The EH2 made by Mullard's parent company Philips used the continental Ct8 base that was never popular with British Manufacturers, but enjoyed success in Europe. The EH2 is a Heptode designed as a mixer or frequency changer for superhet receivers.

An unusual feature is the picture of an aeroplane on the back of the envelope.

The classic envelope is 30 mm in diameter, and excluding the Ct8 base pins, is 83 mm tall.

 
Pin Connections

Ct8	1	2	3	4	5	6	7	8	tc
	m	h	h	k	g3	g4	g2	a	g1

 
Absolute Maximum Operating Conditions

Heptode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm
	6.3	0.2	250	100	-3	1.1	1.0	2M	0.55

Thanks to Frank Philipse for supplying the above PDF datasheet

 

This exhibit was last updated on 11 July 2007