The following manuals are available for the 2H and 19F Lockswitch:
AVANCE - 2H Lockswitch 200-400 MHz (TM)
AVANCE - 2H Lockswitch 500 MHz (TM)
AVANCE - 2H Lockswitch 600-700 MHz (TM)
AVANCE - 2H Lockswitch 750-900 MHz (TM)
AVANCE - 19F Lockswitch 200-600 MHz (OSM)