/ ECHO CONTROL FILE CUR=10 TASK=ECHO1 ECHOLOC=200 CHANNL=4 STEP=107 PRIME=7655 / ECHO CONTROL FILE CUR=10 TASK=ECHO2 ECHOLOC=1400 CHANNL=6 STEP=37 PRIME=7773 / ECHO CONTROL FILE CUR=50 TASK=ECHO3 ECHOLOC=3200 CHANNL=10 STEP=45 PRIME=7757 / ECHO CONTROL FILE CUR=50 TASK=ECHO4 ECHOLOC=4400 CHANNL=12 STEP=51 PRIME=7751