BVWS Bulletin Volume 5, Number 3 (December 1980)
Front cover: Four Avometers from the period 1934-1936.
| Page | Title | Summary/Notes |
|---|---|---|
| 33 | The Thoriated Tungsten Filament. Ian Higginbottom |
The development of “dull emitter” filaments, their uses and rejuvenation. Includes a list of dull emitter valves. |
| 37 | Restoring Amplion Horn Speakers With A Black Crackle Finish. Alan T. Shaw |
Restoring the finish on early aluminium horns. |
| 38 | Biased In Favour of Stability Part 2. Philip Beckley |
The low frequency stages (previous part in V5N2). |