Sorry looking to match at 1845...
On 22 Oct 02, at 22:44, n4kg@juno.com wrote:
> I *assume* you mean an 80 FOOT trylon self supporting tower.
>
> You neglected to indicate on what FREQUENCY you are trying
> to match the tower.
>
> It should make a GREAT shunt vertical for 160M where the
> top loading should be close to an electrical Quarter Wavelength.
>
> Matching on 80M will be 'tricky' (i.e. I've never actually tried to
> match a grounded HALF WAVE vertical).
>
> Tom N4KG
>
> On Tue, 22 Oct 2002 "Jim Johnson - KC4HW" <jim@kc4hw.net> writes:
> > Hello Everyone,
> >
> > Need a little help with shunt feeding a 80 trylon self supporting
> > tower. On
> > this tower there is a 4 elements for 20m on 36' boom with 4 elements
> >
> > interlaced for 15m. At 87' is 5 elements for 10m on 24' boom and at 95'
> > is 2 element on 40m.
> >
> > The shunt wire (12 gauge) is at 65' space approximately 4' from the
> > tower. Have determined that the approximately capacitance at the feed
> > point is 280pf, however the lowest SWR appears to be about 3 to 1.
> >
> > Can anyone suggestion something to improve this situation?
> >
> > Thanks!
> >
> > Jim Johnson, KC4HW
> > Melbourne, Florida
> > http://www.kc4hw.net
> > DXCluster RF Connection: 144.95
> > Telnet://kc4hw.homelinux.net:8000
> > _______________________________________________
> > AN Wireless Self Supporting Towers at discounted prices,
> > See http://www.mscomputer.com
> >
> > Wireless Weather Stations now $349.95. Call Toll Free,
> > 888-333-9041 for additional information.
> > _______________________________________________
> > Towertalk mailing list
> > Towertalk@contesting.com
> > http://lists.contesting.com/mailman/listinfo/towertalk
> >
>
>
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Jim Johnson, KC4HW
Melbourne, Florida
http://www.kc4hw.net
DXCluster RF Connection: 144.95
Telnet://kc4hw.homelinux.net:8000
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