The 1F6 is a screened tetrode with double diodes and rated for battery use. It would have found use as a final IF amplifier, signal detector and AGC detector in battery superhet receivers.

Inside the perforated screen is a cylindrical anode. The grids are of thin wire held on notched support rods. The grids are rounded at the support rods and flat across the width. The smaller cylinder is an auxillary diode with a directly heated single strand filament.

The classic envelope is 35 mm in diameter and, excluding the UX6 base pins, is 97 mm tall.

 
Pin Connections

UX6	1	2	3	4	5	6	tc
	f+	a	g2	a(d2)	a(d1)	f-	g1

 
Absolute Maximum Operating Conditions

Tetrode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm
	2.0	0.06	180	67.5	-1.5	2.2	0.7	1M	0.65

Thanks to Frank Philipse for supplying the above datasheet

This exhibit was last updated on 09 June 2007 {find valves by name}