yagi cell antennas

I recently purchased a dual-band Yagi for use at the cabin, with a
tri-mode phone. It seems that Yagi design is quite specific as far as
physical dimensions vs. frequency, so how can this antenna be good for
both 800 Mhz and 1900 Mhz? It is about 3' long with 15 elements about
5" long.
Also, although other brands of dual-band Yagis seem to follow the
conventional design (all round tubing elements in the same plane) this
one has a reflector that looks like two grates from a toaster oven
sticking out either side.
It claims an astounding 24 db of gain. I think this might be a slight
exaggeration, but nevertheless it works very well in my test setup (I
bar----> 6 bars)
Can anyone shed any light on these questions?

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› See More: yagi cell antennas

Multi-band yagis have elements that resonate at the two different
frequencies, as seen by elements of different lengths. Of those 15
elements, about half of them should be rather short, and the others a bit
longer, but all slightly tapered toward the end away from the "reflector."
The wider reflector is an attempt at slightly higher gain, used more for
product differentiation rather than additional gain.


Bill Radio
Click for Wireless Reviews at:
http://www.mountainwireless.com



"hakelly" <[email protected]> wrote in message
news:[email protected]...
> I recently purchased a dual-band Yagi for use at the cabin, with a
> tri-mode phone. It seems that Yagi design is quite specific as far as
> physical dimensions vs. frequency, so how can this antenna be good for
> both 800 Mhz and 1900 Mhz? It is about 3' long with 15 elements about
> 5" long.
> Also, although other brands of dual-band Yagis seem to follow the
> conventional design (all round tubing elements in the same plane) this
> one has a reflector that looks like two grates from a toaster oven
> sticking out either side.
> It claims an astounding 24 db of gain. I think this might be a slight
> exaggeration, but nevertheless it works very well in my test setup (I
> bar----> 6 bars)
> Can anyone shed any light on these questions?
>

Thanks, Bill, for the info and the helpful link.

On 3 Jan 2006 07:20:38 -0800, "hakelly" <[email protected]> wrote:

>I recently purchased a dual-band Yagi for use at the cabin, with a
>tri-mode phone. It seems that Yagi design is quite specific as far as
>physical dimensions vs. frequency, so how can this antenna be good for
>both 800 Mhz and 1900 Mhz? It is about 3' long with 15 elements about
>5" long.
>Also, although other brands of dual-band Yagis seem to follow the
>conventional design (all round tubing elements in the same plane) this
>one has a reflector that looks like two grates from a toaster oven
>sticking out either side.
>It claims an astounding 24 db of gain. I think this might be a slight
>exaggeration, but nevertheless it works very well in my test setup (I
>bar----> 6 bars)
>Can anyone shed any light on these questions?

How do you connect this external antennae to your phone?

I am thinking.... by using the antenna connector found on any cell phone???

Just an idea though.



"WM" <[email protected]> wrote in message
news:[email protected]...
> On 3 Jan 2006 07:20:38 -0800, "hakelly" <[email protected]> wrote:
>
>>I recently purchased a dual-band Yagi for use at the cabin, with a
>>tri-mode phone. It seems that Yagi design is quite specific as far as
>>physical dimensions vs. frequency, so how can this antenna be good for
>>both 800 Mhz and 1900 Mhz? It is about 3' long with 15 elements about
>>5" long.
>>Also, although other brands of dual-band Yagis seem to follow the
>>conventional design (all round tubing elements in the same plane) this
>>one has a reflector that looks like two grates from a toaster oven
>>sticking out either side.
>>It claims an astounding 24 db of gain. I think this might be a slight
>>exaggeration, but nevertheless it works very well in my test setup (I
>>bar----> 6 bars)
>>Can anyone shed any light on these questions?
>
> How do you connect this external antennae to your phone?
>