Cecil Moore wrote:
http://www.w5dxp.ez/coil512.EZ

Sorry, obviously should have been:

http://www.w5dxp.com/coil512.EZ

Look at the "Load Dat" to see the actual phase shift
through that coil.
--
73, Cecil http://www.w5dxp.com

Cecil Moore wrote:

Roy previously posted my private email without my permission
so turn about is fair play.

One thing we are ALL are in agreement with, and I say this with complete
confidence, well I think, anyway, we'd all show up to KILL spammers!

Ya'd think they'd be ashamed ...

Regards,
JS

On 3 Dec, 19:13, John Smith wrote:
Yuri Blanarovich wrote:
...
Yuri K3BU.us

WOW! What a work of art, what did you title this one, "Yuri Sucks Again?"

JS
Re
Yuri K3BU. "us"
He is implying that he is a US citizen and is not visiting from
Canada.
That is really hard to believe. I heard he only comes to the States
to work as Santa Claus at the american malls.
The language he probably uses is ....Ho, Ho, Ho, Santa's full of
"sheet"!
There is no way that Yuri could possibly be nice or clean mouthed,
even to children,no matter what the season .

Cecil Moore wrote:

Cecil:

You are one of the few here which has my respect ... tread carefully ...
love your arguments ...

Why can't we all just get along? ;-)

Warm regards,
JS

Cecil, W5DXP wrote:
"A 1/4WL monopole over ground is known to be 90 degrees long. The phase
of the current changes by only a few degrees from feedpoint to tip. How
much phase shift (delay) in the current would we measure in 30 degrees
of a monopole? Answer: Only one or two degrees. Why is there only a
small number of degrees of phase shift (delay) in the current in 30
degrees of monopole? Because it is "standing-wave current" that is being
used for the measurement and the phase barely changes over the entire
monopole length."

The current distribution and phase along a 1/2-wave dipole have the same
characteristics except that the monopole`s image exists in the other
half of the dipole. Figure 14-2 on page 464 of the 3rd edition of Kraus`
"Antennas" shows the absence of significant phase change just as Cecil
describes above.

Then, if you examine Figure 14-12 on page 474, you`ll notice the solid
lines of the traveling wave progressing in opposite directions versus
the stair step dashed lines representing the standing wave abruptly
shifting its phase by 180 degrees at 1/2-wave intervals. This is
standard transmission line-antenna knowledge and supports Cecil`s
statement above.

You can take Kraus to the bank. I don`t know what all the fuss is about.

Best regards, Richard Harrison, KB5WZI

Cecil Moore wrote:
K7ITM wrote:
Others are welcome to ponder all that while Cecil tries to unstick
himself from his tarbaby.

It's your tarbaby, Tom, not mine. When you can tell me
what's the difference between a duck, I will tackle your
equally ridiculous questions.

Perhaps, said in olde' english it would gain more of your
interest/attention--"Shakespearian terms?" rofol

Cecil, don't take the whole world seriously, where would be the fun?

JS

Correction:

Roy Lewallen wrote:
. . .
Both NEC and EZNEC provide simple ways of generating a helical model.
. . .

NEC-4 has a built-in method for generating a helix (the GH 'card'), but
NEC-2 doesn't. I wouldn't be surprised, though, if the feature hasn't
been added to some versions of NEC-2 floating around, since the basic
programming for that function isn't difficult to do.

Roy Lewallen, W7EL

Roy Lewallen wrote in
:

....
as a helix. There are some caveats as there always are with any
modeling process, particularly:
....

Roy,

Aren't limitations on segment size an issue, especially with small diameter
coils?

Can NEC model a typical HF helically loaded mobile whip reasonably, sy 16mm
diameter, 1.2m long with variable pitch progressing to close spaced turns
on the top 30% or so?

I suspect NEC is not a magic bullet either.

Owen

Roy Lewallen wrote:
Correction:

Roy Lewallen wrote:
. . .
Both NEC and EZNEC provide simple ways of generating a helical model.
. . .

NEC-4 has a built-in method for generating a helix (the GH 'card'), but
NEC-2 doesn't. I wouldn't be surprised, though, if the feature hasn't
...
Roy Lewallen, W7EL

The "paid" versions contain this, in a usable fashion, and,
begrudgingly, are worth it ... nuff said.

Regards,
JS

Owen Duffy wrote:

[pretty good stuff] (if you can see the above, find out how to subscribe
to a free news server)

And, good/free software written by amateurs for amateurs, and in the
free spirit of "elmering":

http://mmhamsoft.amateur-radio.ca/mmana/index.htm

Try it, you'll like it (mikee did! :-D )

Regards,
JS