150 Charlton is the second tallest building in Hamilton
This might be a little confusing to somebody not familiar with Hamilton and would expect the signal to travel a far distance since it's on the second tallest building in Hamilton.
The Charlton site was chosen as it provides good coverage in the areas below the escarpment including Stoney Creek and Dundas.
However, areas to the west tend to utilize the Brantford tower since the Charlton site actually sits below the top of the escarpment.
So, if you are west of Hamilton, you'll have a tough time hearing the Charlton site even though it's on the 2nd tallest building in Hamilton because of the escarpment.
If you are east of Hamilton (anywhere along the lake), then you should be able to hear the Charlton site.