Here in South Texas, 590 KLBJ and XEFD in the Matamoras area duke it out through many miles of South Texas. This morning XEFD is off the air and KLBJ is putting a decent signal into the McAllen area here in Deep South Texas; road miles that is well over 300 miles (more like 350). Not sure if XEFD is off the air temporarily or if it has migrated to FM.