CHIRP is a sweep frequency centered around the standard fixed frequencies normally used in non-CHIRP transmit of each Sonar technology (2d, DI or SI) ...
2d fixed frequency of 83kHz will display 75-95kHz frequency sweep in CHIRP ...
2d fixed frequency of 200kHz will display 175-225kHz frequency sweep in CHIRP ...
DI or SI fixed frequency of 455kHz will display 420-520kHz frequency sweep in CHIRP ...
Di or SI fixed frequency of 800kHz will display 790-850kHz frequency sweep in CHIRP ...
DI or SI MEGA fixed frequency of 1200kHz will display 1150-1275kHz frequency sweep in CHIRP ...
Rickie


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