Thanks, Jerry --
I guess the good news is that I was not looking for this
antenna to do well higher than, say, 17 meters - My target
bands were 160-20 - and it seems to work WELL ENOUGH
on my target bands.
I have other antennas for these higher bands, which are
designed for them.
I intend this to be a "good" multi band antenna.... but it is
not an "all " band antenna. I should have been more clear
as to the target bands I expect to use it on.
Sidebar -
I find it interesting few of the critics have emphasized how it is
an omni directional antenna, and as a local ham repeatedly tells
me... it "radiates equally bad in all directions." I acknowledge
this is a potential weakness for some users - as there is no
directional gain as you might get from even the simplest beam
design.
And yet that is part of what appealed to me! It gives me a
simple, single solution to the problem of wanting to make contacts
all over the place. So... I purposely traded directional gain for
versatility.
Eventually, a medium sized tower with beam antennas is in
my future. And then I will be able to support some higher and
longer wire antennas. I am learning about that as I go, but for
now, this is an affordable single solution for a complex problem.
============== K8JHR ========================
K4SAV wrote:
>
> Band ___ Take-off angle ___ Gain at 10 deg
> 17 _______ 43 __________ -3.2 dBi
> 15 _______ 37 __________ -5 dBi
> 12 _______ 32 __________ -5.1 dBi
> 10 _______ 56 __________ -5.6 dBi
> 6 _______ 65 __________ -7.6 dBi
>
> For all the bands listed above, most of the signal goes up at an angle
> that never comes back to the earth, however at the lower elevations
> angles which may be useful for communications, there is still enough
> energy to make some contacts even though the antenna would be beaten
> very badly by a low dipole. You still have to add tuner loss and coax
> loss to this and without a remote tuner, in some cases that may be very
> significant depending on the coax used.
>
> =============================================
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|