My ADSL connection is always disconnect due to low SNR value. Could anybody please send me a circuit to improve the SNR of my adsl connection ?( repeater or a booster)

 

The company that provides you telephone service should be the party to improve your line (and thus signal-to-noise). If the noise is in the range of frequencies used by the ADSL modem, filtering will just make the problem worse.

 

Check the phone line connection box, and look for discolored(brown/green) places on the terminals. If found use sandpaper/emery cloth to clean the terminals and the copper wire too.

I had this problem last year due to excessive moisture in the connection box.

(the box will be located on the outside of your house-most likely. It is where the phone company lines end and the signal is broken out to go to the phone jacks in your house)