Would upgrading to Shaw 150 improve the wifi coverage in my house? My computers, modem, and router (with extended antennae) are in the basement and a TP LINK N300 range extender is on the 2nd floor. In the fall, I had wifi coverage on the 2nd and 3rd floors for about 6 weeks only but now the coverage with not work on the 2nd or 3rd floors. Presently we have the internet 15 while using a D link DIR628 router and a CISCO DPD3825 modem. Suggestions?