The CCH35 is described by Mullard as a triode hexode for use as a frequency changer. The hexode section is designed for operation with AGC. The CCH35 is an ECH35 except for the 200 mA heater. The exhibit shows the Mullard bright red metalising finish. This valve would have been used for universal voltage mains sets, alternating or direct current. It would have been available for use in the early television sets.

The classic envelope is 33 mm in diameter and, excluding the IO base pins is 93 mm tall.

 
Pin Connections

IO	1	2	3	4	5	6	7	8	tc
	m	h	a	g2,g4	gt,g3	at	h	k	g1

 
Absolute Maximum Operating Conditions

Hexode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm
	7	0.2	250	100	-2	2.3	3	1.25M	0.65

Triode	Va
	150

Thanks to Frank Philipse for supplying the above datasheet

This exhibit was last updated on 08 June 2007 {find valves by name}