My connection was fine without any errors since today when it started to rain and thunder, Now im having errors of extensive data loss and so on. Maybe it will return to normal when it is sunny again. I have read that i compare two fields in the wireless registration table: frames and hw-frames. And the hw-frames is larger than the software frames then i will get latecy and low speeds and trhoughput. Can this be the case here?
my hw frames is about ±20 bigger than my software frames. Can this be a problem? And how do i fix it so that ther is no restransmits.
Well has the weather improved there yet? Did you system come back to normal?
If yes to the above - then you have too small of a ‘fade margin’. Typically, you want about 30db difference between the noise floor and the received signal in areas that have severe weather issues at the lowest data rate. 20 db is the recommended value for any circuit to maintain good communication. 30db gives you a 10db+ fade margin in very bad weather conditions on the lowest data rate.
yip the weather did thanx. But still getting it. i have set the channel to the highest one. That is 5830. I did not see any errors yet. WHen i transfer files then i takes ages but luckily no errors Do you think i must set my mikrotik to choose the data rates by default? I have set my mikrotik to keep the data rate to 18, will i have weaker performance when i set the cards to default. That is becos the card constantly changing bit rates. thanx
have you checked your hardware frames againts your software frames. Here is my result. does this cause bad speeds becos the card restransmits. I include a jpeg of my result. please let me know.And what to do.
Looks like you are connecting at -77db Is that normal for this connection? What is the setup; distance km or miles, antenna gain, card type (like R52H or XR something), what band 2ghz, 5ghz ?
Can you show both sides of the link?
Let’s see if we can figure out if you are getting the right signal level based on your setup. It could be that the lightening took out one of your receivers or transmitters or the diversity switch that’s on most cards.
the distance is 1.2 km.i have two 5ghz 24dbi grids with a rb 433 as the ap and a rb 411 as the client. they both have r5h cards with a mmxc-to-ntype-male connector. and a lmr-400-ntype-male-to-ntype-male. the ap is almost 3meters high and the client aswell.there are some trees but not 2 much. My link has gone down this morning at 4am. I got deauth error four times in a row. Now i cannot connect and dont know what it can be. I dont hope the cards have overheated. Everybody says that the r5h card will not overheat.that is what i hope. Im running my setup on 5ghz-10mhz channel 5830. I cannot find any ap’s when i do a scan from the client side. I was able to do that before.
You receive signal strength at 1.2km with that setup should be in the order of -50db, not -77db. I suspect that one of your cards is ‘blown’. The other possibility can be that you have water intrusion in one or more cables causing you to lose a lot of signal…
Has anything changed in your line of site (LoS). You said there was some vegetation in between… has that changed and is blocking you more now than before?
everybody that lives around me have satelite tv. maybe that is why..there run a river between my link.so we kinda live ontop a small hill.my ap and client is the same height.. i always use rubber tape that is recommended for satelite dish instalations. today i have replaced the rb and card but stil nothing.also the lmr400 cable.stil no luck.wonder if it may be the antena.. i dnt have a view of t.he ap from the client side.i use google earth to ccalculate te direction.other clients and ap’s in my part of town also have low signal when recieving from the same direction that i am.
I use gooing to determine to which direction my antenna must focus. Them my frien dwill use a laptop while i try to finetune the antenna so that i get the best signal. Im using the highest channel becos that if when i get ethe best signal.With all the other channels i get -92 tpo -87. But with channel 5830 i can get up to -75 if im lucky.
Tcp speed is slow. when i transfer files is will stay at 333kbps to 666kps all the time. Take ages to install office 2003 from pc at the AP side. what can i do? MUst i limit the data rate to 6mbits
When i use a lower channelm then i will get extreme data loss errors. I think i might be located in a bad spot. When i run snooper to see who is using what channel then i see tat only a few is been used.
I have change my freq from 5ghz-10mhz to 5ghz without turbo. When i do i scan then i pickup 4 ap’s running channel 5180 and 1 running 5825. Whne i set my channel to anyone below 5825 then i will get extensive data loss errors in the logs, or even beacon not recieved errors. Im also running 5ghz on 5825 now. So far i did not had any errors yet. The speed is not that bad.I will het 132kbps on the tx and 4.3mbps on the rx when im trying to launch a file from a pc on the ap’s side. I am then using the computer located on the client side. The file that im trying to launch it windows media player 11. The file is located in a shared folder on a computer running from the AP eth1.
Look, what everyone is trying to tell you is that you have a VERY BAD signal there. Your Line of Sight (LoS) is bad or your are badly misaligned with the AP side.
With a very bad siganl you can not get good throughput. No matter what you do, until you get your signal issue resolved you are NEVER going to get good throughput. Although wireless may seem like magic and some folks think that if you sprinkle enough ‘fairy dust’ on it it might work - it does not.
You need to get a better signal. That may mean making your reciever side antenna higher. Moving it to a different location on the building. It may require that you put an intermediate AP/Station in between your current AP and this site. (Kind of like a repeater only I am saying more like a backhaul and another AP). So that you get a better line of sight between your client and the AP.
I am not trying to mean here - I am just telling you the facts. Complaining that you don’t like the facts (bad throughput) is a non-issue. It is a fact that you do not have good throughput.
Take the suggestions all through this post, get a better quality signal and your throughput will increase dramatically.
