The DL63 double diode triode by Osram would have been designed for receiver applications. Traditionally such a valve would provide signal and AGC rectification, followed by the first audio amplification.

The classic envelope is 37 mm in diameter and, excluding the IO base pins, is 95 mm tall.

 
Pin Connections

IO	1	2	3	4	5	6	7	8	tc
	m	h	a	ad(2)	ad(1)	-	h	k	g1

 
Absolute Maximum Operating Conditions

Triode	Vh	Ah	Va	Vg	ra	gm
	6.3	0.3	250	-3	22,500	1.6

This exhibit was last updated on 07 August 2005