I ran communications for BurningMan for 17 years until I retired. There is a dispatch center at BM. It is a combined dispatch center staffed 24x7 by BM and Federal employees. There are telephones, a private cellular system, satcom, airport radios, EMS, FIRE, Air Evac, and LE all in one building. All BM comms are deployed by a rental contractor to provide BM event comms, fire dispatch, EMS, and Air Evac responsibilities. LE comms are provided by BLM at the same dispatch center. All emergency and LE comms are encrypted. MURS IS MONITORED in dispatch during the event. This is a ORG commitment to the community and is outlined on the BM website.
Anyone wanting to communicate at BM is warned. ANY commercial frequency radios need to be coordinated through the Comm Leader, whom this year is Bryan. Sierra Electronics is Sparks usually supplies several camps with radios (The Yurt people come to mind) and they can have them ready for you to pickup as you go through town.
You should make your arrangements SOON, and there is usual nothing left in town for any services once the early arrivals hit the local area. Food, Water, supplies and radios go fast.
On Playa, there is literally nothing. There is no telephones. There is no cellular coverage once the events starts as the (sparse) coverage in the area is completely overwhelmed. The local cell company does not have LTE, is only 3G and has - count them - 6 channels available for voice. Most of the year the area around the event has a higher population of wild horses than it does people.
Hopefully everyone got a ticket who wanted one, and everyone have a safe and wonderful event in 2018.