Weak wireless signal with dd-wrt and Asus RT-N18U

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goerz
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Joined: 21 May 2015
Posts: 5
PostPosted: Thu May 21, 2015 9:47    Post subject: Weak wireless signal with dd-wrt and Asus RT-N18U Reply with quote
Hi, I've just bought an Asus RT-N18U to replace an old Linksys WRT54GL fried by a power outage. I installed the recommended firmware (build 24160), but the wireless signal is so weak that it can be barely be received within 50cm. of the router. Using the stock Asus firmware, instead, the signal is very strong. I'd rather use dd-wrt than the stock firmware, because the latter is buggy and doesn't keep my settings, but I can't do without my wireless connection. Is this a common issue with this model, or are there any wireless settings I could try to improve my signal?
Thank you,
goerz
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goerz
DD-WRT Novice


Joined: 21 May 2015
Posts: 5
PostPosted: Thu May 21, 2015 23:17    Post subject: Reply with quote
I tried with the latest beta (r26497) and the wireless network is still crippled, it's impossible to connect from any distance. The signal jumps to normal levels only while the reset button is pressed. It looks like this router isn't really compatible with dd-wrt, unless there are some arcane wireless settings to modify.
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technik
DD-WRT Novice


Joined: 29 May 2015
Posts: 15
Location: Frankfurt, Germany
PostPosted: Mon Jun 15, 2015 15:21    Post subject: Re: Weak wireless signal with dd-wrt and Asus RT-N18U Reply with quote
goerz wrote:
...the wireless signal is so weak that it can be barely be received within 50cm. of the router...

I have the same issue. Hope someone will find the bug. Thank God I'm using it just as a wired router.
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T.F.7
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Joined: 10 Jul 2015
Posts: 9
PostPosted: Sat Jul 11, 2015 7:40    Post subject: Reply with quote
Same issue for me as well. Crying or Very sad
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Per Yngve Berg
DD-WRT Guru


Joined: 13 Aug 2013
Posts: 6870
Location: Romerike, Norway
PostPosted: Sat Jul 11, 2015 9:01    Post subject: Reply with quote
Have you set the TX Power?

http://tips.desipro.de/2014/02/12/wireless-starters-guide-for-first-time-dd-wrt-users/
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Per Yngve Berg
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Joined: 13 Aug 2013
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Location: Romerike, Norway
PostPosted: Sat Jul 11, 2015 9:03    Post subject: Reply with quote
Your build is very old.

ftp://ftp.dd-wrt.com/betas/2015/07-09-2015-r27506/asus-rt-n18u/
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Murrkf
DD-WRT Guru


Joined: 22 Sep 2008
Posts: 12675
PostPosted: Sat Jul 11, 2015 9:19    Post subject: Reply with quote
Per Yngve Berg wrote:
Your build is very old.

ftp://ftp.dd-wrt.com/betas/2015/07-09-2015-r27506/asus-rt-n18u/


Besides being newer, is this actually a better build than the one being used by the OP And have you actually tested this build on this router? There seems to be a general problem with this particular router:

http://www.dd-wrt.com/phpBB2/viewtopic.php?t=284274

And how does upping tx improve signal if rx is not also increased? Wifi is bidirectional.
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Per Yngve Berg
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Joined: 13 Aug 2013
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Location: Romerike, Norway
PostPosted: Sat Jul 11, 2015 13:05    Post subject: Reply with quote
Successful flash with Build 27413:
http://www.dd-wrt.com/phpBB2/viewtopic.php?t=284083
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goerz
DD-WRT Novice


Joined: 21 May 2015
Posts: 5
PostPosted: Mon Jul 13, 2015 14:39    Post subject: Reply with quote
Thank you all for your suggestions. I reverted to stock ASUS firmware for the moment, I can't seem to make the wireless connection work at all under dd-wrt, even when using the latest build.
Regards,
goerz
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hosco
DD-WRT Novice


Joined: 24 Aug 2015
Posts: 4
PostPosted: Tue Aug 25, 2015 9:26    Post subject: Reply with quote
goerz wrote:
Thank you all for your suggestions. I reverted to stock ASUS firmware for the moment, I can't seem to make the wireless connection work at all under dd-wrt, even when using the latest build.
Regards,
goerz

There is the solution http://www.dd-wrt.com/phpBB2/viewtopic.php?p=975069#975069
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