The QV04-7 is a single beam tetrode for transmitter use up to the low VHF region.

The design is all glass as were all of the B9G based valves. The valve would have been used for driver and frequency multiplier stages as well as for low power transmitters. It was designed for class C service.

The wide glass tube envelope is 31 mm in diameter and, excluding the B9G base pins, is 59 mm tall.

 
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

Thanks to Frank Philipse for supplying the above datasheet

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This exhibit was last updated on 10 June 2007 {find valves by name}