The KK32 is an octode frequency changer on an IO base. The same valve on the older B7 base is designated FC2A and was introduced in 1937.

The triode details given refer to the triode oscillator formed between the cathode and grid 2 of the octode. The second grid was probably little more than two vertical support rods.

The classic envelope is 45 mm in diameter, and excluding the IO base pins is 109 mm tall.

 
Pin Connections

IO	1	2	3	4	5	6	7	8	tc
	m	f(+)	a	g3,g5	g1	g2	f(-)	-	g4

 
Absolute Maximum Operating Conditions

Octode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm	μ
	2.0	0.13	135	45	0	0.7	0.7	2.5M	0.27

Triode	Va	mAa
	135	2.1

This exhibit was last updated on 04 February 2008