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GEC Tuneon neon tuning indicator

Size This valve measures 115x16mm overall and has a 4 pin base

The Tuneon consists of a neon filled tube containing three electrodes, 2 short and 1 long. It is intended for use as a visual indication of the correct tuning point in an AVC receiver. On the passage of a small current through the tube a luminous glow appears on the long electrode. If the tube is connected in a suitable circuit correct tuning is indicated when the glow is of maximum length.

Striking voltage 165V (approx)
Cover voltage 180V (approx)
Current at commencement of glow 0.15mA
Normal operating current 1.4mA

Inside view


Donated by John Bradford

This file was last modified 14:59:13, Tuesday September 02, 2014