"Mike Coslo" wrote in message
. ..
JJ wrote:

Dick Carroll wrote in message ...

Don't pay them too much attention, Bruce. Neither JJ nor TwIT realizes
they were NOT using a 1/4 wave dipole. If they had been, neither would
have gotten a signal out of the back yard.

If the *antenna system* took a load and performed under the
circumstances
they describe, then both JJ and TwIT were loading the outer surface of
the
coax shield, and *that* was doing a major part of the radiating.

Of course when one side of a 1/4 wave dipole is attached to the braid
of the coax with no decoupling, then the dipole is no longer a 1/4 wave
dipole! What it becomes then depends entirely on
the feedline length as well as other local factors. So then it will
probably take some load, and maybe even load up to full supplied power,
as JJ described. At that point it's a crap shoot-you don't know *what*
you've got! For sure it ISN'T a 1/4 wave dipole! But the uninformed will
think their "1/4 wave dipole" worked just fine!

If JJ had used a good isolation choke or 1:1 balun to decouple the coax

from the 40 meter dipole at the feedpoint the tuner would have balked
big

time, and all that RF would have bounced around inside it, and made
itself known quite loudly in the form of arcs.


The 40 meter dipole does have an HF 1:1 balun at the feedpoint.



The KWM-2 finals might
have sparked a bit, too.


Why? As far as the M-2 was concerned, it was seeing a good match,
courtesy
of the tuner (that is one function the tuner performs in case you didn't
know). There was no arcing anywhere...have no idea what the swr was on
the
feedline, but that is not the point. The point is, I did get a signal
out
and made contacts, all with good readability on both ends. I have never
claimed this would make a good antenna or that one should operate such,
just
proved that it can work to some extent. I thought you were smarter than
dannyboy but guess not.

I'll admit stupidity if you can explain how and why that antenna worked
as a quater wave dipole.

I already presented some fairly comprehensive data on why it wouldn't.
That was pretty basic stuff.

That a quarter wave dipole antenna would work is fairly extraordinary.

Present your evidence and your theory/rationale.

- Mike KB3EIA -


Probably for the same reason loading up house plumbing will work, or loading
up a coat hanger, or whatever. With a tuner, and with other apparatuses in
use or not, coupling--whatever you want to call it--if a signal gets out, it
gets out and that is all that counts *sometimes.*

Kim W5TIT