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807

Sensibly equivalent to:
5B/250A ATS25A ATS25 CV124 CV1060 CV1364 CV1374 CV1572 QV05-25 RK39 VT-100 VT60 VT60A
See also:
Beam Tetrodes and the 807 - The Williamson Amplifier - CV1060 short entry
    
Extras ▼

 

This exhibit is a generic 807 transmitting variant of the 6L6G design. It is interesting because the original 807, from all makes, was between 121 and 126 mm tall, and this version is only 116 mm tall and looks more compact. The height reduction seems to be in the length of the pinch and above pinch supports - all adding to a potential reduction in lead inductance and thus better HF response.
The parameters given are for single ended use. When used in a class AB1 as a push pull pair with 600 Volts on the anode an output power of 65 Watts was normal.
The anode, ceramic insulators and the distinctive oval screen below the lower mica.
The classic envelope is 50 mm in diameter, and excluding the UX5 base pins is 116 mm tall.
References: Datasheet & 1040.

 

Pin Connections
UX5
1
2
3
4
5
tc
h
g2
g1
k
h
a

 

Absolute Maximum Operating Conditions
Beam Tetrode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
gm
Pout
6.3
0.9
300
250
-14
83
8
20k
6.5
6.7W

 

Absolute Maximum Operating Conditions
Beam Tetrode
Vh
Ah
Va
Vs
Vg
mAa
mAs
mAg
Pdriv
Pdiss
Pout
freq
f.max
6.3
0.9
600
250
-45
100
7
3.5
0.2W
25W
40W
60
125
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated October 24, 2016.
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