The mathematical model used by TV fool is only able to predict based on the information is has access to. It does not have an absolute picture of every tree, building, rock, etc. The terrain data is finite in resolution.
Yes, in some cases, you'll get better reception close to the ground. That's the exception, not the rule, in the real world. Simulation is a valuable aid but the real world is where it happens.
Per TV Fool:
Quote:
About the signal strengths and coverage overlays - They DO take into account the transmitter power, frequency, antenna pattern, and height
- They DO account for propagation losses due to terrain
- They DO account for curvature of the Earth
- They DO NOT take into account your antenna gain, amps, or receiver sensitivity
- They DO NOT account for building obstructions or indoor penetration
- They DO NOT account for multipath
... Please understand that this is a simulation and can only be treated as a rough approximation. Reception at your location is affected by many factors such as multipath, antenna gain, receiver sensitivity, buildings, and trees - which are not taken into account. Your mileage may vary.
|
(Emphasis added)