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[clemenza]

Hello,

I have Dir-605 H/W rev A1, FW v1.12 (as the device was shipped with), ISP is cable.

Created simpliest network for home use to connect home pc over wlan, but have noticed that wi-fi signal strenth is very poor, although there is no big distance - maybe 8 meters between router and pc - and there is no solid wall between, just bend from one room to another (so 3m from the bend point, and then other 5 meters to the PC).

PC application shows signal quality at the wlan card is about 30-40%, and problem is that there are lots of tx error packets, and connection is being restarted all the time (from 10 to 15 minutes) - so it is not stable at all.

I measured wi-fi signal quality with my android pc and app like wi-fi analyzer, and found that channel 1 which is used by default is ok, and that chanell 13 was least occupied, but swithcing to that channel didn't made any imrpvements upon signal .. anyway in the recepient point signal level is about -75dBm, and it is -40dBm just next to router .. so that confirms that signal quality situation.

in Router's 'advance wirelles settings' everything is as is by default :transmit power is 100% and so on, as the default values are (I am not sure which value is for what so didnt tried to change those)

so, I can't believe that there is such significant signal drop on such short distance, and is there some solution than to replace router?

[FurryNutz]

Link>Welcome!

• What region are you located?

Internet Service Provider and Modem Configurations

• What ISP Modem Mfr. and model # do you have?

Wireless Configurations
Links>Wireless Installation Considerations and Managing Signal Congestion

• Ensure the default (dlink) SSID name is changed. Can be anything and not something thats already in use by any neighboring WiFi routers. Under Setup/Wireless/Manual.
• What wireless modes are you using?
• 2.4Ghz Routers only: Try single mode G or N or mixed G and N?
• Channel Width set for Auto 20/40Mhz or try 20Mhz only.
• What security mode are you using? Preferred security is WPA-Personal. WPA2/AES Only. Some WiFi adapters don't support AES, so you might want to try TPIK only or Auto TPIK and AES.
• What wireless devices do you have connected?
• Any cordless house phones?
• Any other WiFi routers in the area? Link> Use InSSIDer to find out. How many?

[clemenza]

ISP is serbian broadband (www.sbb.rs) and I use the cable modem got from them directly - Cisco EPC3208
(btw I do not enconter any problems with the service provider)

1) default SSID is changed, of course.
2) wireless card in pc is connected using mode 11g (as read from dlinkrouter/status/wireless), and in advanced wireless settings it is as is by default: 802.11Mixed(n/g/b), switching to 802/11Mized(g/b) didn't got any better signal strength.
3) channel width (bandwidth) was set to 20 Mhz, switching to 20/40 didn't got any better signal.
4) I do use wpa/wpa2 (security mode is set to wpa/wpa2 wireless security (enhanced)), and cipher type is AUTO (TKIP/AES)
5) I do connect PC over TP-link wireless card 802.11 b/g, and over android phone
6) panasonic dect phone base is just next to the router, I turned off power supply from it, but signal remained the same - poor.
7) there are 2 other routers in the area, one is on -88dBm, and other is below -90dBm.

Thanks again for considering my problem, I hope I provided accurate information.

[FurryNutz]

Does changing to Single mode G, 20Mhz and WPA2 and TPIK only and setting on manual channel 1, 6 or 11 do anything?

[FurryNutz]

Go into Advanced/Advanced Wireless.
Wireless Mode: Should be Mixed ALL modes

Band Width: Should be Auto 20/40Mhz
 
STBC: Disabled

20/40MHz Coexist: Disabled

Short Guard Interval : Uncheck.

Save settings and reboot the router. Do these do anything?

[clemenza]

hi,

I did exactly as you recommended in both posts:

Wireless Mode: 802.11 mixed (n/g/b), Band Width:  Auto 20/40Mhz, STBC: Disabled, 20/40MHz Coexist: Disabled, Short Guard Interval : Uncheck.

And there was no improvements ..

Also changing to Single mode G, 20Mhz and WPA2 and TPIK only and setting on manual channel 1, 6 or 11 does not help at all ..

so, as I see, changing all those params didn't affected signal strength at all. .

May I consider that my device is faulty in some way, since as I described, it cannot deliver better signal in max 10 meters range with 90 degrees curve, with no solid walls in the way ?

[FurryNutz]

You may be hitting a upper range area of the router. However the only way to test this to be sure that your router isn't faulty would be to test another 605L or a different DIR series router, maybe a like a DIR-636L or 826L. Can you move the router any closer to see if the signal gets better as a test? Or move the device closer to the router.

1 Maximum wireless signal rate derived from IEEE 802.11 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.

[clemenza]

well, does it count if I use decent android phone with wi-fi analyzer app?

I have noone to borrow from dlink router, but will borrow some other (even cheaper), to see it's results - as I noted, there is no many other wi-fi signals around (just 2 or 3), and there are no any walls in my flat between business ends, so after I reading that this model can cover 6 bedrooms house, I can't be very happy with my situation

I assume it has to be accurate enough, for my needs, I can measure how signal level drops by just moving away from the router, in straight line with no objects in between.

Also, I don't complain about throughput, but about signal strength/stability, which reflects in losing connection with client .. anyway will measure today afternoon signal level, and than you could see how it is ..

[FurryNutz]

And you might test another 605L or a different DIR series router and see if there is any differences.

[clemenza]

thanks again .. I unfortunately have no other D-link router to borrow and to compare ..

so, will try to replace client card (that TP-link I use right now seems a bit oldish) with some USB wireless adapter (think that it will be also D-link DWA-125), and see whether the connection will remain stable although there is relatively poor signal. . . or if I got angry enough, will introduce one heavy duty AP I own as the repeater, and then have the desired signal

anyway, a bitter taste remains, after reading all the reviews of this router, which said 'great coverage' etc, and in my case it's not even close ..

[FurryNutz]

What happens if you test the router at 4-5 meters. Keep us posted on testing with a newer adapter. I would phone contact D-Link support and ask them what is the recommended distance between the client device and the router.

Let us know how it goes.

[clemenza]

finally got my lenovo laptop home, and via it's integrated wlan, measuirng with same software (inSSIDer), from pretty much same place where desktop PC is, I have around -50dB, and desktop (old internal tp-link card) has -75dB ..

some other network from neighbhood is -59 on laptop and -77 on destkop ..

so - bottomline, I have to aplogize for suspecting to D-link, since with good adapter, everything is fine, so I will replace it ..

thanks again for support

[FurryNutz]

Glad you found additional information to your situation.
Hope the new HW for your PC works better for you.

Enjoy.