On Jul 18, 12:37 pm, szilagyic <[email protected]> wrote:
> Hello,
>
> Recently we purchased acellularyagi dual band antenna to help our
> signal strength on a Sierra 860 AirCard with Cingular/AT&T, in hopes
> of improving the speed of the card at our home. We are having
> horrible results and cannot get it to work correctly. The antenna is
> a CCM brand 24 dB dual band yagi (824-896Mhz & 1870-1950Mhz); it was
> purchased from here: (http://www.easystreetelectronics.com...on=VIEWPROD&Pr...
> ). It is attached to a 30 ft RG58U coax cable that runs back to a
> TNC-
> to-FME adapter, then to the Sierra card. We tried the antenna at a
> test location where we know where the tower is at, about 2 miles away,
> and can get 90% signal strength with the stock antenna there. When we
> attached the yagi and moved it in small increments to each side until
> we honed in on the exact spot, the highest signal strength we can get
> is about 50-60%. I was assuming we should be able to get 100% signal
> strength easily since the stock antenna already gets 90%.
>
> We tried the yagi at another location where we only get about 30%
> signal strength with the stock antenna. We do not know where the
> tower is at so we started in one spot and went in 5 degree increments
> in a complete circle, noting the signal strength at each stop. The
> highest we were able to get is about 20%.
>
> We must be missing something here, as I don't see why the yagi has
> less signal strength than the stock antenna. I have not tested the 30
> ft cable or ends yet, but it was factory made and appears to be fine
> (no kinks, etc). The yagi is mounted on a PVC pole, and the elements
> of the antenna are vertically oriented, and it the main beam of the
> antenna is parallel
> with the ground.
>
> Can anybody help us or provide some tips??? Are we using the right
> antenna? Right now we are completely stumped, and would really like
> to get this figured out.
>
> Thank you very much for all feedback and help on this matter...
>
> --
> Chris


Thank you very much for all of the feedback in this thread. I have
finally swapped out the original RG58U coax with LMR-400, and the
difference is phenominal. At our test location, we were getting
around 40% signal with the RG58U hooked to our yagi. When I swapped
out the RG58U cable with the LMR-400 cable, we got all the way to
100%! So it appears our yagi is working good, too.

Thanks again..........
--
Chris



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