I've rigged up a good-enough blend of hardware and software to measure antenna radiation patterns. As a test run of the setup I've measured the azimuth response of the 2 sectors antennas I have in stock here. Results published on their individual antenna pages: https://www.hamwan.org/t/tiki-index.php?page=ARC+ARC-VS5818SD1&structure=Ham... https://www.hamwan.org/t/tiki-index.php?page=Laird+SAH58-120-16-WB&structure... Please heed the published warnings+instructions there. The environment is full of reflections and the measurements are wildly inaccurate because of this, especially at 0 degrees (back turned towards RF source). Signals are bouncing off the metal in my patio door. But despite all the shortcomings of this new system, it does reveal some interesting things. For example, I'm willing to bet $100 that the ARC Wireless antenna will NEVER read as a 120deg sector, even when measured in proper conditions. The front lobe is just too damn narrow. Hell, it'll have a hard time pretending to be even a 90deg sector! Manufacturer nonsense like this is why it's so important to measure your gear before deploying into the real world. This measurement system can also be used to measure elevation radiation patterns, and cross polarization. Hurray for progress! :) --Bart