The 6A7E frequency changer is on a UX7 base, its sister valve the 6A8 is identical electrically but is on an International Octal base. We also have a 6A7 in the museum.

The classic envelope is 37 mm in diameter and, excluding the UX7 base pins, is 98 mm tall.

 
Pin Connections

UX7	1	2	3	4	5	6	7	tc
	h	a	g3,g5	g2	g1	k	h	g4

 
Absolute Maximum Operating Conditions

Heptode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm
	6.3	0.3	250	100	-3	3.5	2.7	0.36M	0.55

Thanks to Frank Philipse for supplying the above datasheet

This exhibit was last updated on 02 July 2007 {find valves by name}