Re: wireless application

On Aug 11, 2:51 pm, joecool <joecool.2v6...@no-mx.wirelessforums.org>
wrote:
> Looks like they have an outside panel antenna mounted to a tower next
> to the main office. That's where the source is originating from.

Hmmm...that would describe a very direction antenna similar to a Yagi.
Does the main office sit at one end of the campground and all the
campers are in more or less a straight line in one direction where the
flat panel antenna is pointed? OR...could that panle antenna be
pointing to a backhaul somewhere and the actual local wireless LAN has
a non-obviously seen omni antenna? If so and its not easily seen, that
might be part of the problem as it should be on top of that tower.

<nevtxjustin@gmail.com> wrote in message
news:1186939055.250366.289720@g12g2000prg.googlegr oups.com...
> On Aug 11, 2:51 pm, joecool <joecool.2v6...@no-mx.wirelessforums.org>
> wrote:
>> Looks like they have an outside panel antenna mounted to a tower next
>> to the main office. That's where the source is originating from.
>
> Hmmm...that would describe a very direction antenna similar to a Yagi.

I would not say like a yagi, as some panel antennas can cover 30 degrees up
to 120 degrees. Like the sector antennas on the cell sites.

> Does the main office sit at one end of the campground and all the
> campers are in more or less a straight line in one direction where the
> flat panel antenna is pointed? OR...could that panle antenna be
> pointing to a backhaul somewhere and the actual local wireless LAN has
> a non-obviously seen omni antenna? If so and its not easily seen, that
> might be part of the problem as it should be on top of that tower.
>

On Aug 12, 4:41 pm, "Dana" <raff...@yahoo.com> wrote:
> <nevtxjus...@gmail.com> wrote in message
>
> news:1186939055.250366.289720@g12g2000prg.googlegr oups.com...
>
> > On Aug 11, 2:51 pm, joecool <joecool.2v6...@no-mx.wirelessforums.org>
> > wrote:
> >> Looks like they have an outside panel antenna mounted to a tower next
> >> to the main office. That's where the source is originating from.
>
> > Hmmm...that would describe a very direction antenna similar to a Yagi.
>
> I would not say like a yagi, as some panel antennas can cover 30 degrees up
> to 120 degrees. Like the sector antennas on the cell sites.

In some panel antennas, true. On other flat panel antennas like I use
with 28 dB gain and less than 5º beamwidth, its even closer to a dish
antenna. So it could be very similar to a Yagi.

<nevtxjustin@gmail.com> wrote in message
news:1186955631.673759.11810@q4g2000prc.googlegrou ps.com...
On Aug 12, 4:41 pm, "Dana" <raff...@yahoo.com> wrote:
> <nevtxjus...@gmail.com> wrote in message
>
> news:1186939055.250366.289720@g12g2000prg.googlegr oups.com...
>
> > On Aug 11, 2:51 pm, joecool <joecool.2v6...@no-mx.wirelessforums.org>
> > wrote:
> >> Looks like they have an outside panel antenna mounted to a tower next
> >> to the main office. That's where the source is originating from.
>
> > Hmmm...that would describe a very direction antenna similar to a Yagi.
>
> I would not say like a yagi, as some panel antennas can cover 30 degrees
> up
> to 120 degrees. Like the sector antennas on the cell sites.

In some panel antennas, true. On other flat panel antennas like I use
with 28 dB gain and less than 5º beamwidth, its even closer to a dish
antenna. So it could be very similar to a Yagi.

Point I was making is that it would be very misleading to assume a panel
antenna is as directional as a yagi. More times than not a panel antenna
covers a sector of interest.

nevtxjustin@gmail.com hath wroth:

>On Aug 12, 4:41 pm, "Dana" <raff...@yahoo.com> wrote:
>> <nevtxjus...@gmail.com> wrote in message
>>
>> news:1186939055.250366.289720@g12g2000prg.googlegr oups.com...
>>
>> > On Aug 11, 2:51 pm, joecool <joecool.2v6...@no-mx.wirelessforums.org>
>> > wrote:
>> >> Looks like they have an outside panel antenna mounted to a tower next
>> >> to the main office. That's where the source is originating from.
>>
>> > Hmmm...that would describe a very direction antenna similar to a Yagi.
>>
>> I would not say like a yagi, as some panel antennas can cover 30 degrees up
>> to 120 degrees. Like the sector antennas on the cell sites.

>In some panel antennas, true. On other flat panel antennas like I use
>with 28 dB gain and less than 5º beamwidth, its even closer to a dish
>antenna. So it could be very similar to a Yagi.

Lots of different types of panel antennas.

There are 2.4GHz panel antennas with multiple phased 3-5 element log
periodics inside. They're easy to recognize because the fiberglass
radome bulges forward in a wedge about 4-6" high. I forgot who makes
them. Some of them are extremely broadband, covering everything from
the 800MHz cellular band to the top of the PCS band at 2000MHz.
However, the one's for 2.4GHz are much simpler.

More common are Franklin antennas. See:
<http://www.qsl.net/yu1aw/vhf_ant.htm>
<http://pe2er.nl/wifisector/>
These have a wide horizontal beamwidth (70-150 degrees), narrow
vertical beamwidth of about 5-10 degrees with lots of gain. Great
antennas and really easy to build. I use them in place of omnis.

There are also arrays of 2.4GHz patch antennas on a large substrate.
Most of these are on a square base and have equal beamwidth in both
axis's. Here's a small version:
<http://802.11junk.com/jeffl/antennas/tecom/slides/tecom-505025e-1.html>
Well, rectangular but close enough.

There are also slotted waveguide antennas, which are made to look
similar to a common cellular/paging sector antenna to make mounting
easy.

I'm not going to speculate on what the WISP used in the install. Get
a pair of binoculars and read the serial number tag. Try to guess
where it's pointed and how far off the center line to the cabin. If
the angle is large, you may be out of the pattern making connectivity
problematic.

--
Jeff Liebermann jeffl@cruzio.com
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558