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EBF11

 
See also:
Footless Valves
    
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The EBF11 is a double diode pentode designed for use in superhet radio receivers. The pentode can be used as an RF, IF or audio amplifier. The diodes are for signal and AGC rectification.
The dome carries the identification. The case is steel under the paint.
The Footless base.
The wide metal tube envelope is 39 mm in diameter and, excluding the Footless base pins, is 49 mm tall.
Reference: Data-sheet. Type EBF11 was first introduced in 1940.

 

Pin Connections
Footless
1
2
3
4
5
6
7
8
g2
g1
k,g3,m
a
h
h
a(d1)
a(d2)

 

Absolute Maximum Operating Conditions
Pentode
Vh
Ah
Va
Vs
Vg
mAa
mAs
6.3
0.2
250
250
-2.0
5.0
1.8
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated June 17, 2020.
shape:wide.metal.tube construction:glass.disc type:double.diode.pentode age:1930.1940 base:footless heater:6.3v pins:8 pin:1.g2 pin:2.g1 pin:3.k.g3.m pin:4.a pin:5.h pin:6.h pin:7.a(d1) pin:8.a(d2)
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