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[davevt31]

The DWA-160 uses Dual-Band to achieve maximum speeds, since the 655 is only 2.4 you won't see 300 with that adapter.  If you want max speed with that adapter you need a Dual-Band router (855 or 825)

[Another Joe]

I disagree with you. I had the DIR-825 before and had to switch to the DIR-655 but that's another story. The DWA-160 connects to either the 2.4 or 5.0 ghz frequencies, so does not uses both at the same time. This adapter is also listed as one of the recommended equipment in the "works with" section in the dlink website so it should be capable to connect at 300 Mbps ALL THE TIME. I do achieve 300, the problem is that does not keeps the connection for long and bounce back to anything lower until it sets at 130 Mbps.

[thecreator]

Hi Another Joe,

Uncheck Enable Auto Channel Scan. and manually select the highest channel and leave each channel there for one day and see what happens.

When I had Enable Auto Channel Scan checked, I could not connect at 300 Mbps when viewed from the computer.

When viewing from the Router's http://192.168.0.1/Status/Wireless.shtml the speed wavers. From actively using the connection or its idle speed. It does not need to have a constant speed of 300 Mbps.

[davevt31]

"Works with" has nothing to do with getting the 300 speed . Just means that it will pick up a signal from the router.  The overview of the 160 specifically mentioned the 825 and 855 that's why I mentioned them.

This is right the DWA-160 product page:

* Maximum wireless signal rate derived from IEEE Standard 802.11g, 802.11a, and 802.11n specifications. Actual data throughput will vary. Network conditions and environmental factors, including volume of network traffic, building materials and construction, and network overhead, lower actual data throughput rate. Environmental factors will adversely affect wireless signal range. Wireless range and speed rates are D-Link RELATIVE performance measurements based on the wireless range and speed rates of a standard Wireless G product from D-Link. Maximum throughput based on D-Link 802.11n devices.

[Another Joe]

davevt31 - Your quote from the DWA-160 page does not says it uses both bands to achieve 300. In fact, I could change which band to use under device properties. I tried selecting 2.4 only and did not made a difference versus 2.4/5.0. Thanks for helping.

thecreator - I'll try your recommendations and report back.

[SomeFatGuy]

I just want to say when I first bought my 655 I bought a linksys WUSB300N and when it connected an N speed it would drop to like 12mbps so I would connect at G to get a faster speed. Later I bought a DWA-140 (installed with the ralink drivers) and all my wireless speed problems went away.

With the DWA-140 I now connect between 270-300 100% of the time.

[davevt31]

Use the program INSSIDER to check what channels any neighbors might be using.

[Another Joe]

That's an excellent tool, I was able to see twice the amount of networks than with dlink or windows connection utility. I picked a channel that nobody was using (Ch. 8 ). The connection was fluctuating between 270 to 300 for an hour approximately but went down to 130 again. When idle it could go down to 58 Mbps. I just bought a DWA-140 on ebay to check if the DWA-160 does not work as expected with this router. I'll report back later.

[Cobra]

The problem is most likely because of the WiFi good neighbor policy.

Even if you set the router for 40MHz it will fall back to 20Mhz when/if it is interfering with other 2.4 networks in your area.

You will not get N speeds when the router falls back.

[Another Joe]

I tried all the recommendations you guys gave me and still with the same issue. I tried also the DWA-140 and the problem persists. Any other advice? How can I get 300 Mbps? Did anyone found the issue (ie. 88keyz)?

Somebody mentioned using the DWA-140 with ralink drivers. Does anyone know where I can find them?

[thecreator]

I tried all the recommendations you guys gave me and still with the same issue. I tried also the DWA-140 and the problem persists. Any other advice? How can I get 300 Mbps? Did anyone found the issue (ie. 88keyz)?

Somebody mentioned using the DWA-140 with ralink drivers. Does anyone know where I can find them?

Hi Another Joe,

I can't answer that, but I have a D-Link DIR-655 A3 Router and installed in my Wireless Computer is a D-Link DWA-552 Wireless Ethernet PCI Adapter with 3 Antennas.

From the Tips as the mouse passes over the Wireless Network Connection, its speed is shown at 300.0 Mbps.

In the Router's Settings Status Page, it shows 270 Mbps connection.

What version of the DWA-140 are you using? DWA-140 or DWA-140 REVB?

Have you played around with the positioning of the Antenna on the D-Link Router?

Try it.

[88keyz]

I tried all the recommendations you guys gave me and still with the same issue. I tried also the DWA-140 and the problem persists. Any other advice? How can I get 300 Mbps? Did anyone found the issue (ie. 88keyz)?

Somebody mentioned using the DWA-140 with ralink drivers. Does anyone know where I can find them?

No matter what anyone else says I know what I've experienced and the rev.B series hardware doesn't maintain 300Mbps like the rev.A series hardware does. 

I have had some success using InSSIDer to scan the channels of other AP's in the area and I found that almost every other AP was on channel 1, 6 or 11.  By setting channel 8 manually I was able to maintain 300 Mbps for a much longer period of time.  I believe this is due to a more strict good neighbor policy on the rev.B hardware compared to the rev.A hardware.  Rev.A hardware would maintain 300 Mbps under almost any circumstances this doesn't appear to the case with rev.B hardware. 

To get the best results with InSSIDer I would suggest installing it on a notebook/netbook and getting up as high as you can inside your home or apartment (ie. top floor of your house or nearer the ceiling in your apartment) to help you find the most AP's.  On the second floor of my house I was able to detect 24 AP's, in my basement only 5.  Then analyze the channel traffic and pick an unused channel if available.  Reboot your router and hope for the best.  Try to avoid 1, 6 and 11 as these seem to be default settings on many, many routers.

[thecreator]

That's an excellent tool, I was able to see twice the amount of networks than with dlink or windows connection utility. I picked a channel that nobody was using (Ch. 8 ). The connection was fluctuating between 270 to 300 for an hour approximately but went down to 130 again. When idle it could go down to 58 Mbps. I just bought a DWA-140 on ebay to check if the DWA-160 does not work as expected with this router. I'll report back later.

Hi Another Joe,

http://forums.dlink.com/index.php?topic=616.0

3) The channel width needs to be set to 20/40Auto, if it is not, the adapter will report a connection speed of 130Mbps. This is a feature that was added for compatibility with Intel 802.11N adapters, as they only operate on a channel width of 20. 

and

Note: Not all Intel adapters are the same as D-Links' N line. Some Intel adapters do not support the broader 40 Channel Width option. This (by design) limits their connection speed to 130. Check the specifications of your Intel adapter to ensure that it is capable of bonding on the 40Mhz range to achieve the full 300Mbps

-Lycan

If you are using a D-Link Router with a D-Link Adapter and only achieving 130 Mbps, your Router may be defective or the adapter may be defective, in that it can't stay in the broader 40 Channel Width.

Hence, you are seeing 130 Mbps.

[Another Joe]

I'll try contacting D-link customer service to see if they can figured it out or replace the router. Thanks.

[Doctor Doom]

Cobras post is right. Please refer to http://www.wi-fi.org/knowledge_center_overview.php?type=2

I heard Wi-Fi CERTIFIED n products can cause interference problems with other Wi-Fi networks. Is this true?

"In some configurations, Wi-Fi CERTIFIED n can interfere with other Wi-Fi networks when these products are trying to achieve the best performance using 40 MHz channels in the 2.4 GHz band.  However, all products that are Wi-Fi CERTIFIED n that can operate in this mode are required to implement a "good neighbor" protocol that helps ensure interference is not a problem.  This is another important reason to buy only Wi-Fi CERTIFIED n  equipment. "

Basically older Draft-N routers and older revisions did not necessarily require a forced good neighbour policy. Wi-Fi certified N products can co-exist with 20/40 only if the router or AP determines there are no chance for conflict.



This mechnism does not apply with the 5ghz band.