Yes I built my own and located the devices in the box at the bottom of the
tower and in my SPG box at the shack wall.. I am using 19V MOV's for the
12V lines and I have some 65V MOV's for the 45V DC rotator motor lines. I
put a 0.1uF cap across the MOV's. If you are interested I can dig out some
Yes it is a lot cheaper to build your own with the MOV's costing around 50
cents or so.
----- Original Message -----
From: "Mickey Baker" <firstname.lastname@example.org>
Sent: Friday, 08 October, 2010 12:14 AM
Subject: [TowerTalk] Protecting Control Lines
> Are the devices sold for "lightning protection" of rotator and control
> all simply gap+MOV protectors? Perhaps GDT?
> Is one better than another? I respect your opinion, but do you have a
> technical, non-anecdotal reason to believe which is better?
> They seem damn expensive for what they are, so I'm considering building
> Has anyone built a protection block?
> I found these resettable fuses/MOVs while shopping to build one:
> Anyone used these?
> (I don't have any relationship with any component manufacturer - this
> a plug.)
> Mickey N4MB
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