A4A & A4AS Series
High-performance 4-Element CRPA Anti-Jamming GNSS Receivers for BeiDou B1 and GPS L1 frequencies.
Standard
A4A GNSS
| Dimensions | 65×65×18mm |
| Weight | 152g |
| Performance | Basic Anti-spoofing |
| Voltage | 5V |
Professional
A4AS GNSS
| Dimensions | 65×65×28mm |
| Weight | 203g |
| Performance | Exceptional Anti-spoofing |
| Voltage | 5V |
Structure and Wiring Instructions
Usage Requirements
- 1. Connect TX, RX, and GND to the flight controller, and provide a separate 5V power supply to the module.
- 2. Open-source flight controller parameter settings: GPS_TYPE: 1
- 3. The module only has positioning function and needs to be used with a magnetic compass.
- 4. The white side needs to face up, without obstruction, and there is no installation direction requirement.
Note: A4A and A4AS share the same wiring logic despite physical height differences.
Technical Specifications
| Feature | A4A Specification | A4AS Specification |
|---|---|---|
| Software Protocol | NMEA0183 | NMEA0183 |
| Hardware Interfaces | Serial port | Serial port |
| Suppressed Patterns | ≤3 Patterns | ≤3 Patterns |
| Operating Frequency | 1568MHz±10MHz | 1568MHz±10MHz |
| SIR (Single Direction) | ≥ 90dB | ≥ 90dB |
| SIR (Three Directions) | ≥ 80dB | ≥ 80dB |
| Power Consumption (Jam) | ≤5V@700mA | ≤5V@700mA |
| Operating Temp | -40℃～+70℃ | -40℃～+70℃ |
Maintenance and Care
1. Inspect components for transit damage before installation.
2. Do not disassemble the product housing under any circumstances.
3. Protect all cables; avoid forceful bending or dragging.
4. Disconnect power when not in use.
5. Avoid heavy pressure or impact; keep the unit dry.
6. Ensure static dissipation measures at storage locations.
