KOHM

89.1 FM in Lubbock, Texas first went on the air as KLSD and was operated by the (K) Lubbock Independent School District.  It was soon decided that having LSD in your school-affiliated station was a bad idea so they switched call letters to KOHM about a year later.  The new calls were a nod to the school's electronics program (an ohm is a unit of electrical resistance).  In the late 1980s, KOHM was purchased by Texas Tech University who boosted their transmitter power and brought the now 70,000-watt station into the National Public Radio fold.  In 2012 they switched call letters to KTTZ while continuing to air Classical music and NPR programming.