Topband: Lesson Learned & Coax for 2-wire beverage
John Rogers
johnr1g3pqa at onetel.com
Tue Nov 25 08:08:24 EST 2008
>Out working on Beverage #2 the EW unit I shortened up the
>vertical downlead wires for the control box on Beverage #1 the NS unit
>to about 6 inches. Tonight at my SS ES1WN had maybe 15dB more FB than
>any signal ever I heard from Europe.
>There's something, nay, a lot! to keeping the vertical downleads as
>short as possible or even eliminating them.
>73 Art
Could the reactance of a 5ft earth lead (albeit small) be unbalancing the
feed and adversely affecting termination in reverse direction?
Results with 2-wire beverages using balanced line appear to be variable and
unpredictable. The theory works but difficult in practice. In general ,
perhaps because of the problems, would it not be better to use some light
coax (e.g. CATV steel coax) as the 2-direction beverage wire?
73
John
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