Colin Cubitt
Colin 30d
Vacuum tubes
Low voltage vacuum tubes, DAF96 & DAF91. Heater voltage.. 1.4v, Plate.. 70v.
Many years ago I used these tubes to construct a GDO (Grid Dip Oscillator) used to indicate resonance of Antennas - Transmission lines - or other tuned circuits of my Ham Radio system.
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Uploaded on September 14, 2006
Taken on September 14, 2006
Vacuum tubes
Low voltage vacuum tubes, DAF96 & DAF91. Heater voltage.. 1.4v, Plate.. 70v.
Many years ago I used these tubes to construct a GDO (Grid Dip Oscillator) used to indicate resonance of Antennas - Transmission lines - or other tuned circuits of my Ham Radio system.
4,137
views
4
faves
5
comments
Uploaded on September 14, 2006
Taken on September 14, 2006