[UK-CONTEST] ANTENNA SUPPORT

[Rob - G4LMW]

Don

See Steve W's "In Practice" article ("OVER THE TOP") on p39 of the April 
2009 RadCom

73, Rob
G4LMW
http://www.G4LMW.co.uk



----- Original Message ----- 
From: "Don Beattie" <g3ozf at btinternet.com>
To: "Uk-Contest at Contesting.Com" <uk-contest at contesting.com>
Sent: Wednesday, June 24, 2009 11:00 AM
Subject: [UK-CONTEST] ANTENNA SUPPORT


> Slightly OT, but I guess there's someone here who knows the answer.
>
> I am planning to try putting the centre of a wire dipole significantly 
> above the rotator/beam on a tower. I plan to fit a fairly long stub mast 
> above the beam, and to attach the centre of a wire dipole to the top of 
> it. The wire should clear the beam's elements whatever direction it is 
> pointing as the ends of the dipole are quite high. This should put the 
> centre of the dipole at about 90ft.
>
> What's the best way of attaching the dipole to the top of the stub mast, 
> so that the beam can still be turned without it winding-in the halyard ? 
> Do I need to find a proper slip bearing, or is there a sneaky and cheaper 
> way ? Or do I just leave 30 cm of slack halyard between the pulley and the 
> dipole centre insulator, and let the thing wind/unwind as the beam turns ?
>
> Thanks
>
> 73
>
> Don, G3BJ
>
>
> _______________________________________________
> UK-Contest mailing list
> UK-Contest at contesting.com
> http://lists.contesting.com/mailman/listinfo/uk-contest