[SBE] toxic chemical reminiscences

[Bill Harris]

Something to be said for those good ol'
electro-mechanical devices!
Bill in ABQ


-----Original Message-----
From: sbe-bounces at sbe.org [mailto:sbe-bounces at sbe.org]On Behalf Of Bob
Reite
Sent: Thursday, August 20, 2009 7:27 PM
To: sbe member discussion mail list
Subject: Re: [SBE] toxic chemical reminiscences




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 --

>  

> Mike

> Albuquerque


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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