I have put the mesh radiator on my page
Nothing more to add, you have it all.

Unwin Antennas

Art Unwin wrote:
I have put the mesh radiator on my page
Nothing more to add, you have it all.

Unwin Antennas

Zero is still zero.

tom
K0TAR

Art Unwin wrote:
I have put the mesh radiator on my page
Nothing more to add, you have it all.

Unwin Antennas

And the Unwin Antennas is a nice touch.

"Unwin Antennas, where nothing is what it claims to be"

tom
K0TAR

On Oct 10, 9:46*am, tom wrote:
Art Unwin wrote:
I have put the mesh radiator on my page
Nothing more to add, you have it all.

Unwin Antennas

And the Unwin Antennas is a nice touch.

"Unwin Antennas, where nothing is what it claims to be"

tom
K0TAR

Tom
It was not so long ago you were whinging because art had not
told you how to build his antenna, I suggest you build one and find
out if it works before you
rubbish all, stop acting like the asshole you are, either you are
interested or you are not, make up your mind. Your knee jerk posts are
getting booring.

Jaro

jaroslav lipka wrote:
On Oct 10, 9:46 am, tom wrote:
Art Unwin wrote:
I have put the mesh radiator on my page
Nothing more to add, you have it all.
Unwin Antennas
And the Unwin Antennas is a nice touch.

"Unwin Antennas, where nothing is what it claims to be"

tom
K0TAR

Tom
It was not so long ago you were whinging because art had not
told you how to build his antenna, I suggest you build one and find
out if it works before you
rubbish all, stop acting like the asshole you are, either you are
interested or you are not, make up your mind. Your knee jerk posts are
getting booring.

Jaro

So where are these antennas? I haven't seen a link.

tom
K0TAR

On Oct 10, 12:04*pm, tom wrote:
jaroslav lipka wrote:
On Oct 10, 9:46 am, tom wrote:
Art Unwin wrote:
I have put the mesh radiator on my page
Nothing more to add, you have it all.
Unwin Antennas
And the Unwin Antennas is a nice touch.

"Unwin Antennas, where nothing is what it claims to be"

tom
K0TAR

Tom
* * * It was not so long ago you were whinging because art had not
told you how to build his antenna, I suggest you build one and find
out if it works before you
rubbish all, stop acting like the asshole you are, either you are
interested or you are not, make up your mind. Your knee jerk posts are
getting booring.

Jaro

So where are these antennas? *I haven't seen a link.

tom
K0TAR

Tom
And you call yourself intelligent, the fact you even asked the
question shows what a dipstick you are.
Read and absorb.

Jaro

On Oct 9, 7:31*pm, Art Unwin wrote:
I have put the mesh radiator on my page
Nothing more to add, you have it all.

Not really.

For examples, over a given r-f bandwidth:

- Radiation pattern throughout the free-space radiation sphere?
- Free-space gain with respect to an isotropic radiator (dBi) or a
matched, 1/2-wave dipole (dBd)?

Note that any particular r-f termination may have low feedpoint VSWR
over a considerable bandwidth, for some reference impedance value --
but that does not necessarily make it a useful antenna (think: dummy
load).

RF

In my previous post in this thread I asked about the gain and pattern
of this mesh antenna. Hopefully the inventor will respond when he is
able.

But being curious and not wanting to wait, I went back to his previous
thread about small antennas, and modeled what he posted there -- just
to learn what NEC would show for those parameters.

The results are given in the link below.

The h-plane azimuth gain of this mesh antenna is far from uniform, and
its 0.0134 + j85.45 ohm feedpoint impedance is very unfriendly --
though the frequency is centered in Art's stated VSWR bandwidth.

Even if this feedpoint Z was perfectly matched there to a 72 ohm
balanced transmission line, this mesh antenna would still be a poor
radiator compared to a 1/2-wave dipole.

http://i62.photobucket.com/albums/h8...sh_Antenna.jpg

RF

jaroslav lipka wrote:

Tom
And you call yourself intelligent, the fact you even asked the
question shows what a dipstick you are.
Read and absorb.

Jaro

So then, based on all you've learned from Art, why don't you give a
brief description of an antenna based on Art's principles. Please give
some dimensions.

tom
K0TAR

jaroslav lipka wrote:
Tom
And you call yourself intelligent, the fact you even asked the
question shows what a dipstick you are.
Read and absorb.

Jaro

Oh, and let's make it a nice simple antenna for say 40m.

tom
K0TAR