On the afternoon of Saturday, January 16, Christopher Walsh, KJ6BBS, of Irvine, California, was listening to radio traffic on 446.760 MHz, a channel used by the Los Angeles area-based Pocket Auto-Patch Association (PAPA) system -- an Amateur Radio network of 22 interlinked analog and digital D-STAR repeaters that provide extensive coverage of the Southern California region and beyond -- when he heard an emergency radio call break from Jose Hernandez, KI6PCK, of Thousand Oaks, California, reporting an injured male who had broken some ribs from an ATV-type accident.
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