Oceaneering C-Nav977XF+ Anti-Jamming GNSS Antenna (LEANA)
The Oceaneering C-Nav977XF+ Low Elevation Angle Nulling Antenna (LEANA) is a quad-band GNSS antenna designed to mitigate ground-based interference and jamming signals for reliable positioning, navigation and timing in demanding marine and offshore environments.
• GNSS interference mitigation with typical 20 dB wideband suppression of low-elevation signals between -5° and approximately 15°.
• Multi-constellation support for GPS, GLONASS, Galileo, BeiDou and other supported GNSS signals.
• Easy system integration with a standard TNC connector, existing RF cabling and a compact, IP67-rated enclosure.
Speak with our survey specialists to discuss your project requirements.
The Oceaneering C-Nav977XF+ Low Elevation Angle Nulling Antenna (LEANA) is a quad-band GNSS antenna designed to mitigate ground-based interference and jamming signals for reliable positioning, navigation and timing in demanding marine and offshore environments.
• GNSS interference mitigation with typical 20 dB wideband suppression of low-elevation signals between -5° and approximately 15°.
• Multi-constellation support for GPS, GLONASS, Galileo, BeiDou and other supported GNSS signals.
• Easy system integration with a standard TNC connector, existing RF cabling and a compact, IP67-rated enclosure.
Speak with our survey specialists to discuss your project requirements.
Features
Low Elevation Angle Nulling Antenna (LEANA) for GNSS interference mitigation
Typical 20 dB suppression of low-elevation GNSS-band signals
Multi-constellation, quad-band GNSS antenna design
Enhanced filtering to mitigate out-of-band RF interference
Compatible with existing TNC RF cables
Rugged IP67-rated enclosure for marine and offshore environments
Supplied with mounting bracket
Not export controlled, as stated by the manufacturer
Specifications
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Model: C-Nav977XF+ LEANA
Antenna Type: Quad-band GNSS Low Elevation Angle Nulling Antenna
GNSS Support: GPS, GLONASS, Galileo, BeiDou, QZSS, NavIC and SBAS (supported signals)
Low-Elevation Suppression: 20 dB typical (-5° to approximately 15°)
Connector: TNC
Mounting: Through-hole
Ingress Protection: IP67
Operating Temperature: -40°C to +85°C
Dimensions (Diameter × Height): 90 × 180 mm
Weight: 245 g
Compliance: FCC, RED/CE, RoHS and REACH
Refer to datasheet for detailed technical specifications.
Applications
Offshore GNSS positioning and navigation
Hydrographic and marine survey operations
Offshore construction and installation projects
Marine positioning in environments affected by ground-based GNSS interference
Critical positioning, navigation and timing applications
GNSS receiver installations requiring enhanced interference mitigation
Available Configurations / Compatibility
The C-Nav977XF+ LEANA supports several GNSS constellations and is particularly suited for integration with C-Nav receivers using Iridium-delivered correction services.
Compatible Receiver Recommendation:
- C-NavX1 GNSS Receiver
- C-NavX3 GNSS Receiver
The manufacturer recommends these receivers because the antenna’s L-band service support is geographically limited.
