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Having issue with multiple Wireless Routers in my home.

Tags:
  • Wireless Router
  • Routers
  • Internet Service Providers
  • Wireless Network
Last response: in Wireless Networking
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October 1, 2014 9:24:21 AM

Hello all, long time lurker first time poster here. I am having a continuous issue in my house for the past week. I decided to purchase three modems and routers for which i pay separate subscription to my isp. Dont bother asking why, it is just the nature of my business, so long story short internet slows down to a crawl whenever i am connected via one of the routers wirelessly, speed test shows nothing higher than 1.2Mbps whereas ditching the router and connecting with cable directly to the modem hits the proper 15Mbps that are guaranteed within the isp agreement.

Now, i am acquainted with this whole wireless and router configuration world as a much as a 8 yold is to quantum mechanics (non Asian that is) but i should be able to catch up quickly since having this issue resolved is kind of important to me. I heard something about signals interfering with another or something of that nature so by all means, help a brother out.
The modems are: Linksys 1200 cisco
The routers are: Scientific Atlanta
If i need to provide screenshots or anything of that sort just ask where and what :D 

Captain you are on ! :D 

More about : issue multiple wireless routers home

Best solution

October 1, 2014 9:52:33 AM

You need to prevent the radios in the routers from interfering with each other. If they are spaced far apart and the users that use them are also closer to their prospective router it may help to reduce the radio transmission power if you router has that option.

With 3 devices you are going to max the capacity of the 2.4g radio band. There is only a total of 60mhz of bandwidth to use. You need to set the routers to only use 20mhz....most have the ability to use up to 40mhz on 2.4g. Then you need to assign them to different channels. Generally the ones used are 1,6,11 which spaces them out so they each get their share of the 60mhz of radio bandwidth.

You need to do a similar function on the 5g channels if your routers support it. Here you might be able to use 40mhz channels since there are more total channels. The channels in the 5g range are each 20mhz wide unlike the 2.4g range. You can pretty much assign every other one.

Now this all works good in theory if you are the only one with wireless but it would be rare that you would not have a neighbor trying to use wireless. If you are successful in setting up your routers to not interfere with each other you pretty much guarantee your neighbor will interfere with at least one of your routers. Not much you can do they probably will hate you for being a pig and using all the wireless bandwidth with 3 routers. Really all you can do is try your best but the problem of wireless interference is getting to be a huge problem.

Used to be people would war drive to get maps of wireless devices, now you can get 10-20 sitting in your house. High density places like college dorms can easily have 100 devices competing for radio bandwidth.
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October 1, 2014 10:02:45 AM

bill001g said:
You need to prevent the radios in the routers from interfering with each other. If they are spaced far apart and the users that use them are also closer to their prospective router it may help to reduce the radio transmission power if you router has that option.

With 3 devices you are going to max the capacity of the 2.4g radio band. There is only a total of 60mhz of bandwidth to use. You need to set the routers to only use 20mhz....most have the ability to use up to 40mhz on 2.4g. Then you need to assign them to different channels. Generally the ones used are 1,6,11 which spaces them out so they each get their share of the 60mhz of radio bandwidth.

You need to do a similar function on the 5g channels if your routers support it. Here you might be able to use 40mhz channels since there are more total channels. The channels in the 5g range are each 20mhz wide unlike the 2.4g range. You can pretty much assign every other one.

Now this all works good in theory if you are the only one with wireless but it would be rare that you would not have a neighbor trying to use wireless. If you are successful in setting up your routers to not interfere with each other you pretty much guarantee your neighbor will interfere with at least one of your routers. Not much you can do they probably will hate you for being a pig and using all the wireless bandwidth with 3 routers. Really all you can do is try your best but the problem of wireless interference is getting to be a huge problem.

Used to be people would war drive to get maps of wireless devices, now you can get 10-20 sitting in your house. High density places like college dorms can easily have 100 devices competing for radio bandwidth.


Yes, i know some of those words... so long story short use cable ? :D 
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