i have a macbook air running el capitan.  i am on the latest version but the macbook still drops off from my wifi connection.  i can get reconnected by turning it off an then on again but it  happens at least every 15 minutes.  I am on a shaw modem.

i have a macbook air purchased this year and running the latest version of el capitan. the macbook constantly is dropping my wifi connection.  i am on a shaw cable modem.  Any suggestions?