Just a little side comment to this discussion;
Brad was considering the Sigma80, a center-fed vertical **dipole** for
80 meters, which does not need any form for counterpoise or radial
system. In order to match Force12's specs, I believe a shortened GP
would hardly do the job. A full size homebrew vertical dipole needs a
mounting point some 40 meters (120+ feet) above ground, with feeding
cable perpendicular to the dipole wire.
I have used a 5 band Force12 Sigma5 antenna since September. Easy
mount on the ground, no radials, partly surrounded by trees and our
house, and I am very pleased with its DX achievements.
73
Chris / LA8OM
______________________________________________________
Sjekk snørapporter...
fra 500 ski-destinasjoner i Europa
på http://no.snow.yahoo.com/
________________________________________________________________________
Where do you get ICE bandpass filters & beverage matching boxes? The
same place that pays for the hosting of this list: The eHam Store.
Order online at http://store.eham.net.
-----------------------------------------------------------------------
-----
FAQ on WWW: http://www.contesting.com/FAQ/towertalk
Submissions: towertalk@contesting.com
Administrative requests: towertalk-REQUEST@contesting.com
Problems: owner-towertalk@contesting.com
|