[UK-CONTEST] Aerial Mounting?

[Paul Beecham]

Hi all,
Well I managed to put up a 4 ele MonstIR SteppIR on a p80 while tilted
by putting the boom on the tower and building it almost flat
horizontal. The trick is to leave the boom clamps loose so that when
you winch the tower upright the aerial naturally turns and stays
horizontal as the tower comes more vertical .
When the tower is upright tighten the boom clamp off.
If a long boom is used like on the MonstIR remember to install a
temporary boom support system that will allow the aerial to rotate and
still be supported. Basically the temporary one is at 90deg. to the
stock one. I used a piece of scaff pole and nylon rope. As the boom
rotates the weight of the boom is transferred from the tempory support
to the proper one. The rope stays on the boom but you can remove the
scaff pole when in the desired position.
Utmost care must be taken as this is a solution but in an ideal world
a crane would be safer.

73 Paul G6PZ
On 5/16/08, David Barber <david.barber at dbelectronics.co.uk> wrote:
> Is the boom round or square?
>
> If round, find a piece of tube (sleeve) with an internal diameter to slip
> over boom.
>
> Keep boom in required position with a jubilee clip on boom at either end of
> sleeve.  Fix sleeve to mast.
>
> To rotate beam either coil rope round boom and drop down in a long loop,
> ensuring it can't slip, so that when raised rope can be pulled to rotate
> beam and secured to hold beam in position.
>
> Or
>
> Make up an "arm" with a cross bracket and short length of tube.  Loop rope
> through tube and again pull to rotate beam.
>
> Both may need some form of physical stop.
>
> Neither suitable for a permanent install.
>
>
>
>
> -----Original Message-----
> From: uk-contest-bounces at contesting.com
> [mailto:uk-contest-bounces at contesting.com] On Behalf Of Tony Bettley
> Sent: 16 May 2008 17:20
> To: uk-contest at contesting.com
> Subject: [UK-CONTEST] Aerial Mounting?
>
> I want to put a 20m 5 ele monobander on a trailer tower one weekend. I have
> done it before with some difficulty but this time I want to try erecting it
> initially with the elements parallel to the main part of the tower which
> should be much simpler. What I am after is some ideas for a hinge or swivel
> mechanism that will allow the aerial to be turned to make the elements
> horizontal once the tower is in the vertical position.  Any ideas please,
> must be some contesters out there that have done this?    Tony G4LDL
>
>
>
>
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