Jeff Layman wrote:

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Rather off-topic, but in one of the pictures (uncaptioned, about 2/3 to
3/4 of the way down, where the clock is on a stepped, wooden base) the
valves are nicely coloured - green on the left, purple top right, and
blue bottom right. I assume these are simply non-functional valves with
a coloured led hidden in the base. Those are pretty unusual colours for
leds; maybe a white led with a coloured filter has been used. And are
the valves non-functional? I would expect the base to get pretty hot
with the filament at that end. Not a good environment for an led.


** Likely the valves are not operating and the rather bright light is coming from thin ,coloured filament bulbs - as used for xmas decorations and tree lighting.

The hole in the bottom of a 9 pin valve base is not very big.



..... Phil