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NR86

Sensibly equivalent to:
ARP15 CV1195 KTW63
See also:
The 'Magic Three' Valves
    
Extras ▼

 

The NR86 (aka ARP15) is a variable μ HF pentode for RF or IF amplification. The prototype was the KTW63 and after 1941 was renamed the CV1195.
The feint etched Type designation.
Another attempt to make the lettering easy to see - not very good.
The top mica with the copper control grid support visible.
The classic envelope is 38 mm in diameter, and excluding the IO base pins is 101 mm tall.
Reference: Datasheet.

 

Pin Connections
IO
1
2
3
4
5
6
7
8
m
h
a
g2
g3
nc
h
k

 

Absolute Maximum Operating Conditions
Beam Tetrode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
gm
6.3
0.3
250
125
-3
10.5
2.6
0.6M
1.5
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated April 29, 2019.
shape:classic construction:pinch type:beam.tetrode age:1930.1940 base:io heater:6.3v pins:8 pin:1.m pin:2.h pin:3.a pin:4.g2 pin:5.g3 pin:6.nc pin:7.h pin:8.k
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