The KT101 is an audio output beam tetrode. With a load of 3,000 Ω and a cathode resistor of 180 Ω the KT101 would generate 3.8 W at 12% distortion. The KT101 is also specified for use strapped as a triode.

The KT71 on an IO base is a similar valve.

The reverse of the glass envelope carries the paper Marconi label.

The wide glass tube envelope is 32 mm in diameter, and excluding the B8Bbase pins is 71 mm tall.

 
Pin Connections

B8B	1	2	3	4	5	6	7	8
	h	a	g2	ic	ic	g1	k	h

 
Absolute Maximum Operating Conditions

Beam Tetrode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm
	80.0	0.1	175	175	-9.8	70.0	12.0	-	10.0

Triode	Va	Vg	mAa	ra	gm
	175	-7.5	120.0	-	11.5

Thanks to Frank Philipse for supplying the above PDF datasheet

 

This exhibit was last updated on 10 May 2009