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Novice
Posts: 0
Registered: ‎2012-02-19

5 GHz channel does not appear

I have set up my new N600 router and it seems to be functioning OK - the 2.4 GHz green light is on and the 5 GHz blue light is on and I am accessing the internet via the 2.4 GHz channel. The 5 GHz channel, however, does not exist as far as any of the wireless devices in the house are concerned. My laptop, my old laptop, my printer, all show the 2.4 channel and also, as usual, all the wireless networks in the area (my neighbours). But the 5GHz does not exist as far as any search for local networks is concerned. The blue light is constantly on, not flashing, the 2.4 is fine and gives me a connection. Why no 5GHz among the "available wireless networks" on Windows 7 64 bit and on XP (the old laptop)??
Nick Hudd (Kent UK)
Luminary
Posts: 89,285
Registered: ‎2009-01-27

Re: 5 GHz channel does not appear

you must have dual band wireless adapter on pc or other wifi device to use 5Ghz
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June Mizoguchi-
Apprentice
Posts: 998
Registered: ‎2011-06-12

Re: 5 GHz channel does not appear

I have experienced this a couple of times in the past, where one or the other channel wasn't broadcast.

Firstly do ensure that you have the latest firmware version installed (v1.0.0.17 or one of the beta versions).

Next navigate to the following pages:
http://www.routerlogin.net/RST_status.htm
http://www.routerlogin.net/RST_statistics.htm

Do they show if the channel is being broadcast? I found this wasn't the case with one of the screens when mine was playing up.

I had to power cycle the router to resolve the issue.
Tutor
Posts: 4
Registered: ‎2012-02-03

Re: 5 GHz channel does not appear

You could try a couple of things to see if you have 5GHz kit if you're not sure.

You could try a program like inSSIDer and it should show tabs at the top of the graphs for 2.4 & 5GHz if your laptop can do it.
http://www.metageek.net/products/inssider/

You could change the name of the 5GHz SSID so that it is obvious which is which in Windows.

You could look in your device manager and have a look at the networking section and see what wireless adapter you have - some actually say 802.11a/b/g/n - you are looking for one with 'a' for 5GHz. Otherwise google the adapter if it only gives the name.
Novice
Posts: 0
Registered: ‎2012-02-19

Re: 5 GHz channel does not appear

Apologies for my lack of response, to those who responded to my problem - I have been out of action (back trouble - not a new problem). Even with a laptop, it is not easy to sort complex issues while flat on the back!!
The issue becomes stranger. I have switched on for the first time in weeks my old laptop - runs Win XP and only used for astronomy purposes now. I switched on to ensure update of security software etc as it hadn't been used for weeks. That very old laptop immediately identified the 5 GHz channel from the router, but the signal does not seem any stronger than I used to get from an N300. Other devices (including my iPhone and the new Win 7 64 bit computer) pick up all the local wireless networks, but not my own 5 GHz.
I'm doing something wrong but I cannot figure what.
Nick Hudd
Apprentice
Posts: 998
Registered: ‎2011-06-12

Re: 5 GHz channel does not appear

Could I suggest the following?:



    If that fails, redownload the most recent firmware version (v1.0.0.17, unless you are on a Beta firmware). Install it on your router, then repeat steps 2 & 3 above.
Tutor
Posts: 4
Registered: ‎2012-02-03

Re: 5 GHz channel does not appear

Off the top of my head i think iPhones are only 2.4GHz capable. As for your new Win 7 laptop are you able to check if the wifi card supports 5GHz? Not all cards do. 5GHz will (due to the physics of radio waves) give a weaker signal at further distances from the router than 2.4GHz. The advantage is that very few people use 5GHz at the moment so there is less interference with other signals.
Apprentice
Posts: 998
Registered: ‎2011-06-12

Re: 5 GHz channel does not appear

adrenalize wrote:
Off the top of my head i think iPhones are only 2.4GHz capable. As for your new Win 7 laptop are you able to check if the wifi card supports 5GHz? Not all cards do.


Well spotted. The iPhone 4S does not support 5GHz, only 2.4GHz. http://www.apple.com/iphone/specs.html

The iPad 2 does support both 2.4 & 5GHz channels, although I'm not so sure about the iPad (v1).
Luminary
Posts: 89,285
Registered: ‎2009-01-27

Re: 5 GHz channel does not appear

Correct. iPhone does not support 5ghz.

OP- Knowing which products supports both band will be your first steps. You would be wasting your valuable time.



5GHz will (due to the physics of radio waves) give a weaker signal at further distances from the router than 2.4GHz. The advantage is that very few people use 5GHz at the moment so there is less interference with other signals.


Correct as well. Indeed if you live in "saturated" area you may want to use 5Ghz on some devices to precent from interferences as 5Ghz offers more channel prevent the issues with other wireless routers.
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June Mizoguchi-
Luminary
Posts: 89,285
Registered: ‎2009-01-27

Re: 5 GHz channel does not appear

Scubbie wrote:
Well spotted. The iPhone 4S does not support 5GHz, only 2.4GHz. http://www.apple.com/iphone/specs.html

The iPad 2 does support both 2.4 & 5GHz channels, although I'm not so sure about the iPad (v1).

Ipad 1
http://support.apple.com/kb/SP580

Smiley Happy
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June Mizoguchi-
Novice
Posts: 0
Registered: ‎2012-02-19

Re: 5 GHz channel does not appear

A great deal of useful information. Thanks to everyone, and apologies again that I am slow in response. Using a computer is not easy when you can't sit, due to the back issue!!
iPhone issue now clear. I am not sure about the Win 7 machine. If I can't determine myself whether 5 GHz is suppoprted then it's back to PC World for advice. And my understanding is that for strongest signal I may be best off on the 2.4 channel anyway?
Many thanks, guys
Nick
Luminary
Posts: 89,285
Registered: ‎2009-01-27

Re: 5 GHz channel does not appear

2.4Ghz is stronger so if you do not have an issue ,stick with 2.4Ghz
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June Mizoguchi-
Apprentice
Posts: 998
Registered: ‎2011-06-12

Re: 5 GHz channel does not appear

Most Laptops sold in the shops come with WiFi n that only works at up to 150mb/s on the 2.4GHz channels. You will need to look at an adaptor that supports both 2.4 & 5GHz channels. There are a few around, but make sure that you get the correct one as there are a handful of different types available.

Whether you go to PC World, do it yourself or get someone locally to do it for you is your choice. I went for the last two options.

I replaced the adaptor on my main laptop myself, but had to resort to someone locally for my other laptop as I couldn't source a suitable card myself. The one he found changed the laptop's card from a WiFi g to a 300mb/s on the 2.4GHz only.

jmizoguchi wrote:
2.4Ghz is stronger so if you do not have an issue ,stick with 2.4Ghz


This is true.

If you live in an area where there are a lot of WiFi routers and don't have an signal issue on the 5GHz channels, then I have personally found that it is much better.
Aspirant
Posts: 10
Registered: ‎2012-03-14

Re: 5 GHz channel does not appear

despite having various laptops with wireless n etc, most of them only see the 2.4ghz ssid. unless you specify a channel, other than AUTO, under 'wireless settings', you will not achieve up to 150 mbps either. (seem to remember they only showed 65 mbps on auto).

in fact only my dell vostro 1400 (it's still on xp, so it must be a few years old now!) can see the 5ghz channel, and i think that's because the wireless card is a/b/g.
Netgear DGND3700 v2, OS in use: Win 7, Win XP, OSX, Ubuntu, Chromium Lime, Jelly Bean 4.2.1, and Raspbian “wheezy” on a Raspberry Pi
Luminary
Posts: 89,285
Registered: ‎2009-01-27

Re: 5 GHz channel does not appear

i think that's because the wireless card is a/b/g.


not I think.. It is.. 802.11a is 5Ghz/54Mbps support.
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June Mizoguchi-
Aspirant
Posts: 10
Registered: ‎2012-03-14

Re: 5 GHz channel does not appear

thx for that, just reading through your signature links Smiley Happy
Netgear DGND3700 v2, OS in use: Win 7, Win XP, OSX, Ubuntu, Chromium Lime, Jelly Bean 4.2.1, and Raspbian “wheezy” on a Raspberry Pi
Aspirant
Posts: 1
Registered: ‎2012-03-27

Re: 5 GHz channel does not appear

Hi, I'm a noob here and have been searching for the same issue, i.e my 5ghz appears to have stopped working, or has not been working. can anyone tell me if the Xbox 360 supports 5Ghz? or PS3? My Xbox was running fine (on-line) for about three weeks after purchasing the DGND3300v2 but lately this, and everything else in the house has slowed to a crawl with wifi almost unobtainable on the xbox. I tried reseting the router and going back through set-up but this appears to have made the 5ghz completely invisible. Although after reading through this thread I think I may well have been on 2.4 with a very good connection. So can anyone help me explain why I now have a lousy connection?? Smiley Sad
Luminary
Posts: 89,285
Registered: ‎2009-01-27

Re: 5 GHz channel does not appear

Built in wifi does not support 5Ghz is normal
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June Mizoguchi-
Apprentice
Posts: 998
Registered: ‎2011-06-12

Re: 5 GHz channel does not appear

I don't own an Xbox, but looking at the Wikipedia page for the Xbox 360, it does appear that it can support the 5GHz channels.

http://en.wikipedia.org/wiki/Xbox_360

However after further reading, it appears that the older models do support the 5GHz frequency, but later models do not.

For reference there are quite a few other devices on the market now that do support the 5GHz channels. iPads have done so for some time now, as do the latest iPhones.

I have a Samsung Galaxy S ii which does support the 5GHz channels.

The 'Wifi analyzer' gadget that I installed on it does pick up the 5GHz signal from my router and also some that are working in town too.
Aspirant
Posts: 469
Registered: ‎2011-06-03

Re: 5 GHz channel does not appear

the older wirelesses for the xbox don't but the black adapter and the xbox slims do . Still they don't do any good if you have it in an enclosure.

I never had a reason to use 5ghz with the xbox but depending on placement that may cause some finding issues for your device to router.
Aspirant
Posts: 2
Registered: ‎2015-09-12

Re: 5 GHz channel does not appear

The iphone GHz does not matter. That's why you have a router to travel 5Ghz to the 2.4Ghz of the phone. Don't get it confused. It should provide 5Ghz through the router. I use to be able to use my wifi from the park down the street. I wa messing around with the setting I remember, and now I cant use the 5Ghz and its not appearing also. I will call customer service and get it sorted. However, it was appearing at one time at 5Ghz.

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