[TowerTalk] Ham IV Stuck

[Dave Hachadorian]

On the control unit,  jumper terminals 5-8 to bypass the limit switch.

Dave Hachadorian, K6LL
Yuma, AZ



-----Original Message----- 
From: Kim Elmore
Sent: Monday, December 23, 2019 5:41 PM
To: towertalk at contesting.com
Subject: Re: [TowerTalk] Ham IV Stuck

It sounds like the CW limit switch is stuck open. You can wire around
the limit switch at the control head as a test (see the manual for which
wires go to the limit switch and simply jumper across them.

Kim N5OP

On 12/23/2019 5:54 PM, Ron 'KF5JRA' Rosson via TowerTalk wrote:
> First of all “Merry Christmas & Happy New Year”
>
> After a ton of googling I thought I would expand my issue to a stronger 
> brain trust than Google.
>
> I have a ham IV nestled in a Glen Martin Roof top tower with a 6’ mast and 
> a K4KIO hexbeam (picture can be found here 
> (http://www.oneinsane.org/kf5jra). When I installed it I set it up so that 
> my offsets CW/CCW are set at 180 and true north should be my zero in the 
> middle of the ham IV rotation.
>
> Somehow I have gotten the rotor stuck/wedged at the CW 180 stop and no 
> matter what I do it aint moving. I can hear the brake solenoid 
> disengage/engage when I attempt to move int but get no movement. With my 
> installation be a little over three and half years old’ could something 
> have failed already? All meter readings are within specs so cable is good. 
> Is it that with the cold weather ( I live in Loveland, CO (7 miles south 
> of Fort Collins & 55 miles north of Denver)) that I should just wait till 
> I get a decent warm spell and part that this is just a frozen due to the 
> cold.
>
> Any ideas or assistance is much appreciated.
>
>
>
>
> --
> 73 de KF5JRA
> Ron
> kf5jra at oneinsane dot org
>
> _______________________________________________
>
>
>
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-- 

Kim Elmore, Ph.D. (Adj. Assoc. Prof., OU School of Meteorology, CCM, PP
SEL/MEL/Glider, N5OP, 2nd Class Radiotelegraph, GROL)

/"In theory there is no difference between theory and practice. But, in
practice, there is." //– Attributed to many people; it’s so true that it
doesn’t matter who said it./

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