Over the past several months I have not heard any activity on the Palm Beach County School District LTR system. I have even tried to monitor the freqs in conventional mode to see if there was any activity thinking that perhaps the LTR mapping may have changed. But nothing heard. The LTR system seems to be in place with an occasional cwid station identifier. The system used to be quite busy, now crickets. I realize that the LTR systems are old and being phased out. But where did they go??