KKZR

KKZR was a Hard Rock/Heavy Metal station in Houston, Texas.  They were an affiliate of the satellite-fed Z-Rock format based in Dallas, TX.  1070 AM began broadcasting as KKZR around 1988 while 106.9 FM, licensed to Conroe, TX, became KKZR in 1992.
Other Z-Rock stickers can be seen here and here.  Two more KKZR stickers here.