode designed to amplify signals in
long-distance communication systems, approximately corresponding to 6J10P, but having
a cap 6J51P (=EF184). With 6J32P (=EF86), this lamp has nothing
in common except a general appearance, but it’s just a screen.
