This single beam tetrode is an early all glass envelope design, probably from the early 1940s. The output is modest and the dissipation high in relation to the output. The other possible use would be as a frequency multiplier rather than a class C amplifier.

The wide glass tube envelope diameter is 30 mm, with a wider skirt, the overall length excluding B9G base pins, is 58 mm.

 
Pin Connections

B9G	1	2	3	4	5	6	7	8	9
	h	a	g2	g2	s-bp	k	g1	s-bp	h

 
Absolute Maximum Operating Conditions

Beam Tetrode	Vh	Ah	Va	Vs	Vg	mAa	mAs	mAg	Pout	Pdiss	freq	f.max
	6.3	0.6	300	250	-50	44	6	0.4	7.7	7.5	60M	150

This exhibit was last updated on 12 January 2004