Is it possible to make a mobile 10m antenna that is
physically shorter than a 1/4 wave whip yet will
preform better than a 1/4 wave whip?

--
73's es gd dx de Ken KGØWX
Grid EM17ip, Flying Pigs #1055,
Digital On Six #350,
List Owner, Yahoo! E-groups:
VX-2R & FT-857

On Wed, 13 Apr 2005 11:53:52 -0500, "Ken Bessler"
wrote:

Is it possible to make a mobile 10m antenna that is
physically shorter than a 1/4 wave whip yet will
preform better than a 1/4 wave whip?

Hi Ken,

If you push more power through it.

Aside from that, how much better is better? If you start out with a
miserable quarterwave and replace it with a sterling (pun may be
intended) shorter antenna; then, yes, the shorter one "may" be better.

Why don't you first start by defining what efficiency your quarterwave
whip exhibits? You may be surprised how hard it is to "better."

73's
Richard Clark, KB7QHC

NO

"Ken Bessler" wrote in message
news:A8c7e.14295$up2.5543@okepread01...
Is it possible to make a mobile 10m antenna that is
physically shorter than a 1/4 wave whip yet will
preform better than a 1/4 wave whip?

--
73's es gd dx de Ken KGØWX
Grid EM17ip, Flying Pigs #1055,
Digital On Six #350,
List Owner, Yahoo! E-groups:
VX-2R & FT-857

Fred W4JLE wrote:

"Ken Bessler" wrote:
Is it possible to make a mobile 10m antenna that is
physically shorter than a 1/4 wave whip yet will
preform better than a 1/4 wave whip?

NO

I just ginned up a 5 foot tall antenna with 3.8 dBi gain. That's
half the height and considerably more gain than a 1/4WL whip.
With more time, I could do better.
--
73, Cecil http://www.qsl.net/w5dxp

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I am sure you did Cecil, however I understood the question to be a shorter
single element mobile antenna. I suspect he was looking at the shorter
loaded antennas with gains far in excess of your paltry 3.8 dBi. See any CB
site for examples.

One loaded antenna is touted as having 7.2 dB gain.
but then again it was a "super coil" rated for 10,000 watts.

Other than that, "The angels have left the pinhead".


"Cecil Moore" wrote in message
...
Fred W4JLE wrote:

"Ken Bessler" wrote:
Is it possible to make a mobile 10m antenna that is
physically shorter than a 1/4 wave whip yet will
preform better than a 1/4 wave whip?

NO

I just ginned up a 5 foot tall antenna with 3.8 dBi gain. That's
half the height and considerably more gain than a 1/4WL whip.
With more time, I could do better.
--
73, Cecil http://www.qsl.net/w5dxp

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Fred W4JLE wrote:
I am sure you did Cecil, however I understood the question to be a shorter
single element mobile antenna.

Well, that's why I asked for a definition of "better".
And he didn't say a "single element" was better so
a 10-element beam might be the way to go. :-)
--
73, Cecil http://www.qsl.net/w5dxp


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"Cecil Moore" wrote in message
...
Fred W4JLE wrote:
I am sure you did Cecil, however I understood the question to be a
shorter
single element mobile antenna.

Well, that's why I asked for a definition of "better".
And he didn't say a "single element" was better so
a 10-element beam might be the way to go. :-)
--
73, Cecil http://www.qsl.net/w5dxp


Sorry - let me elaborate *why* I posted the question.

I wanted to know if it was possible for any single mobile
antenna less than a 1/4 wave could outperform a 10m 1/4
wave whip. Like for example a loaded 5/8 wave whip.

As I understand it no whip less in size than a 1/4 wave
can be more efficiant than it's larger cousin due to resisitave
losses in the loading coil.

Right or wrong? Long answer is OK. :-)

--
73's es gd dx de Ken KGØWX
Grid EM17ip, Flying Pigs #1055,
Digital On Six #350,
List Owner, Yahoo! E-groups:
VX-2R & FT-857

On Wed, 13 Apr 2005 12:49:29 -0500, Cecil Moore
wrote:


I just ginned up a 5 foot tall antenna with 3.8 dBi gain. That's
half the height and considerably more gain than a 1/4WL whip.
With more time, I could do better.

What is the dBi gain of a 1/4 ground plane?


--
73 for now
Buck
N4PGW

Buck wrote:
What is the dBi gain of a 1/4 ground plane?

Rule of thumb: zero dBi
--
73, Cecil, W5DXP

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On Mon, 18 Apr 2005 10:49:31 -0400, Buck wrote:
What is the dBi gain of a 1/4 ground plane?

Hi Buck,

-0.22dBi to +2.2 dBi depending on the proximity of ground and the
level of screening with radials.

73's
Richard Clark, KB7QHC