Furuno GP-3700F Operator's Manual page 12

FOREWORD
Interference relief measures
When another ship says it is receiving interference from your fish finder, change its working fre-
quency or lower the transmission sound pressure level for the following equipment in the order
shown.
1) Wideband fish finder
2) Fish finder with multiple frequencies
3) Fish finder with single frequency
About future use
Functions labeled as "future use" are currently unavailable.
Program No.
1451468-02.**
** denotes minor modifications.
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