Poor wireless speeds (Yagi's and DWL-2000 AP's)

X-No-Archive: Yes

Our wireless LAN extension is not doing as well as we hoped.

The distance between Building A and Building B is 1 kilometer (less than a
mile). We're running Yagi antennas (20ft raised from our roof tops) and
using D-Link DWL-2000AP access points (H/W Ver: B2 and the latest one, is
H/W Ver: C).

Our speed is between 2 1/2 mb/s to at best 4 mb/s continuous. I've played
with the TX rates, amplification, Super G (disabled) static, no Super G, 11g
only mode, etc., etc.

We can't access our Head Office network at a reasonable speed from the
Remote Office because it is just too darn laggy. So, we've setup Terminal
Servers at the Head Office which do the trick, but for disaster recovery
(i.e. replicating megabytes upon megabytes = gigabytes of data) this will
not do.

What are some of your success stories in terms of speed in a situation like
this? Can we realistically get ANYWHERE in the neighborhood of 11 mb/s or
more?

Appreciate any comments and help in this matter,

Thank you!
Distraught in Wireless Hell

Sell that crap .

Number of people, including my self, had all kinds of problems with 2000AP
(very slow speeds, unability to connect as a client, unstability, ...).

Some pople got better results using latest firmware, but I wasn't so lucky.

Anyways, I bought 900AP+, and it works like a charm (it uses 802.11b+
standard with 22Mbps maximum speed, it has more options in web admin
interface, supports all 5 modes (including repeator mode), it has more
output power, hence longer range, it's stable unlike 2000AP, it's around $10
cheaper the 2000AP, ...).

Would putting amplifiers on our 2000AP's help in terms of mb/s speed?

If we went with Cisco AP's ($1200 range) would this ultimately resolve our
problems? We need atleast 11 mb/s throughput. Can going from on AP to
another really make THAT big of a difference?

I called D-Link on the phone and they mentioned they were able to get 20
mb/s on the 2000 AP's.

We're not even close.

Thanks!

"Milan" <(E-Mail Removed)> wrote in message
news:c4k5kv$2i1de9$(E-Mail Removed)...
> Sell that crap .
>
> Number of people, including my self, had all kinds of problems with 2000AP
> (very slow speeds, unability to connect as a client, unstability, ...).
>
> Some pople got better results using latest firmware, but I wasn't so
lucky.
>
> Anyways, I bought 900AP+, and it works like a charm (it uses 802.11b+
> standard with 22Mbps maximum speed, it has more options in web admin
> interface, supports all 5 modes (including repeator mode), it has more
> output power, hence longer range, it's stable unlike 2000AP, it's around
$10
> cheaper the 2000AP, ...).
>
>

Check these first:
- You said that antennas are "20ft raised from our roof tops"? How much
cable is between APs and antennas (20m of cable (even the most expencive
one) would weaken the signal and lower the speed)?
- Do you have line of sight between 2 antennas?
- Did you check that antenna connectors are plugged-in correctly (my 900AP+
covered the distance of around 650m, but had a very slow speed; than I
realized I haven't plugged in the antenna cable at all )?
- Did you try changing the channels on both APs?


> Would putting amplifiers on our 2000AP's help in terms of mb/s speed?

Maybe (not sure, I think that 2000AP has a buggy firmware, not sure if
amplifier would help very much), but it's not worth the money anyway.

>
> If we went with Cisco AP's ($1200 range) would this ultimately resolve our
> problems? We need atleast 11 mb/s throughput.

That's for sure, but why waste $1200 when you can get perfectly working AP
for under $100.

> Can going from on AP to
> another really make THAT big of a difference?
>

Yes. I had 2000AP and it didn't work at all. I replaced it with 900AP+ and
it works great (it works constantly for a 12 days now, without any
problems).

> I called D-Link on the phone and they mentioned they were able to get 20
> mb/s on the 2000 AP's.
>
> We're not even close.

2 average G standard APs (not 2000APs ofcourse) with average yaggis on 1km
distance could give much more then 20Mbps (I heard of people getting 44Mbps
and more on 1km using cheap Ovislink APs and yaggis).