The PCC85 is a VHF double triode. These were used in band three television tuners as RF amplifiers and oscillators.

The construction is of two pressed metal box anodes separated by space and an electrostatic screen. Within the small box anode cavity is a flat cathode and close spaced grid.

The thin glass tube envelope is 20 mm in diameter and, excluding the B9A base pins, is 47 mm tall.

 
Pin Connections

B9A	1	2	3	4	5	6	7	8	9
	a(2)	g1(2)	k(2)	h	h	a(1)	g1(1)	k(1)	s

 
Absolute Maximum Operating Conditions

Triode	Vh	Ah	Va	Vg	mAa	ra	gm
	9.5	0.3	170	-1.5	10	8,000	6.2

Thanks to Frank Philipse for supplying the above datasheet

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This exhibit was last updated on 10 June 2007 {find valves by name}