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For a predictive model to be valuable, attenuation values for objects in the environment such as walls must be obtained. The tools needed are a signal generator, a signal receiver, a battery pack, a floor plan of the area being evaluated and a clipboard and pencil. Signal generator To generate a wireless signal I am using a TP-Link AC750 Wireless Portable Nano Travel Router (TL-WR902AC). The settings on the travel router don’t matter as long as they stay consistent throughout the process of measuring attenuation. Battery pack Next you will need a battery pack to power the AP. The smaller the better as long as the pack has enough power to last you the time it will take you to measure. I li