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Re: [TowerTalk] Tower Remote Control

Subject: Re: [TowerTalk] Tower Remote Control
Date: Thu, 14 Sep 2006 18:05:36 EDT
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In a message dated 9/14/2006 1:34:05 P.M. Pacific Daylight Time, writes:

>  I have a Tri-Ex LM-470 motorized crank up tower. I would  like to be able 
remotely control it from my ham shack. The only remote  control system that I
have been able to find is the original system that  was offered by Tri-Ex. My
concern with that system is that it uses (GASP)  vacuum tubes to provide the
delay required when changing directions. Does  anyone out there have a
schematic or other information on a more modern  design? I have the
facilities to fabricate anything needed, or I would be  willing to purchase
an existing system. Any  suggestions?

        Yeah, don't do it. The only  way to insure that a crank-up goes up or 
down successfully is to be in the  direct vicinity - preferably standing next 
to it - watching it as it's moving.  Otherwise a cable can snag and the 
result can be breaking a haul cable and  watching the whole thing crash down. 
        If you can see it from the  shack (what happens at night?), you'll 
probably be okay but you still probably  aren't close enough to watch 
        I've seen a couple of  crank-ups where this has happened and it was 
just some cable getting hung up  producing a major problem. 
Steve     K7LXC
Cell: 206-890-4188

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