This is from the Ohio/Penn DX Bulletin: OPDX Bulletin 1161 May 5, 2014

XE, MEXICO (Special Event) Members of Radioclub Cancun will be active between May 7-12th during the car race "Rally Maya Mexico" with the special callsign XE3RALLY. Activity will be on 40-10 meters. They will also activate some rare grids on 6 meters and the satellite from the Yucatan Peninsula.

Look for them on the satellite FO-29 and from Grids EL61, EL60, EL50, EK59, EK49, and EL40. QSL via XE3RCC and LoTW. Their website is: http://www.xe3rally.info

73 Rolf NR0T Amsat #38889 Grid EN34it