When I visited there in 1974, they were using transmitters made by Technical Material Corporation....at that time, they were operating on 20 (might have been 30...can't remember) and 60 Khz as well as 2.5, 5, 10, 15, 20 and 25 mhz....did anyone notice the Gates/Harris Criterion 80 cart machines in one of the pictures? Charlie Wooten Clear Channel Radio Panama City, FL