Broadcom Wireless 802.11n low Mbs speed

Hello All,
I just picked up a refurbished G500 and overall I'm pretty happy with it...with one major exception. The #1 criteria when I was laptop shopping was that it provided 802.11n support (my old laptop was just 'g').
Anyway, long story short, I am not experiencing any connectivity issues however I'm lucky if I connect at anything above 55 Mb/s. I switched over to my 802.11g router and my connection speed dropped down to 5 mb/s... so there is obviously an issue.
All suggestions are welcome, but let me rule out the typical initial responses:
* I have a Dell laptop that connects to my 802.11n router at 150Mbs so I know the router is fine
* I have tried the generic Windows Broadcom Driver
* I have tried the Lenovo Broadcom Driver for Win 7
* I have tried the Lenovo Broadcom Driver for Win 8
* I have tried the Lenovo Broadcom Driver for Win 8.1
Also note that I'm in I.T. but wireless isn't my strong point. When I first got the G500 before I did anything to it (so OEM image) the wireless connected low (Think the highest I saw it was 72 Mbs at one point).
I have since wiped that laptop and installed my own copy of Win 8 Pro (and then Win 8.1 Pro Update) and still getting the same speed.
So I feel like I have pretty much ruled out any OS issues (since I've been on 3 at this point). Drivers are always a possibility but I've tried everyone out there. And of course Hardware would be my last thought although it works.. just not that fast.
I'm also wondering:
* Is this card (Broadcom vendor Device ID 4727) even able to connect at that speed.
* Is the G500 wired with the required antenna's to get even 150 Mbs. From my understanding you must have 2 in and 1 out to get 150 but I could be wrong.
Oh, and as a last resort, would just replacing the stock WLAN with a better aftermarket be an option?

I have same problem with you when first use Broadcom 11n wireless card (only got constant 39Mbps). But I've fixed by changed wireless channel in wireless router to less intensity channel (1 or 2...) and set Broadcom driver option "Bandwidth Capability" to "11b/g:20/40Mhz". After that I can get wireless speed from 135 Mbps to 150Mbps.

Similar Messages

Problems connecting on Wireless 802.11n with my T61 with Intel Wireless AGN

Hi, I live in Thailand and have a similar problem as others with my Intel Wireless AGN connection as others. I have a D-Link Model DSL-2740B Rangebooster N ADSL2/2+ Modem Router. It is supposed to support 802.11n draft wireless connections of up to a maximum of 270 MBPS versus 54 MBPS for 802-11G wireless. Of course, I don't expect it to reach the maximum transfer speed, particularly here in Thaiand, however I would expect it to produce results better than the 54 MBPS rate for 802-11G. I first tried it on my ThinkPad T61 which incorporates Intel® Wireless WiFi Link 4965AGN. When connected, it shows a speed of 54MBPS (802-11G) instead of higher wireless 802-11n speeds. I've upgraded my router to the latest firmware and have tried different configurations with no improvement in performance. One think I have noted is that when I make an on-line configuration change to my router configuration then select "apply", immediately my ThinkPad rate changes to 150 MBPS momentarily then my connection is lost (to be expected as the router changes are being implemented), followed by reconnection of wireless signal only to return at 54 MBPS again. I also have an older ThinkPad model without built-in wireless capability so I purchased a Belkin wireless 802.11n USB adapter to connect to my router. Again, the maximum connection is at 54 MBPS. When I repeat configuration changes to my router as I did above, my ThinkPad connection momentarily changes to only 1 MBPS instead of 150 MBPS as in my other T61 ThinkPad then reverts back to 54 MBPS once the configuration changes have been completed. Has anyone successfully used wireless 802.11n successfully at the higher transfer rates (above 54 MBPS)? Is it possible that my TOT Goldcyber connection speed is artificially limited? I notice that my rated speed for my desktop computer connected to my same D-Link DSL-2740B only indicates a rated speed of 100 MBPS. I use Vista Home Premium 64-bit on my destop, Vista Home Premium 32-bit on my ThinkPad T61, but us Windows XP Professional on my older ThinkPad. I feel that my problem is either with my ADSL carrier (TOT) or compatibility with my D-Link DSL-2740B Modem Router and my ThinkPad T61 internal wireless card and/or Belkin wireless n USB adapter. IT-City is letting me swap out the Belkin USB for the D-Link Rangebooster n DWA-140 USB adapter next week when they restock. The only other think that I can think of is that wireless n just doesn't work in Thailand and that maybe I should just stick with wireless G and go with a higher powered wireless USB model such as the business rated EmGenius EUB 362 EXT. Has anyone used this model and had good success with it; I've heard that it is a long range model and has the capability of reaching 108 MBPS through some sort of magic? Looking forward to reading your replies and possible solution.
Pattayadavid

Hi!
Intel Wi-Fi cards support full 802.11n speed of 300 Mb/s working at 5 GHz range only. Your D-Link DSL-2740B works only in 2.4 GHz range. So to get 300 Mb/s you have to get another wi-fi router that supports 802.11n in both 2.4 and 5 GHz, for instance Lynksys WRT610N or Apple Airport Extreme or whatever.

Range Extender not working on Wireless 802.11n

I've started a new topic to ensure this gets the correct attention. For the back story see this forum topic. http://community.linksys.com/t5/Range-Expanders/Can-t-find-Range-Extender-after-installing-firmware-...
Long story short the RE1000 Range Extender is not working (connecting, extending) on Wireless 802.11n after the firmware upgrade. As a result the device is not useful because the devices that attempt to connect to it are NOT expecting the wireless level to change and thus just get stuck in limbo land.
My wifi network (as of writing this) SSID is called "SeriesOfTubez" and is broadcasting on b/g/n. However as you can see by the wireless network survey (from the router) all other devices connect on "n" but the RE1000 is only connecting/broadcasting on "b/g" (not "n")
Is there a setting somewhere to force it to use "n" or does Cisco/Linksys need to fix the firmware again to get it right? or do I need to take the unit back to the store and buy another brand that properly supports 802.11n?

Great to hear that, Steve. Keep your eyes open and observe your connection. Don't worry, Linksys Support is available 24/7. I've had a number of great support experiences from them even at ungodly hours!

Does 802.11n give a speed boost on the iPad?

I did some testing to see if I'd get a speed boost by enabling 802.11n on my Belkin F5D8233-4 router, which supports 802.11n draft specification. I have Verizon FIOS with 25Mbps download/upload. I also have the Verizon router, which only supports 802.11b/g, and I can switch which router I'm connected to in order to compare speeds of 802.11n and 802.11g. All tests were done less than 3 feet from either router.
Bottom line is that the iPad doesn't get any speed boost by using 802.11n, at least by using speedtest.net to do the testing.
The test I used was with the speedtest app for the iPhone. I made the Belkin a pure 11n router, and ran that app from the iPad. So the connection had to be 802.11n. Then I connected the iPad to my Verizon router, which had to be 802.11g, and saw virtually no difference.
I did the same test with a Windows laptop from my job that supports 802.11n. It connected locally to the Belkin router at 72Mbps according to the internal utility. Testing using speedtest.net indicated that using the 802.11n connection on the Belkin was 50% faster than the 802.11g connection on the Verizon router. (About 30Mbps for Belkin/802.11n compared to 20Mbps for Verizon/802.11g for downloads).
But with the iPad, doing the same test (switching from Belkin router to Verizon router), the speed didn't change. It actually seemed a little slower when I was on 802.11n, but repeated tests showed some variability, and the average was about 19Mbps.
I realize that the overall speed for the iPad when I'm in my house will get throttled by the FIOS connection max of 25Mbps (although it's interesting that with my MacMini, and the Windows laptop, when connected via 100baseT, I get 30Mbps from FIOS when they promise 25Mbps!). But I can't get the good results from the iPad using 802.11n that I see with the Windows laptop. I'd like to try a local speedtest using the local LAN. I installed Speedtest MINI on the MacMini, enabling the Mac as a server, and the Windows laptop did 72Mbps on the local LAN. But Speedtest MINI requires Flash in the browser, so I can't do that test on the iPad. And the Speedtest app for iPhone doesn't let you pick a local URL for the server.
So I'm now pretty sure that 802.11n isn't really working right on the iPad with my Belkin router, in terms of delivering increased performance. I've read other posts where people have looked at the transmit rate from the router side, but I really wish I could look at the transmit rate from the iPad (like I do in Mac OS X, or in Windows) to verify.
To be sure, I'd like to run a speedtest on my local LAN from the iPad. Has anyone been able to actually do some kind of test that verifies the speed of an iPad connection on a local LAN, and does that verification from the iPad, and not the router?
And finally, has anyone ever done a test that verifies that 802.11n from an iPad delivers a speed boost compared to 802.11g? Are there specific requirements on the router side that need to be satisfied so that the iPad gets a boost? I've read elsewhere where someone said that you only get the boost if using Apple's Airport Extreme as the router (so that you can't really get 802.11n on a non-Apple router), and I think I saw someone say that the router has to support communication over 5.0Ghz for the iPad to be fast on 802.11n. Has Apple ever said what are the real requirements for the iPad to be faster on 802.11n versus 802.11g?

To the contrary, my experience is that the "G" standard on WiFi provided MUCH faster speeds than the "N" standard on Wi-Fi. It makes no sense, I know, but it is true.
I was having horribly slow Wi-Fi speeds on my iPad2, despite a fast cable modem connection and a "N" generation Linksys wireless router (maybe 2-3 yrs old). Was achieving speeds of only 1.3Mbs -- slow enough that you couldn't watch YouTube videos. From hunting around on the web, I came across the suggestion to manually set the Wi-Fi router to the "G" standard (ie downgrade it from the faster "N" standard). Remarkably, I did it and it worked like a charm. I now get Wi-Fi speeds of about 12 or 13 Mbs, or 10x what I was getting before. It is an easy fix. And also I think the "G" standard is capable of 50Mbs so even though it is a slower and older standard, it is still way faster than anything you are likely to achieve as a home user. I think there is some glitch or oddity in the iPad and iPad2 which can cause it to perform very poorly with older "N" standard WiFi routers. New ones don't seem to have a problem.

Airport Express 802.11n and high speeds *impossible*

Hi there,
well I have been playing around for the last 24-48hrs with an AirportExpress 802.11n wiht the latest firmware on it, to achieve high speed wifi ~300mbps as 802.11n allows. The following hardware was used during this tests:
Airport Express Model: A1264 Firmware: 7.4.2
1) Macbook Pro AirPort Extreme (0x14E4, 0x88)|Broadcom BCM43xx 1.0 (5.10.91.26)
and an
2) 24" iMac - AirPort Extreme (0x14E4, 0x8E)|Broadcom BCM43xx 1.0 (5.10.91.26)
Goal: Achieve to establish a high speed wireless-n infrastructure network.
Comparing to: Ad Hoc Network Wireless-N iMac to Macbook Pro
Basic Ad Hoc Network Setup:
Macbook Pro:
PHY Mode: 802.11n
Channel: 11 (2.4Ghz)
Security: none
RSSI: -54
Transmit Rate: 130
MCS Index: 15
iMac 9.1:
Channel: 11 (2.4Ghz)
Security: none
RSSI: -48
Transmit Rate: 1117
MCS Index: 14
Testing: copy 1GB file via Finder Desktop to Desktop
Reault: achieved an avarage transfer-rate: 9.7MB/s
Infrastructure Tests:
1st Setup: identical setup with airport express
Configuration: Airport Express
Radio Mode: 802.11n only (2.4 Ghz)
Channel: 11
Security: none
Macbook Pro:
PHY Mode: 802.11n
Channel: 11 (2.4Ghz)
Security: none
RSSI: -36
Transmit Rate: 130
MCS Index: 15
iMac 9.1:
Channel: 11 (2.4Ghz)
Security: none
RSSI: -38
Transmit Rate: 130
MCS Index: 15
Testing: copy 1GB file via Finder Desktop to Desktop
Reault: achieved an avarage transfer-rate: 3.2MB/s
2nd Setup: airport express
Configuration: Airport Express
Radio Mode: 802.11n only (2.4 Ghz)
Channel: 11
Security: WPA2
Macbook Pro:
PHY Mode: 802.11n
Channel: 11 (2.4Ghz)
Security: WPA2 Personal
RSSI: -34
Transmit Rate: 130
MCS Index: 15
iMac 9.1:
Channel: 11 (2.4Ghz)
Security: WPA2 Personal
RSSI: -37
Transmit Rate: 145
MCS Index: 15
Testing: copy 1GB file via Finder Desktop to Desktop
Reault: achieved an avarage transfer-rate: 3.0MB/s
3rd Setup: airport express
Configuration: Airport Express
Radio Mode: 802.11n (802.11b/g compatible)
Channel: 11
Security: WPA2
Macbook Pro:
PHY Mode: 802.11n
Channel: 11 (2.4Ghz)
Security: WPA2 Personal
RSSI: -33
Transmit Rate: 130
MCS Index: 15
iMac 9.1:
Channel: 11 (2.4Ghz)
Security: WPA2 Personal
RSSI: -39
Transmit Rate: 145
MCS Index: 15
Testing: copy 1GB file via Finder Desktop to Desktop
Reault: achieved an avarage transfer-rate: 2.9MB/s
4th Setup: airport express
Configuration: Airport Express
Radio Mode: 802.11n (802.11a compatible)
Channel: Automatic
Security: WPA2
Macbook Pro:
PHY Mode: 802.11n
Channel: 36 (5Ghz)
Security: WPA2 Personal
RSSI: -48
Transmit Rate: 270
MCS Index: 15
iMac 9.1:
Channel: 36 (5Ghz)
Security: WPA2 Personal
RSSI: -46
Transmit Rate: 300
MCS Index: 15
Testing: copy 1GB file via Finder Desktop to Desktop
Reault: achieved an avarage transfer-rate: 5.5MB/s
Enabling/ disabling wide channels doesnt change the avarage transfer rate significantly.
These are just a few examples of all tests I have done, I have tried every possible configuration and took screen shots of almost 80% of the test (if someone is interested in reviewing this).
I couldnt find a single configuration in infrastructure mode that is as fast as the ad-hoc connection, so I assume either apple's setup for ad hoc and using channels is different to infrastructure or the airport express simply is unable to perform the same way as the wifi cards being used inside my Macs (which is my conclusion unless someone proves me wrong).
-------------------------------------------------------------------- Keep in mind, my findings show a 100% faster network in Ad hoc mode on a 2.4 Ghz connection
This is quite unsatisfying as I have bought the airport express on Feb 9th 2010 and it was the latest available model according to local genius bar.
So to quote apple: "The AirPort Express Base Station is based on an IEEE 802.11n draft specification and is compatible with IEEE 802.11a, IEEE 802.11b, and IEEE 802.11g." yes it might be compatible but doesnt allow you to fully operate at those specifications or has anyone been able to achieve this somehow?

why didnt I find this any earlier ...
http://www.applesource.com.au/mac-accessories/soa/Apple-AirPort-Express-Base-Sta tion-802-11n-/0,2000451112,339287629,00.htm

Is wireless 802.11n better than Draft-n?

I have altered my network following new supply of optical-fibre connection and have found a speed slowdown which may be due to one old Airport Express in the network which is rated as 'Draft-n'. Will it be worth upgrading this unit to a new on rated as 802.11n?

Will it be worth upgrading this unit to a new on rated as 802.11n?
Not really, if this is all that you are looking at, since the standards adopted were essentially the same as "Draft-n".
However, the dual band capability of the new Express will allow you to use both the 2.4 GHz and 5 GHz bands simultaneously. If you are using dual band AirPort routers elsewhere on your network, the new Express version will provide the same simultaneous dual band wireless performance.

AirPort 802.11n ... speed

I just upgraded to 802.11n, but it seems much slower than the old AirPort g. Is this just my problem or does "n" work differently?

I just used the AirPort Client Monitor to see what's up. Here is what I'm getting.
Strength: -40dBm
Noise: -90dBm
A signal with a strength of -40 dBm and noise of -90 dBm would equate to a Signal-to-Noise Ratio (SNR) of 50 dB -- an excellent value for WLANs.
SNR is the signal level (in dBm) minus the noise level (in dBm). In your example, a signal level of -40 dBm and a noise level of -90dBm yields a SNR of 50dB.
The SNR, as measured from the iBook, decreases as the range to the base station increases because of applicable free space loss. Also an increase in RF interference from microwave ovens and cordless phones, which increases the noise level, also decreases SNR.
SNR Guideline
o 40dB+ SNR = Excellent signal
o 25dB to 40dB SNR = Very good signal
o 15dB to 25dB SNR = Low signal
o 10dB to 15dB SNR = Very low signal
o 5dB to 10dB SNR = No signal
Transmit Rate: 52Mbps
54 Mbps would be the highest possible bandwidth for a 802.11g wireless network ... so getting 52 Mbps would be excellent.
To achieve 130 Mbps, the wireless network would have to operate at in either 802.11n only (2.4 GHz) or 802.11n only (5 GHz) with wide-channel disabled radio modes. To achieve 300+ Mbps, the network would need to be operating in the 802.11n only (5 GHz) with wide-channels enabled radio mode. In addition ALL wireless clients must be capable of either of these as well. Any "b" or "g" clients will impact the "n" network overall bandwidth performance.

Wireless 802.11N

I just read about the Wireless N technology, truely amzing stuff. Just a question, if the technology has been around for so long, why does apple not use it in their laptops?

Did some research into this topic. Turns out some, if not all of the MacBook Pro's with the Core 2 Duo processor have a new Airport card manufactured by D-Link that supports 802.11n. I set my router to just use 802.11n but the MacBook did not connect, I later find out that Mac OS X doesn't have a driver that supports 802.11n.
Maybe Leopard will introduce this new wireless standard.

Z61p wireless 802.11n

Hello,
maybe someone knows is it possible to upgrade my thinkpad with wireless card which support 802.11n?
If it is, where could I look for more info or maybe someone even knows wireless card part code?

AFAIK, Z61p was never offered with a "n" card.
Now, you can get around that with a modded BIOS. However, I haven't seen one for your machine type anywhere.
Good luck.
Cheers,
George
In daily use: R60F, R500F, T61, T410
Collecting dust: T60
Enjoying retirement: A31p, T42p,
Non-ThinkPads: Panasonic CF-31 & CF-52, HP 8760W
Starting Thursday, 08/14/2014 I'll be away from the forums until further notice. Please do NOT send private messages since I won't be able to read them. Thank you.

Wireless 802.11n card for iMac G5

I am running a 802.11n wireless network (linksys) with WPA Personal security. Is there any USB or internal adapter to allow a wireless connection to my home network. I have a iMac G5 Power mac 8.2 and the airport card worked fine with the g class network? Apple's official stance is that they do not provide or support any external or 3rd party device to assist. They suggest I drop back dwon to a g network. So much for cutting edge...

rottencore, Welcome to the discussion area!
There is no internal solution. For an external USB solution, look at Quickertek.

AirPort Extreme (802.11n) File Transfer Speeds Over Ethernet

I tested the transfer time for a 1.33GB file from one computer to another under four conditions. Both computers support gigabit Ethernet, and all cabling is Category 6.
Condition 1: Both computers were directly connected to a pre-gigabit AirPort Extreme Base Station (802.11.n)
The transfer time was 128 seconds.
Condition 2: Both computers were directly connected to an 8-port D-Link DGS-2208 gigabit switch, which in turn was connected to a pre-gigabit AirPort Extreme Base Station (802.11.n)
The transfer time was 72 seconds.
Condition 3: Both computers were directly connected to an 8-port D-Link DGS-2208 gigabit switch, which in turn was connected to a gigabit AirPort Extreme Base Station (802.11.n)
The transfer time was 55 seconds.
Condition 4: Both computers were directly connected to a gigabit AirPort Extreme Base Station (802.11.n)
The transfer time was 28 seconds.
Tentative Conclusions: Using a gigabit switch as the parallel connecting device when the router is pre- or non-gigabit is helpful. Using a gigabit switch as the connecting device when the router is also gigabit is hurtful with respect to transfer time.
I would appreciate any comments.

I re-ran the tests several times, taking care to "pre-warm" the connections by rebooting the router (and the switch when applicable) and making one false start, stopping the first transfer and then starting the timed transfer.
The transfer times when no switch was involved were virtually the same as I reported earlier, with the gigabit router significantly outperforming the pre-gigabit AEBS (it was 5.73 times slower). Interestingly, the transfers via the gigabit switch were virtually as fast as a pure transfer using only the gigabit router.
And there was no difference in the gigabit switch-employed transfer times regardless of whether a pre-gigabit or gigabit router was used. Here is my revised conclusion:
Using a gigabit switch with Apple's pre-gigabit 802.11n router overcomes the slowness associated with a pre-gigabit router provided that pre-warming techniques are employed.

Compatible Gigabit Wireless 802.11n Routers?

Hi,
Is anyone aware which currently available routers with gigabit ports & 802.11n are proven to work with .n enabled MacBook Pros?
I realise that depending on where you are in the world, not too many are even on the market as yet but I've read about a few, namely the Linksys WRVS4400 and the D-LINK DIR655 which are available but I can't find out if they will actually work with the MacBooks. Linksys are also bringing out what look like 2 great routers in the near future (WRT350N & WRT330N) but again, who's to say if they will actually work with non-Linksys kit.
Any experiences appreciated.
Cheers
Macbook Pro C2D, 2.33GHz Mac OS X (10.4.8)

Apple's new Extreme Base Station.
Its not gigabit though, is it...?

Wireless 802.11n on macbook with Leoopard

I m using Macbook core 2 duo, 2.0ghz and 1G Ram, with installed Leopard, i do have a problem on installing the 802.11n enabler that i purchase in apple through online, previously as i was using Tiger, no problem when installing it , but after changed to Mac OS X Leopard, the setup did say that it is not compatible with smth... so any brilliant idea from u all ?? thx for helping me yea...

Leopard has the enabler built-in.
Now, whether Leopard works reliably in 802.11n mode is another matter that is being discussed in dozens of threads on this board.

AirPort Extreme 802.11n - disappointing connection speeds in Windows

I have just set up a brand new AirPort Extreme and, with my MacBook Pro running OS X10.6.5 I am getting excellent reception and a full 300 Mbits/s connection speed throughout the house. When I boot the MBP into Windows 7, though the reception is still very good, I only get 130 Mbits/s maximum speed. Is there any good reason why performance is so much poorer in 7 than in OS X using the same hardware? All drivers are up to date as far as I can tell.

It seems my initial 300 Mbits/s connection speed was just a short lived phenomenon and now my connection seems to have settled at 130 Mbits/s for both OS X and 7. I also logged my iMac on to the wireless network (though it is usually hard wired) and that initially declared a speed 270 Mbits/s, then briefly 300, but quickly reduced to 130 Mbits/s despite being right next to the AirPort unit. Is there anything I can do to try to restore the higher speeds?

Ralink Wireless 802.11n LAN Card built in

I accidentally deleted my network wireless connection I was using on my Ralink Wireless Hotspot (which is built into my Windows 7 HP Pavilion Desktop). When I try to set up a new wireless connection it never finds the connection. I know it is possible
to set up a wireless connection to this computer, but now when it scans to set up a network it picks nothing up. Could it be my Ralink Wireless card or something else. Please help me set up a wireless hot spot and/or a new wireless network connection.

Install the drivers for the hardware. You'll be able to download the same from HP's website.
Arnav Sharma | Facebook |
Twitter Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members
reading the thread.

Broadcom Wireless 802.11n low Mbs speed

Similar Messages

Maybe you are looking for