The 6146 is a very popular small transmitting beam tetrode valve normally used in pairs within HF transmitters of 100W output.

For mobile use a quick heating version was made where 70% of full power was available in 0.5 seconds. This was the QZ06-20.

Much used in amateur radio equipment. The Heathkit designs of the 1960s being typical.

See 12BY7A that was often used as a driver stage in amateur equipment.

The wide glass tube envelope is 36 mm in diameter and excluding the IO base pins, the valve is 78 mm.

 
Pin Connections

IO	1	2	3	4	5	6	7	8	tc
	k-bp	h	g2	k-bp	g1	k-bp	h	m	a

 
Absolute Maximum Operating Conditions

Beam Tetrode

Vh

Ah

Va

Vs

Vg

mAa

mAs

mAg

Pdriv

Pout

Pdiss

freq

f.max

6.3

1.25

600

150

-58

112

9

2.8

0.2W

52W

20W

60

175

Thanks to Frank Philipse for supplying the above datasheet

This exhibit was last updated on 12 April 2008 {find valves by name}