The 6159 is the 6146 with a 300 mA heater. It is a small transmitting beam tetrode valve normally used in pairs within HF transmitters of 100W output.

The side view.

The anode is carbonised and has fins as extra radiators.

The base is standard International Octal but the valve skirt and envelope are wider than the standard base.

The wide glass tube envelope is 38 mm in diameter and excluding the IO base pins, the valve is 80 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

26

0.3

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 01 September 2008 {find valves by name}