I've had much better success with B in a hostile rf environment. Walmart put in wireless scanners just to the south of a sector where we have been running a Mikrotik AP and CPE's on G for a couple of years. I couldn't change channels or channel sizes but moved to B and while slower we were able to move customers to 5.7 more gracefully. We've left the 2.4 at B and still have 15 low usage subs on it doing very well.
I have used 411 AP's with XR5 cards and NS5L's with good success in small subdivision projects. 1/2 to 1 mile using 5M channels running G, mostly horizontal. We lock the rates lower than 54 if we see any CCQ numbers consistently below 66%. We've had our best success at 36MB. Lowering not raising the power in most cases improves our CCQ. But again, we're mostly within a half mile. We don't have a sector broader than 90 deg, run mostly 5.4 on the AP and 5.7 on our backhauls. One site has grown to over 25 moderate usage clients and I can see a slowdown in the evenings from time to time. We do rate limit at the Mktik to 5 down and 3 up. I've got several between 10 and 20 subs and have no issues. It's hard to argue against a sub 25 client system of NS5L's verses anything else out there when its paid for day 1. I'm not looking to start a product flame just trying to get a ROI. Dave Hulsebus RickG wrote: > We've been running B mode since 2004. I dont lock the rates down but > always shoot for 11Mbps. I like the idea of G mode but every time I > try it, performance drops on the customer side. It may be because > we're still on WRAP's running StarOS v2. I just started updating to > v3, and it seems to be better. I plan on testing out small channels > soon. I'm also debating between Routerboards w/Mikrotik versus > Ubiquiti. > -RickG > > On Thu, Oct 1, 2009 at 10:58 AM, Jason Hensley <ja...@jaggartech.com> wrote: > >> In 2.4 land, if you have a lot of noise, which protocol is better - B or G? >> Is it better to run an AP as locked into one mode or is it OK to do a mix? >> >> Max I want off of 2.4 customers is 3meg so not that worried about the extra >> speed that G will provide, but, I would like to know which is more stable? >> I've always thought that B was more stable overall but just provided less >> bandwidth. I've gotten some info that may counter that. What's the >> real-world experience with folks in a high-noise environment, combined with >> a higher useage AP? >> >> I've got an AP that we've run in B mode only for a while. We've started >> having problems with it - speeds go from 3meg at the customer to 200k and >> fluctuate constantly. We've worked with RTS, ACK timeouts, etc etc and >> nothing seems to have improved the stability. For testing purposes we put >> up another AP right next to the one we're having trouble with. Switched two >> of our gaming clients to that one (setup as G mode only) and they seem to be >> doing better, but not quite as good as we feel they could be. This is on >> Deliberant AP's (Duos). The backhaul part of it is not the issue - we can >> pull close to 15meg back to our office when cabled into the AP. We have >> other Deliberant APs that are running MANY more clients than this one so we >> know it's not limitations of the equipment. AP is on top of a water tower. >> Have taken all clients off and brought them back on one by one and it did >> not reveal anything significant. With just one customer on the AP started >> acting up again. Swapped radios in the AP thinking we could have one going >> bad and still no luck. >> >> 2.4 antennas are H-pol. We have a ton of noise in the area, but we've been >> through basically every channel and it did not help either. Other AP's in >> the vicinity are performing fine. Thought of the multipath issue so we >> raised our test AP up a little higher than the other one. As I said, the >> test AP seems to be better, but next to it on top of the tower we can get >> around 8 or 9 meg down (locked into G mode), but at the CPE's we're still >> barely getting 2.5-2.8meg. >> >> Any thoughts? We changed everything we can. The new "test" AP has a 9db >> antenna compared to the 13db on the "production" AP. Other than that, they >> are identical as far as equipment goes. >> >> So, back to the subject question though, what's real-world experience with >> G-only mode in the field? >> >> >> >> >> -------------------------------------------------------------------------------- >> WISPA Wants You! Join today! >> http://signup.wispa.org/ >> -------------------------------------------------------------------------------- >> >> WISPA Wireless List: wireless@wispa.org >> >> Subscribe/Unsubscribe: >> http://lists.wispa.org/mailman/listinfo/wireless >> >> Archives: http://lists.wispa.org/pipermail/wireless/ >> >> > > > -------------------------------------------------------------------------------- > WISPA Wants You! Join today! > http://signup.wispa.org/ > -------------------------------------------------------------------------------- > > WISPA Wireless List: wireless@wispa.org > > Subscribe/Unsubscribe: > http://lists.wispa.org/mailman/listinfo/wireless > > Archives: http://lists.wispa.org/pipermail/wireless/ > -------------------------------------------------------------------------------- WISPA Wants You! Join today! http://signup.wispa.org/ -------------------------------------------------------------------------------- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
