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CR8894SXF+ 
Anti-Jam Four Element Controlled Reception Pattern Antenna (CRPA)
- 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 Frequency | Anti Jamming CRPA |
| Mount | Through-Hole |
| Description | Part-Number |
|---|---|
| CR8894SXF+ | 33-CR8894SXF+-XX-YY-W-1 |