>
> I have been investigating what appears to be binding of my antenna system
> during portions of the rotation. The mast I am using is 48mm and the Ham IV
> rotator shims are 2mm thick. There are two shims that are between the mast
> and the back of the rotator socket. The clamping plate doesn't have any
> shims - The two shims are on each side of the back face of the rotator
> socket. There is a thrust bearing as well but I took the bolts out last
> fall to see if that would solve my problem then but it didn't.
>
> So the centering is off by 2mm.??....My inclination is to put 4mm shims in
> place of the 2mm shims at the back of the rotator socket but maybe thats not
> right. ...is it neccessary to have the same thickness shims (2mm) under the
> clamping plate as well?...can't see how that helps with centering? . The
> tower is a Hy Gain HG52SS.
>
> 73 Frank VO1HP
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