Try this ...

http://farside.ph.utexas.edu/teachin...es/node94.html

This is one of a series of lectures by a prof at Texas Uni.

In fact, if you go right back to the home page of
http://farside.ph.utexas.edu/teaching,
this leads to a most excellent revision of the necessary EM theories, and,
briefly
glancing thereto, the post grad stuff even exceeds my current interest and
knowledge.

I'm fairly sure now that this area is where I came across the governing
formula that I
alluded to recently in this NG when doing my own revision previously in
2005, although
the URLs and lecture node numbers have changed since then.

On 10/22/2014 5:13 AM, gareth wrote:
Try this ...

http://farside.ph.utexas.edu/teachin...es/node94.html

This is one of a series of lectures by a prof at Texas Uni.

In fact, if you go right back to the home page of
http://farside.ph.utexas.edu/teaching,
this leads to a most excellent revision of the necessary EM theories, and,
briefly
glancing thereto, the post grad stuff even exceeds my current interest and
knowledge.

I'm fairly sure now that this area is where I came across the governing
formula that I
alluded to recently in this NG when doing my own revision previously in
2005, although
the URLs and lecture node numbers have changed since then.

Obviously, none of this is new. It states in the article that the short
antenna is inefficient due to the wire (ohmic) resistance swamping the
radiation resistance. Your first post on this subject did not include
wire resistance in your statement that short antennas are inefficient,
which is why people jumped on that statement.

If you include wire resistance, yes, a short dipole is less efficient
that a full-sized dipole (if you can manage to get the power into it,
which is a different problem). Note that a short antenna, properly
constructed with, say, 4-inch copper pipe will be just about as
efficient as one with #12 copper wire.

Try it, please. Make the measurements. Record what you get and let us
know. We are hungry for additional knowledge.

"gareth" wrote in message ...

Try this ...

http://farside.ph.utexas.edu/teachin...es/node94.html

This is one of a series of lectures by a prof at Texas Uni.

In fact, if you go right back to the home page of
http://farside.ph.utexas.edu/teaching,
this leads to a most excellent revision of the necessary EM theories, and,
briefly
glancing thereto, the post grad stuff even exceeds my current interest and
knowledge.

I'm fairly sure now that this area is where I came across the governing
formula that I
alluded to recently in this NG when doing my own revision previously in
2005, although
the URLs and lecture node numbers have changed since then.

When I get time, I'll browse through the links.

However, back to your original assertion that your theory has short antennas
as being inefficient compared with longer antennas (I'm assuming you are
talking half wave dipoles and such).

If 10 watts is delivered to a short antenna, where does it go if it is not
radiated just as well as 10 watts delivered to a long antenna?

"Wayne" wrote in message
...

If 10 watts is delivered to a short antenna, where does it go if it is not
radiated just as well as 10 watts delivered to a long antenna?

How are you going to deliver that 10 watts? By feeding with 100 Watts?

On 10/22/2014 10:05 AM, gareth wrote:
"Wayne" wrote in message
...

If 10 watts is delivered to a short antenna, where does it go if it is not
radiated just as well as 10 watts delivered to a long antenna?

How are you going to deliver that 10 watts? By feeding with 100 Watts?

Oops! Is that part of the problem? You never said matching was involved.
Please get your story straight.

Tell us your requirements. Using real wire? What diameter? What
material? What length? Is feeding the antenna part of the problem?

What the hell are you seeking?

On 10/22/2014 11:15 AM, John S wrote:

What the hell are you seeking?

Drama

--

Rick

In message , rickman
writes
On 10/22/2014 11:15 AM, John S wrote:

What the hell are you seeking?

Drama

And, of course, confrontation.
--
Ian

On 22/10/14 16:15, John S wrote:
On 10/22/2014 10:05 AM, gareth wrote:
"Wayne" wrote in message
...

If 10 watts is delivered to a short antenna, where does it go if it
is not
radiated just as well as 10 watts delivered to a long antenna?

How are you going to deliver that 10 watts? By feeding with 100 Watts?

Oops! Is that part of the problem? You never said matching was involved.
Please get your story straight.

Tell us your requirements. Using real wire? What diameter? What
material? What length? Is feeding the antenna part of the problem?

What the hell are you seeking?


He wants a row, as always. Why else is he hurling abuse and ignoring
helpful posts?

That is what he has always done.

"Brian Reay" wrote in message
...
He wants a row, as always. Why else is he hurling abuse and ignoring
helpful posts?
That is what he has always done.

You are the one who is hurling abuse. For example, all of your posts to
this thread so far are personal attacks on me.

En el artículo , John S
escribió:

What the hell are you seeking?

Attention.

He's a very sad, demented attention-seeking troll, as evidenced by the
Google archive of his posts dating back to 1997. What's striking about
them is that they haven't changed much in that time.

--
(\_/)
(='.'=)
(")_(")