[TowerTalk] HF Mobile Tilt-Over Base
jimlux
jimlux at earthlink.net
Sun Mar 22 07:48:57 PDT 2009
Terry G. Glagowski / W1TR wrote:
> Has anyone ever seen a product that is a motorized mechanism to tilt over the
> base of a mobile antenna for HF such as a screwdriver type antenna? I've seen
> the ones that Diamond has for UHF/VHF, but I would like to find such a heavier
> duty device for something like a High Sierra SideKick screwdriver antenna.
>
I haven't seen one specifically designed for the application, but one
might be able to repurpose a satellite elevation rotor?
There's a fair amount of installation specific stuff you're going to
have to do, so maybe just buying an appropriate gearhead motor and using
that would be the way to go. something like 15-20 RPM might be about right.
You could also use a satellite dish actuator (linear leadscrew), but
that seems a bit overkill for something like a screwdriver antenna. You
could improvise using a second mechanism like that in the screwdriver
antenna (threaded rod, and follower nut on the antenna.
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