CR8894SXF+

Anti-Jam Four Element Controlled Reception Pattern Antenna (CRPA)

More details

  • Critical Timing
  • Navigation in contested environs
  • Critical Infrastructure GNSS (airports, etc.)
  • Law enforcement and public safety
  • Dual band GNSS signal support
  • Supports eXtended Filtering+ (XF+) providing sharp out-of-band signal rejection
  • Up to 20-40 dB null depth
  • Serial interface provides state information and estimated jammer direction
  • IP69K water proof housing
  • Compatible with standard GNSS receivers
  • Very low power consumption (140 mA)
  • Small, lightweight, and low-profile form factor makes it ideal for many uses
  • Supports situational awareness, indicates CRPA state: jamming observed/mitigated, frequency, and direction

CR8894SXF+ Dual-Band GNSS CRPA Antenna

Advanced Interference Mitigation for Reliable GNSS Performance

Calian’s CR8894SXF+ is a high-performance, 4-element Controlled Reception Pattern Antenna (CRPA) designed for dual-band GNSS signal reception. Engineered for resilience in challenging RF environments, it provides two independent nulls—one in each GNSS band:

  • Lower Band: 1189 – 1254 MHz
  • Upper Band: 1559 – 1591 MHz

Multi-Constellation Support

The CR8894SXF+ supports a wide range of GNSS signals, including:

  • GPS: L1, L2, M-Code
  • Galileo: E1, E5b
  • GLONASS: G2, G3
  • BeiDou: B1, B2b

Dual-Layer Interference Protection

Standard GNSS antennas are vulnerable to jamming, which can saturate the Low Noise Amplifier (LNA). The CR8894SXF+ counters this with two powerful technologies:

  • eXtended Filtering+ (XF+):

    • Over 80 dB out-of-band rejection (400 MHz – 3000 MHz)
    • Independent upper and lower LNA channels—if one is jammed, the other remains operational

  • CRPA Nulling Technology:

    • Dynamically forms radiation pattern nulls in the direction of interference
    • Prevents LNA saturation and preserves GNSS signal integrity

The result: a clean, interference-free RF signal compatible with all Commercial Off-The-Shelf (COTS) GNSS receivers.

Integrated, Intelligent Design

Built with Tallysman Accutenna® technology, the CR8894SXF+ features:

  • Low-power analog interference detection and mitigation
  • Compact, rugged IP69K-rated enclosure for harsh environments
  • Surface-mount installation with four screws
  • Centralized, sealed connectors (SMA or TNC RF + RS232/RS422 serial interfaces)

Enhanced Situational Awareness

Two serial interfaces provide real-time NMEA messages with:

  • Jamming detection and mitigation status
  • Jammer frequency band
  • Direction of interference relative to the antenna

Future-Ready

A future version of the CR8894SXF+ will support three nulls per band, further enhancing its anti-jamming capabilities.

Antenna FrequencyAnti Jamming CRPA
MountThrough-Hole

ANT_CR8894SXF+_DS

Datasheet for the Calian CR7712SXF+ Anti Jamming CRPA

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DescriptionPart-Number
CR8894SXF+33-CR8894SXF+-XX-YY-W-1