[SBE] toxic chemical reminiscences
br at telcen.com
Thu Aug 20 21:27:06 EDT 2009
Mike Langner wrote:
> Got a handful in my garage.
> Used to use them with RTTY.
> And then there's the vial-of-mercury-switch about the size of half a
> test-tube with two electrodes, about an eighth of a cup of mercury, and
> an armature that turns it upside-down or right-side up depending on
> whether the relay/switch is supposed to be on or off.
> I think this one came out of a motorized tower light flasher --
We still have that type of tower flasher in service at a station. The
solid state flasher we tried got killed by lightning, I repaired (which
amounted to cleaning and lubricating) and put the electro mechanical
flasher back in service and it's still going strong.
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