Posted by
Bill Coleman-2 on
Dec 08, 2005; 2:50am
URL: http://elecraft.85.s1.nabble.com/Clever-antenna-tuning-ideas-wanted-tp384403p384410.html
On Dec 7, 2005, at 4:34 PM, Darwin, Keith wrote:
> My antenna is similar. 28.5' tall, ground mounted over twelve 28'
> long
> radials. Fed with 30 feet of RG-213. With a tuner the system works
> well enough on 40, 30, 20, 15. 80 Meters is the pits. Dummy Load
> City!
One idea - there was an article in QST some years ago about using a
trap to make an inverted L. Fellow had an 80m vertical. He added a
trap for 80m and then ran a wire out horizontally.
You could probably do the same thing for 40m/80m. One pretty
foolproof way to make a trap is to wind coax on a PVC form. There's
even a freeware program out there to compute the length of the coax -
Coaxtrap. Google for it.
If you're going to make 80m a habit, some 50-60 foot radials would be
nice. K2VCO should also consider some longer radials.
Bill Coleman, AA4LR, PP-ASEL Mail:
[hidden email]
Quote: "Not within a thousand years will man ever fly!"
-- Wilbur Wright, 1901
_______________________________________________
Elecraft mailing list
Post to:
[hidden email]
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft
Help:
http://mailman.qth.net/subscribers.htmElecraft web page:
http://www.elecraft.com