10 Meter Vertical
 

Make a good 10 meter vertical from CB Antenna, Solarcon Antron A-99
Vertical, just out of the box, never used. 9.9 (sic) dBi Gain. New
price $89.95 plus shipping. Just found the GPK-1 radial kit (in the
box) for the A-99, new cost $52.95 plus shipping. 2,000 Watt Rated,
18-29 MHz Optimal Range can be used for Amateur Band 10 Meters (cut
11.5" of the top radiator). Female UHF Coax Connection, Height: 17.5'
Feet Tall, No Ground Needed . New package deal both for $90.00 Plus
shipping. or Call (757) 487-0357

10 Meter Vertical
 

Sonny Hood wrote:
Make a good 10 meter vertical from CB Antenna, Solarcon Antron A-99
Vertical, just out of the box, never used. 9.9 (sic) dBi Gain. New
price $89.95 plus shipping. Just found the GPK-1 radial kit (in the
box) for the A-99, new cost $52.95 plus shipping. 2,000 Watt Rated,
18-29 MHz Optimal Range can be used for Amateur Band 10 Meters (cut
11.5" of the top radiator). Female UHF Coax Connection, Height: 17.5'
Feet Tall, No Ground Needed . New package deal both for $90.00 Plus
shipping. or Call (757) 487-0357

WOW!

I have a .61 wavelength 4 element beam that's only a dB or so better!
What the heck does this design look like?

tom
K0TAR

10 Meter Vertical
 

"Tom Ring" wrote in message
. net...
Sonny Hood wrote:
Make a good 10 meter vertical from CB Antenna, Solarcon Antron A-99
Vertical, just out of the box, never used. 9.9 (sic) dBi Gain. New
price $89.95 plus shipping. Just found the GPK-1 radial kit (in the
box) for the A-99, new cost $52.95 plus shipping. 2,000 Watt Rated,
18-29 MHz Optimal Range can be used for Amateur Band 10 Meters (cut
11.5" of the top radiator). Female UHF Coax Connection, Height: 17.5'
Feet Tall, No Ground Needed . New package deal both for $90.00 Plus
shipping. or Call (757) 487-0357

WOW!

I have a .61 wavelength 4 element beam that's only a dB or so better! What
the heck does this design look like?

tom
K0TAR

Now, now Tom. You have to understand the i in dBi stands for impossible.
Dale W4OP

10 Meter Vertical
 

Tom Ring wrote:
Sonny Hood wrote:
Make a good 10 meter vertical from CB Antenna, Solarcon Antron A-99
Vertical, just out of the box, never used. 9.9 (sic) dBi Gain. New
price $89.95 plus shipping. Just found the GPK-1 radial kit (in the
box) for the A-99, new cost $52.95 plus shipping. 2,000 Watt Rated,
18-29 MHz Optimal Range can be used for Amateur Band 10 Meters (cut
11.5" of the top radiator). Female UHF Coax Connection, Height: 17.5'
Feet Tall, No Ground Needed . New package deal both for $90.00 Plus
shipping. or Call (757) 487-0357

WOW!

I have a .61 wavelength 4 element beam that's only a dB or so better!
What the heck does this design look like?

tom
K0TAR

That's actually pretty sorry for a CB whip. Most of 'em have at least 12
dB gain and are rated for 10,000 watts. A visit to your local truck
stop will convince you.

Roy Lewallen, W7EL

10 Meter Vertical
 

In message , Tom Ring
writes
Sonny Hood wrote:
Make a good 10 meter vertical from CB Antenna, Solarcon Antron A-99
Vertical, just out of the box, never used. 9.9 (sic) dBi Gain. New
price $89.95 plus shipping. Just found the GPK-1 radial kit (in the
box) for the A-99, new cost $52.95 plus shipping. 2,000 Watt Rated,
18-29 MHz Optimal Range can be used for Amateur Band 10 Meters (cut
11.5" of the top radiator). Female UHF Coax Connection, Height: 17.5'
Feet Tall, No Ground Needed . New package deal both for $90.00 Plus
shipping. or Call (757) 487-0357

WOW!

I have a .61 wavelength 4 element beam that's only a dB or so better!
What the heck does this design look like?

tom
K0TAR
It includes ground gain. However if they want to play this game, an
isotropic antenna has a gain of 6dBi, which gets you back to 3.9dBi, but
even that is pushing it for a 1/2 over a 1/4 , unless you can get it up
at a few hundred feet. :-)

Brian GM4DIJ


--
Brian Howie

10 Meter Vertical
 

"Brian Howie" wrote in message
...
In message , Tom Ring
writes
Sonny Hood wrote:
Make a good 10 meter vertical from CB Antenna, Solarcon Antron A-99
Vertical, just out of the box, never used. 9.9 (sic) dBi Gain. New
price $89.95 plus shipping. Just found the GPK-1 radial kit (in the
box) for the A-99, new cost $52.95 plus shipping. 2,000 Watt Rated,
18-29 MHz Optimal Range can be used for Amateur Band 10 Meters (cut
11.5" of the top radiator). Female UHF Coax Connection, Height: 17.5'
Feet Tall, No Ground Needed . New package deal both for $90.00 Plus
shipping. or Call (757) 487-0357

WOW!

I have a .61 wavelength 4 element beam that's only a dB or so better! What
the heck does this design look like?

tom
K0TAR
It includes ground gain. However if they want to play this game, an
isotropic antenna has a gain of 6dBi, which gets you back to 3.9dBi, but
even that is pushing it for a 1/2 over a 1/4 , unless you can get it up at
a few hundred feet. :-)

Brian GM4DIJ


Actually, if you want an emergency antenna for operating 20 to 6 meters with
a tuner, the A-99 Solarcon can do the job.

Let's face it, without favorable propagation, no antenna, regardless of its
alleged gain, is going to provide contacts. After that admission,
directionality and gain are about all that the beam antennas provide. For
someone living in a small footprint land parcel with very limited antenna
options, the A-99 by Solarcon is really a pretty good deal.

I've worked Europe, Africa, Russia and all of the US, Mexico, Central
America and South America with ease. When the bands are open, you are
capable of working most of the world with one of these antennas and only 100
watts. And I'm talking about voice contacts, not power miserly CW or digital
models.

Now, consider that you're sitting on your bed (your hamshack) and you are
thinking of the money that you have, which isn't enough to buy a tower, a
rotator and the beam that you want, but is enough to buy the Solarcon A-99
antenna, which you can put up yourself without protest from the landlord. On
the one hand you have no operating at all, but in the other hand (A-99), you
can work the world. Which would you choose?

Believe it or not, I was chewing the rag with a fellow in Austria one day
for quite a while (can't remember his callsign). We finally got around to
talking about station equipment and we went through the radio list and other
stuff. I purposefully avoided mentioning my antenna (we were on 12 or 10
meters). But after a while, he wore me down and I admitted that I was using
a Solarcon A-99. All he did was say, "That's a CB antenna!" gave his
callsign and that was the last I heard from him. He was convinced that I was
a bootlegger, even though I used my legal callsign which was then current in
the callbook.

It's hard to believe that there are such snobs in the world.

Ed, AJ4PJ

10 Meter Vertical
 

On Apr 22, 2:29*am, "Ed Cregger" wrote:


Ed, AJ4PJ

Did you change calls yet again? I'm confused.. :/

10 Meter Vertical
 

I have a .61 wavelength 4 element beam that's only a dB or so better!
What the heck does this design look like?

tom
K0TAR

I have an A-4S thats only 8.4db gain. I guess I paid way too much and
should have bought
this WONDER antenna

10 Meter Vertical
 

R.Scott wrote:
I have a .61 wavelength 4 element beam that's only a dB or so better!
What the heck does this design look like?

tom
K0TAR

I have an A-4S thats only 8.4db gain. I guess I paid way too much and
should have bought
this WONDER antenna

I'm just putting the final touches on the conversion of my well-used
"Antenna Basics" talk from overheads to Power Point for an upcoming
convention in Boise this weekend. Among the promises I make at the
beginning are to show how to make a back yard dipole with over 4.4 dBd
gain, and a three-element beam with 3 S-Units gain. But after some
thought, I decided that the beam actually has 6 S-Units gain, and that's
what I'll guarantee. So a 9 dB vertical is child's play.

Roy Lewallen, W7EL

10 Meter Vertical
 

Roy Lewallen wrote:
R.Scott wrote:
I have a .61 wavelength 4 element beam that's only a dB or so better!
What the heck does this design look like?

tom
K0TAR

I have an A-4S thats only 8.4db gain. I guess I paid way too much and
should have bought
this WONDER antenna

I'm just putting the final touches on the conversion of my well-used
"Antenna Basics" talk from overheads to Power Point for an upcoming
convention in Boise this weekend. Among the promises I make at the
beginning are to show how to make a back yard dipole with over 4.4 dBd
gain, and a three-element beam with 3 S-Units gain. But after some
thought, I decided that the beam actually has 6 S-Units gain, and that's
what I'll guarantee. So a 9 dB vertical is child's play.

Roy Lewallen, W7EL
Roy;

When you are finished with the convention can you post the PP somewhere
on the net so we can download it. It sounds interesting.

Dave WD9BDZ

10 Meter Vertical
 

It includes ground gain. However if they want to play this game, an
isotropic antenna has a gain of 6dBi, which gets you back to 3.9dBi, but
even that is pushing it for a 1/2 over a 1/4 , unless you can get it up at
a few hundred feet. :-)

Brian GM4DIJ

How does a vertical benefit from ground gain?

Dale W4OP

10 Meter Vertical
 

Dale Parfitt wrote:
How does a vertical benefit from ground gain?

2-3 dB higher gain over perfect ground than in
free space?
--
73, Cecil, IEEE, OOTC, http://www.w5dxp.com

10 Meter Vertical
 

Dale Parfitt wrote:
It includes ground gain. However if they want to play this game, an
isotropic antenna has a gain of 6dBi, which gets you back to 3.9dBi, but
even that is pushing it for a 1/2 over a 1/4 , unless you can get it up at
a few hundred feet. :-)

Brian GM4DIJ

How does a vertical benefit from ground gain?

Dale W4OP

An isotropic antenna always has a gain of 0 dBi, by definition. Also by
definition, it always radiates equally in all directions. So 0 dBi is
always a fixed field strength for a given power input and distance, and
this field strength doesn't depend on the presence or absence of a
ground or other environmental characteristics. This constancy is what
makes dBi such a useful reference. Any other antenna, such as a dipole,
used as a reference should be placed at exactly the same position and,
if over ground, at the same height as the antenna being analyzed.

Antenna field strength automatically increases 3 dB when you place it
over a perfect, infinite, flat ground plane(*) as opposed to being in
free space. That's because the radiated power is concentrated in one
hemisphere rather than being radiated in all directions. The isotropic
reference, 0 dBi, is always referenced to an isotropic antenna in free
space, that is, one which radiates equally in all directions. So gain
expressed in dBi increases 3 dB as a result. Ground reflection also
modifies the antenna pattern due to reflection, so the gain increase
from placing an antenna over ground is often greater than 3 dB,
typically around 4 - 5. A little experimentation with EZNEC or other
modeling program will illustrate this.

Which gives me an opening for one of my favorite soap box topics: dBd.
If you simply accept, as most amateurs do, that 0 dBd = 2.15 dBi, then
any old dipole over ground exhibits several dBd gain. The gain of a
dipole relative to a dipole at the same place over the same ground is of
course really zero dB. But the field strength of a dipole over ground is
considerably greater than a dipole in free space (~2.15 dBi) and
therefore its gain is greater than a free space dipole. This is the
danger of using dBd as a reference except in free space. At least one
major antenna manufacturer used this ambiguity to their advantage to
give their antennas several apparent dB gain over their competitors'.

(*)A dirt ground isn't much different from a perfect ground for low
angle radiation from horizontal antennas.

Roy Lewallen, W7EL

10 Meter Vertical
 

Yep, I changed my callsign again. Decided to go with the spirit of living in
4-land. I'm working my way back to NM2K, if you know what I mean?

Ed, AJ4JP


wrote in message
...
On Apr 22, 2:29 am, "Ed Cregger" wrote:


Ed, AJ4PJ

Did you change calls yet again? I'm confused.. :/