Trilogy Networks UHF Digital Coverage for Christchurch Area
Approximate coverage indicator, Green is good signal level. Where there is no coloured overlay it suggests possible area with low or no signal.
Go to “map” in the top left corner of the map, hover over the word “map” with your mouse then tick the box next to “Terrain” to help see the hills etc better.
You can type street addresses in to see coverage around you.