Benchoff suspects it may be tied to Google Project Skybender to bring internet by drone, while others suspect Google Project Loon and other experiments in bringing internet access worldwide. The InfoWars crowd will probably suspect mind control, especially with HAARP under utilized now. My guess? Aliens. The nearby spaceport provides a perfect landing spot, and our overlords know New Mexico by well know, having crashed so many flying saucers there.
http://www.popularmechanics.com/technology/infrastructure/a19750/google-is-building-a-big-mysterious-radio-transmitter-in-the-desert/
Aliens Aliens Aliens
Sergey wants to do HAM radio?
Loon or Skybender seems to be the most logical IMO