PDA

View Full Version : Range of A & G bridges


wwalcher
03-28-2005, 06:11 AM
What ranges are you getting out of 802.11a and 801.11g bridges, such as the Dlink DWL-G810 or the DLink DWL-7100 and DWL-2100 mentioned in a recent thread? In a post a couple of months ago, someone mentioned you could not get more that 4/10 of a mile from the access point before you had to switch over to a WRAP board or other Star-OS client where you can adjust the ACK setting. I took that as gospel until I actually tested some at greater distances. They seem to work well at over 1 mile. What have you guys found the distance limit to be when you have to switch to a Star-OS client?

titan_wireless
04-12-2005, 04:10 PM
If your CPE and AT combo is strong enough you can go 2+ miles. Once you start pushing 3+ miles you will need to adjust ACK (maybe). There are some posts on this subject. This is for OTC cpe without amps only high gain AT's. You might want to use the CB3 if you need to go farther. I know some people pushing 7+ miles with it. I don’t use it but the price is comparable with your 7100. Unless your using the 7100 inaMode.

mmc1800
04-14-2005, 10:17 PM
I have some Senao boxes using stock Senao APs/bridges with no ack adjustments that work as far away as 9 miles, they are the B only models that use the PCMCIA card (I am pretty sure they are CB3s running firmware 1.8.0 if that narrows it down). The throughput is degraded somewhat on these links though it is not unreasonable (200 KB/sec or so).

The Senao G models with the mini PCI G radios pretty much start to eat it right around a mile. I have several in service under a mile and they are acceptable, but I do have some problems with them needing to be power cycled so I can't recommend them for anywhere human access to the POE is inconvenient. Even with solid signal strengths they will drop throughput to almost nothing (10KB/sec) once you get much over a mile and generally wont even associate past about 2. Especially on the G radios make sure you are doing actual throughput tests and not just signal strength and association tests because the radios will look as if they have great signal but the ack timing not being right drops the throughput to nothing.

I am slowly replacing all of these radios with StarOS equipment (even the ones that hold 11 meg solid) whenever possible. Even though they work well enough I have enough installs that are inside a mile that I am trying to replace all the longer links with StarOS and move the Senaos all to shorter hop CPE links under a mile with a StarOS AP.

StarOS just work better for the longer links no question.

budi
10-23-2005, 09:47 AM
About max 10's km using cheap on the self hardware.

We're get around 7 Mbps at 6 km.


Thank's
//budi