Splat! is a program which utilizes terrain data from Space Shuttle missions to create plots for visualising RF ground propagation and analysing RF paths. Bill, W5GFE provides a publicly accessible server for performing Splat! plots here. As you can see from his map, Tasmania has a lot of red dots. :-)
Splat! produces a graphic representation of signal strength according to the terrain.
These plots of VK7RAA Mt Arthur on three different bands show the striking decrease in signal strength as the frequency rises.
Click a plot below to open a larger version.
For the ultimate experience download the zipped files below and open the .kml files in Google Earth.
With a plot in Google Earth zoom in and you can see where your house is under the overlay, especially if you make it more transparent.
The colour key (below-left) shows the received signal strength in dBm. Convert dBm to µV here: dBm 0.22 µV
Here is a detail of VK7RAA's 2m coverage in Launceston taken from Google Earth.
To see the true detail in Google Earth download the zips. Unstuff a zip and you will find each plot uses two files, double-click the .kml file and Google Earth will automatically open the accompanying .ppm overlay. The overlay is quite large and can take a short while to open.
VK7RTC offers superb 70cm coverage from the Mt Wellington site (nominal elevation 1,271m).
The VK7RTC zip above is worth downloading to see detailed coverage of your QTH, and everywhere in the whole region.