The L12L uses the 9–16 kHz band. Subnero specifies communication beyond 10 km in littoral waters and up to 8 kbps at shorter ranges, conditional on channel and reliability requirements. These are separate operating points. Standalone and open integration configurations are offered; catalogue values require a site-specific link budget.
Technical detail
Core features
Vendor-specified 9–16 kHz band with 7 kHz bandwidth.
PSK-OFDM and FH-BFSK software-defined modulation, with JANUS support.
Ethernet 10/100 Mbps and RS232 external interfaces; acoustic ranging and user-defined protocols.
Table lists 18–30 VDC supply, <4 W nominal receive, <45 W average transmit, <200 mW sleep and <5 mW deep sleep.
Acoustic modem
LF band
UnetStack
Use & integration
Recorded applications
Long-range subsea sensor telemetry
Marine-robot communication and acoustic ranging
These describe the reviewed application scope, not confirmed deployments, released requirements or procurement eligibility.
Evidence of maturity
Current quoted product; claimed specifications are not an independently measured site acceptance result.
Commercial availability
Standalone and open configurations marketed by quotation; source has inconsistent deep-sleep wording.
Integration and verification
Readiness
A technology readiness level is not established by the reviewed public sources.
Reviewed connections
No reviewed Mission area or released Defence need connection is currently published.
Original sources 1 linked record
These records support this capability and its published Mission area and Defence need connections. A source count is not a count of independent confirmations.
Current quoted product; claimed specifications are not an independently measured site acceptance result.
Supports: Capability · core features
Ethernet 10/100 Mbps and RS232 external interfaces; acoustic ranging and user-defined protocols.
Supports: Capability · core features
PSK-OFDM and FH-BFSK software-defined modulation, with JANUS support.
Supports: Capability · core features
Vendor-specified 9–16 kHz band with 7 kHz bandwidth.
Supports: Capability · defence applications
Marine-robot communication and acoustic ranging
Supports: Capability · commercial availability
Standalone and open configurations marketed by quotation; source has inconsistent deep-sleep wording.
Supports: Capability · technical tags
L12L Silver long-range acoustic modem supports the documented acoustic modem function or classification.
Supports: Capability · name
L12L Silver long-range acoustic modem
Supports: Capability · technical tags
L12L Silver long-range acoustic modem supports the documented LF band function or classification.
Supports: Capability · technicaldomainslugs
L12L Silver long-range acoustic modem supports the documented communications-and-cyber function or classification.
Supports: Capability · technical tags
L12L Silver long-range acoustic modem supports the documented UnetStack function or classification.
Supports: Capability · defence applications
Long-range subsea sensor telemetry
Supports: Capability · technicaldomainslugs
L12L Silver long-range acoustic modem supports the documented sensing-and-isr function or classification.
Supports: Capability · summary
The L12L uses the9–16kHz band. Subnero specifies communication beyond10km in littoral waters and up to8kbps at shorter ranges, conditional on channel and reliability requirements. These are separate operating points. Standalone and open integration configurations are offered; no universal range/throughput guarantee follows from the catalogue.
Supports: Capability · core features
Table lists 18–30 VDC supply, <4 W nominal receive, <45 W average transmit, <200 mW sleep and <5 mW deep sleep.
Public sources cited · Facts and assessments kept separate · Human review
