The CV309 is the commercial QV04-7 single beam tetrode badged for UK Government procurement. This design uses an early all glass envelope and base. The output is modest and the dissipation high in relation to the output. This suggests use as a linear amplifier rather than in class C. Alternatively the design was not efficient.

The wide glass tube envelope diameter is 31 mm, with a wider skirt, the overall length excluding the B9G base pins, is 56 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 February 2008