[Hallicrafters] Re: Dipole antenna

Jim Brannigan jbrannig at optonline.net
Tue Feb 22 18:52:43 EST 2005


This will be an interesting thread!!!

My Dipole interest is for 80 and 40Meters, I have a beam for the other
bands.
At this QTH I have tried (all in an inverted Vee configuration, hung off the
tower):
A 40-80M trap Dipole with balun
80M Dipole with homemade open wire line on standoffs (fed by a real balanced
tuner, not a 4:1 balun)
A G5RV (no balun) and T-match tuner.

The trap Dipole was terrible.
The open wire line was a pain to deal with, but worked OK. The plug-in coils
in the tuner were a nuisance.
The G5RV was the best.

For the 80 and 40M part of my 5BDXCC I used the G5RV and a Butternut
Vertical

At 80-40M coax losses are negligible.  I saw no difference between the coax
to ladder line G5RV and the open wire line Dipole.

Let it begin.......

Jim


> My advice - think ladder line and a balanced tuner.  Its the only way to
> fly.  Stop warming your coax and heat the ionosphere instead!
>
> -Rich
>
> Waldo Magnuson wrote:
> > Pete Markavage wrote:
> >  "Also, remember that, like a dipole, an inverted vee
> > is a balanced antenna. If you feed it with coax, you should hang a 1 to
1
> > balun at the feed point (either off the shelf product or home-made)."
> >
> > To: Pete (and other antenna knowledgeables) , I have a question:
> > My high (75 feet up)  40 meter dipole antenna is connected directly to a
> > coax (per ARRL handbook) instead of having a balun between the antenna
> > and coax.  I could build (or buy) a 1:1 balun but am I likely to see any
> > difference?  Thanks.
> > 73,  Skip Magnuson  W7WGM




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