At 02:23 11/10/2007, George Wallner wrote:
>Chris,
>
>Dry coral sand is a poor conductor. ...... It appears that the dry
>sand, a good insulator, is "floating" on salt water saturated sand,
>which seems to be a good conductor. The ratio of the two may
>determine whether a Beverage works or not. ....... Putting up a
>Beverage, however, is relatively easy, so no matter what the results
>(or theory) it should be tried because it may work in your specific
>environment (or not).
>
>George
>AA7JV
George and others,
Agree. We concluded that the coral sand was sufficiently poor to
allow the beverage to work and as others have said, its the soil
under the beverage that is important. The question we did not know
before we tried it was how low down the water table was - or indeed
how low down it needed to be so as not to impact performance. We put
up the beverages first but also had K9AY's and a 3-loop array built
by Eric, K3NA with a back up plan of other antennas if we still were
deaf. In the end QRN from African thunderstorms dominated the rx
(and, of course, tx) antennas.
73 Chris G3SVL
_______________________________________________
Topband mailing list
Topband@contesting.com
http://lists.contesting.com/mailman/listinfo/topband
|