Hello Guy -
You don't want a mast mount for your rotor. Use a couple pieces of
angle coming out from a corner of the tower and mount it directly on
them. It's best to do it a a section joint using heavier horizontal
braces; G22, G23 G24 - and use a pair of G25s for your rotor mount.
Put another one at the next higher section joint, and mount your
thrust bearing there. I can send you pictures if you like. You will
get almost 300 degrees of rotation this way.
If you really want a lower mast mount for the Ham IV, I have a couple
sitting here I will gladley sell - but I don't recommend it for this.
73,
Mike W3MC
On Fri, Apr 29, 2011 at 00:25, Guy Molinari <guy_molinari@hotmail.com> wrote:
>
> Anyone have any recommendations for mounting a Ham IV atop a 2" mast section.
> I'm building a standoff mount on one of my towers for a 3 element SteppIR.
> I've got some 2" angle iron that I'm going to bolt in place of 2 sets of
> steps on my AB-105 tower. This will allow for about a 4' piece of mast held
> about 10-12" from the tower.
>
> Now I just need to track down a mount for the Ham IV. I should get about
> 100 degrees or so of azimuth. Together with the 180 feature of the SteppIR
> it should do the trick for JA/CA mults and for keeping the US off my QRG when
> I've got the big boys pointed at EU.
>
> Any thoughts?
>
> 73,
> Guy, N7ZG
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