Increase the sensitivity of Asus WL-500gP Hardware mod.

[Floche]

Hi guys
I have read this topic and the topic on dd-wrt website, but i didn't undestand the best way to increase the rx :
- replace R17 for a 62ohm ?
- rotate the capacitors c93 and c94 ?
- or both ?

Thanks


ps : sorry for my language i'm french

[Serge_K]

Hi guys
I have read this topic and the topic on dd-wrt website, but i didn't undestand the best way to increase the rx :
- replace R17 for a 62ohm ?
- rotate the capacitors c93 and c94 ?
- or both ?

Thanks


ps : sorry for my language i'm french

First option is correct.

[Pim Borst]

Hi there,

I just finished the R17 mod for my WL500gP.
Noise level went down from -98 to -84

I simply soldered a 68 ohm SMD resistor parallel to R17:
Solder one side of the new resistor to the side of R17 that is closest to the shielding. Then solder a thin wire between the other sides of the two resistors.
See the attached image.

Pim.

[Pim Borst]

By the way, the reason I used a 68 ohm resistor was because the local component store didn't have a 62 ohm.
I could choose between 56 and 68 ohm. The latter seemed safer.
Later, when I choose not to remove R17 (the led-free solder didn't melt with my low power soldering iron) I realized that 68 ohm is perfect.
A 62K ohm and a 68 ohm resistor in parallel together give (almost exactly) 62 ohm.

[Garluk]

Oh... Yes. We've checked number of units and it appears, that all units manufactured since August 2007 seems to have correct resistor installed. You could check your unit manufacture date by examining first 2 digits in the unit serial number: i.e. 78 stays for August 2007, 79 for September, ... 7c for December.

The easiest way to check if you've right resistor installed is to type

wl noise

in the "hidden" page. This will return measured noise value from radio.

62 Ohm resistor gives -89 dB and above.

If you've something between -99..-92 then pre-amplifier is not working (62 kOhm resistor installed).

Where is the "hidden" page?

how can I give the noise measure?

Thanks in advantage

[Oleg]

http://my.router/Main_AdmStatus_Content.asp

[Garluk]

http://my.router/Main_AdmStatus_Content.asp

I have oleg's firmware.
If I go to the Main_AdmStatus_Content.asp page I get system command form.

Can you help me?

Tanks

[Renegate]

I have oleg's firmware.
If I go to the Main_AdmStatus_Content.asp page I get system command form.

Can you help me?

Tanks

click on this link -> http://my.router/Main_AdmStatus_Content.asp

it will apear a secret page from your router's config webpage called System Command
in this window you will have to type the following command -> wl noise and click Refresh it will give you a negative value
if your result is something between -99 and -92 you have 62 K Ohm resistor installed
if your result is -89 or a higher value (eg -86) then you have the right resistor installed (62Ohm)

[Garluk]

thanks..

I give -90 value.

I think have a right resistor installed but the measured noise value is not good. pre-amplifier not working correctly.

[Renegate]

thanks..

I give -90 value.

I think have a right resistor installed but the measured noise value is not good. pre-amplifier not working correctly.

the value is good but to be shure check and post here the first 2 digits from your WL-500GP serial number (it is located on the sticker underneath the device)

[Sjoerd-WL500gP]

See:

http://wl500g.info/showthread.php?p=88858

[Garluk]

the value is good but to be shure check and post here the first 2 digits from your WL-500GP serial number (it is located on the sticker underneath the device)

The first two digit of my SN are 78

[Renegate]

The first two digit of my SN are 78

Your unit is made in august 2007 (78 stays for August 2007) it has the correct resistor on the minipci card. You do not need the hardware modding

[dflorin69]

Hi all,

I have a WL 500GP with Oleg's firmware and the SN starts with 71 - that means a defective board. The wl noise command says : - 98dB before modding. After applying both condenser and R17 mod, wl noise: -98dB. Then, I have measured voltage at R17: 3.2 V at one end and 2.5 V at the other. Mesuring the R17 value I found a strange value : 3.6 kohm . Please tell me what to do to improve the noise value ?

Thanks for help!

[Renegate]

Hi all,

I have a WL 500GP with Oleg's firmware and the SN starts with 71 - that means a defective board. The wl noise command says : - 98dB before modding. After applying both condenser and R17 mod, wl noise: -98dB. Then, I have measured voltage at R17: 3.2 V at one end and 2.5 V at the other. Mesuring the R17 value I found a strange value : 3.6 kohm . Please tell me what to do to improve the noise value ?

Thanks for help!

Change the original R17 resistor (62K Ohm) from the minipciboard with a 62 Ohm resistor, you can find one at the electronic parts store or on an old computer mainboard
Double check your soldering just to be shure.
Good luck !