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KTW63

Sensibly equivalent to:
6K7G ARP15 CV1195 CV1941 NR81 NR86 W63
See also:
The 'Magic Three' Valves - CV1195 short entry
    
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The KTW63 is a beam or kink-less tetrode for HF and IF amplification in broadcast receivers and replaced the W63. The valve is variable mu designed to have the stage gain controlled by a voltage derived from the final rectified signal.
The paper Osram Label.
The typical M-OV style of identification. Sadly little detail can be seen of the electrode structure.
The classic envelope is 38 mm in diameter and, excluding the IO base pins the valve is 102 mm tall.
References: Datasheet & 1040. Type KTW63 was first introduced in 1938.

 

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 05, 2015.
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