801.g varying transmission rate question

Is it normal that when a wireless signals get prettyweak, due to being far from the router, for LAN transmission rate, normally 54, to vary at 36, 24,18 ?

 

Yes, it is normal for the wireless signal to vary in transfer speeds. It happens even when the computer is right next to the router, because wireless signal isn't very stable. Router's transfer capability and the computer's receiving capability are also contributing factors here. For example, my "N" netbook can only receive something like 80, opposed to the 150 which is the cap for 2,4 GHz N.

 

Thanks!
Laptop, far as I know, has Atheros wireless adapter, 54 rate.
So the router is not broken, I guess. It's just I never watched it, especially the rate

What makes a wireless signal "not stable"?

 

Interference can play a part in ur transmission rates i believe. I know i get a bit of interference in mine from time to time. Having a cordless phone, bluetooth connections and wireless game controllers in the house probably causes a lot of interference for me. Not to mention all the neighbours running their own wifi networks.
I guess the best solution would be to switch to a 5ghz network.