How can I place my antenna *precisely* instead of visually?
You can type GPS co-ordinates into the location field instead of placing the marker on the map. At the point of calculation the co-ordinates in the location fields take precedence over wherever the marker may be located. You can also hide the marker with the show/hide button.
If my mast is 2 metres tall and its on top of a 10 metre building what should I enter for the transmitter height?
If LIDAR data is present for the city then just 2m as the building will be considered the 'ground'. If LIDAR data is not present and the building is not modelled then you should enter 12m to simulate the building also. You can test if LIDAR is present by clicking on the map and checking the 'Output' menu.
I can't find my antenna in the list
The antenna list is dynamically populated based upon your frequency. If you enter a VHF frequency you will see VHF antennas and so on. Antennas are listed ordered by the manufacturer not the pattern name so if you didn't give it a name it will be OEM.