Satellite Dish.gdb : POI File showing the Satellite Positions showing the Elevation of the Dish, Direction of the Dish & the LNB Position so that you can obtain Satellite TV.
TV Towers.gdb : POI File showing the TV Towers to give you a indication as to where to point your TV antenna to obtain the best TV Reception.
School Zones.gdb : POI File showing the School Zone areas.
Phone Towers.gdb : POI File showing the Telstra Phone Towers so that you might get a better reception.
Copy the *.gdb to your hard drive under C:\Documents\My Garmin. Make sure that when you open Map Source go to \File\Preferences\File Location\Default File Location\ and make sure that the path is the same as where you have stored this file.
To view the gdb file within Map Source open Map Source then click on \file\open and locate the gdb file that you wish to open as per above.
To view within Base Camp open Base Camp then click on \File\Import and select the gdb file that you wish to open.
To add a shortcut to your Desktop, using Windows Explorer locate the gdb file and right click on the file and click on \Send To\Desktop. This will create a shortcut on your desktop, then all you need to do is click on this shortcut which will then open Map Source and load the gdb files.