How to install RTL8187 driver to Ubuntu 13.04?

**tom14** · August 25th, 2013

Originally Posted by chili555

It is actually:

Code:

sudo iwconfig wlan1 txpower 25

Please try again.

Code:

tom@tom-HP-Compaq-nc8000-DU449EA-ABD:~$ iwconfig
wlan0     IEEE 802.11bg  ESSID:off/any  
          Mode:Managed  Access Point: Not-Associated   Tx-Power=20 dBm   
          Retry  long limit:7   RTS thr:off   Fragment thr:off
          Power Management:off
          
irda0     no wireless extensions.

lo        no wireless extensions.

eth0      no wireless extensions.

wlan1     IEEE 802.11bg  ESSID:"ThomsonD5E443"  
          Mode:Managed  Frequency:2.437 GHz  Access Point: 00:24:17:D7:68:A7   
          Bit Rate=54 Mb/s   Tx-Power=20 dBm   
          Retry  long limit:7   RTS thr:off   Fragment thr:off
          Power Management:off
          Link Quality=46/70  Signal level=-64 dBm  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:25   Missed beacon:0

tom@tom-HP-Compaq-nc8000-DU449EA-ABD:~$

I did change Tx power to 25 value,but never see any change on the terminal,it's always 20.With this signal level (-64 dBm) I had three lines in my signal bar,but couldn't do anything on internet.I was surprised yesterday,I had only internal adapter working,RTL was unplugged,no lines in the signal bar,and internet was working with the "speed of light",even some streaming music for a while.Is my link quality too low maybe?If I could only increase the transmitting power.Two years ago when I bought RTL adapter,I've noticed that chip was getting pretty hot,so I mounted heat sink on it,and now it's cool all the time,and I won't end up with toasted chip,even with tx power increased

**chili555** · August 25th, 2013

I did change Tx power to 25 value,but never see any change on the terminal,it's always 20.

Then we assume it's already at the maximum and can't be increased.

Is my link quality too low maybe?

Well, yes! Can you please move 175 yards closer to the router?

I am not sure there is much else we can do. Decide which of the two devices works better and live with it is about all I know to suggest.

**tom14** · August 25th, 2013

Originally Posted by chili555

Then we assume it's already at the maximum and can't be increased.Well, yes! Can you please move 175 yards closer to the router?

I am not sure there is much else we can do. Decide which of the two devices works better and live with it is about all I know to suggest.

Soon I'll make one directional wifi antenna and see whats gonna be.I'll let you know about it if you don't mind?Thanks a lot Chili....

**tom14** · August 25th, 2013

Originally Posted by kurt18947

Not being an RF expert, 200 yards seems like quite a way for a nondirectional antenna to work. Particularly if there is other 2.4 ghz. 'noise' around like cordless phones, microwave ovens and the like. Does your adapter have a removeable antenna? If so, I wonder if you'll end up with something like this:

http://sewelldirect.com/High-Gain-Pa...FZKk4AodLxQAXA

or if you're a tinkerer, a cantenna.

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

You are right Kurt,bad link quality was my problem,not signal.One of these days I'll make wifi directional antenna,or buy one over e-bay.Thank you for your help...