First thought is, don't shake the tower! :^)
On second thought this is a common occurance for telescoping towers in my
experience. I'm not familiar with the quality or construction of your tower
however, I have been able to reduce the noise two ways:
first, bond the tower and trailer together AND to earth whenever you erect it.
If you "float" the tower and trailer on their rubber tires the assembly can
become energized by the radiated RF energy and thus emit RF noise themselves.
Second, I grease the travelling surfaces of my tower sections with a conductive
grease, preferably waterproof as well so it doesn't immediately wash off with
the first rain or morning dew.
Beyond that I would say try to identify the offending components of the tower or
trailer and focus on those especially.
Gary
IM Ashford wrote:
> Has anyone experience with eliminating noise fom the metalwork of a wind up
> tower?
>
> Our tower has 4 sections and is of the type where all sections raise at once
> with a single cable pulley system.
> The Machine is a Nokia BRS150 using a Sinclair Duplexer on 145.7625/1625
> Antenna is Jaybeam Folded Dipole with its own RG214 tail into 60 ft of
> LDF450.
>
> When you shake the trailer mounted tower there is severe crackling on weak
> signals. The three stays have been
> tightened up as far as possible.
> Any Ideas on how to kill this noise guys?
>
> Ian Ashford
> G8PWE
> Central England
> UK
>
>
> Yahoo! Groups Links
>
>
>
>
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