Geobase
From PathlossWiki
GEOBASE - Canadian terrain data
Geobase has elevation data (CDED), Vector data for roads etc. and satellite imagery for all of Canada
The CDED (Canadian Digital Elevation Data) 1:50,000 and 1:250,000 files.
http://www.geobase.ca/geobase/en/data/cded/index.html
These must be converted in the Pathloss program before they can be used. For more information see the manual under CDED-DTED indexed files. You must download the latest Pathloss update in order to use these.
Using CDED files with Pathloss 4.0
Download and unzip the CDED files to your hard drive. In the Pathloss program select Configure-Terain Database Select DTED-CDED indexed files from the Primary list Click Setup Primary Click Set directory