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Subphone
Subphone 580
6-10 km
Rack mount, 2 frequencies
27kHz or 10kHz standard, other frequency options are available.
Subphone 580TX
3-5 km
Rack mount, 2 frequencies
27kHz or 10kHz standard, other frequency options are available.
Other
Subsea Model 1020
3-5 km
Circuit board set, customizable, 1 frequency
27kHz or 30kKz standard, other frequency options are available.