On radio, relaying programming across the border is even more common, with stations like XHITZ-FM 90.3 and XHMORE-FM 98.9 being programmed by U.S. broadcast groups, while being owned by Mexican companies (as required under Mexican law) and operating under Mexican broadcast law. Other American stations relayed via Mexico through local marketing agreements (LMAs) are XEPE AM 1700, XEPRS AM 1090 and simulcast XHPRS-FM 105.7, XESPN AM 800, XESURF AM 540, XETRA FM 91.1, XHRM FM 92.5, XEWW-AM 690, XHA-FM 94.5, XHFG-FM 107.3, XHGLX-FM 91.7, XHLNC-FM 104.9, and XHTY-FM 99.7. All of these stations are authorized to simulcast digitally in HD Radio, as are other stations within of the U.S. border.