| [Help Me] dir-825 antenna, power, comparable stability dd-wrt I originally posted in the wrong, linksys, forum.
1.
a. antenna
I'm taking my dir-825 from my apartment to my home overseas (concrete) to replace a d-link di-634m that doesn't reach the 2nd floor unless I'm to the far corner closest to the router on the 1st floor. I'd like to upgrade the antennas of the dir-825 so that there is better chance it can go through the 3 concrete walls (6-8in thick) + roof (concrete + barrel tile) and reach my bedroom on the 2nd floor.
What do you think about this antenna (7dbi gain): The ad says it can provide "2-3 times" the gain of stock antenna. Can I get anything better in the same size/cost and still fit easily into a packed suitcase? I welcome any suggestions even if you consider what I intend to buy isn't worth it.
b. power setting?
Considering I buy the 7dbi gain antennas or whichever you suggest, what power setting should I adjust and to what level, for both stock or dd-wrt firmware, or is this not needed? For example, would you be better off just setting it to whatever max or to the spec of antenna, I ask since I never fooled with settings nor antennas atall?
2. comparable stability for DD-WRT
a. As per the which router should I buy section here one can assume the WRT350N or WRT600N would be more stable dd-wrt then dir-825.... SIMPLY would you agree or disagree?
b. If more would tend to disagree then agree, its kind of inconsistent as I've read of many complains of broadcom devices (wrtn's) vs antheros. That considered it seems logical to assume a dir-825 has just as good a chance to be as or even more to be a stable dd-wrt unit then the wrt350n or wrt600n (ALL THINGS EQUAL IN VARYING CASES OF USE w ADEQUATE SKILL)? Do you agree or disagree, why etc? Thanks |
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 slpip3
join:2007-02-20
Springfield, VA | Re: [Help Me] dir-825 antenna, power, comparable stability dd-wr Of course 7db gain antennas are better than the stock 2-3 db gain antennas. However, the choice of a router is important too. You want to pick a stable router but you don't necessary to pick a dual band router (it's ok to select a dual band router) because lower frequency can go through the wall better than high frequency. Saying 2.4Ghz is better than 5Ghz when there is a wall in between. I used dd-wrt and tomato, both are very steady firmwares for my Buffalo routers.
Linksys makes good routers with high gain antennas, if you stay with dir-825, you should get the high gain antennas. I would use 2.4Ghz for concrete wall. I would use high gain antennas. Also I would put a tin can top under the router to provide a good ground signal for the antennas. Definitely you need to put the router in direct direction with the computer. |
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| reply to mikeo1313
Are those dual band antenna? The 5 ghz band won't pass through thick concrete with a lot of re-bar. I have cinder-block covered w/sheet rock walls in my apt. This is how they per code avoid having a sprinkler system in a 4 story building, every unit is fire isolated. Even the wall between living room and bedroom i.e. no re-bar though. Thus not a Faraday barrier, this is very likely your problem (construction material). My dual band works wicked great. Try as you may, you can not change the laws of physics. If you are in what is essentially a Faraday cage there is little you can do.
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DLink DIR-825 (B1) fw2.06NA / DAP-1522 (a1) fw 1.31 {2@5ghz bridge mode} / Clear Modem series G |
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 mozerdLight Will Pierce The DarknessPremium,MVM
join:2004-04-23
Nepean, ON | reply to mikeo1313
The dir-825 is a MIMO system - so your plan to use higher gain antennas will not work because of the way that MIMO WORKS.
You will get much better range etc if you pay much more attention to PLACEMENT and client capability.
Suggest that you learn about how the DIR-825 exploits MIMO, which schema it supports [Spatial Multiplexing or Beam forming or some combination of both] then make sure that your clients also exploite the same schemas and pay attention to placement recommendation made in the User Guide.
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David Mozer
IT-Expert on Call
Information Technology for Home and Business |
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