1660 kHz is usually occupied by either WCNZ in Florida or WWRU in New Jersey. On the January 2011 DX-pedition to Lista, however, 2 new stations were heard: WQLR in Michigan and KRZI in Texas. The latter was heard one morning with good signals with ESPN programming. Thankfully, ESPN has pretty frequent local breaks too and several local promotions were heard.
KRZI, located in Waco in Central Texas, broadcasts with a night power of 1 kilowatt. The programmes are also simulcast on 1330 kHz and on 100.9 on FM. Gary L. Moss, President, confirmed my reception of KRZI with an e-mail.