The SmartElex NEO-M9N GPS Breakout is a high quality GPS board with equally impressive configuration options including SMA. The NEO-M9N module is a 92-channel u-blox M9 engine GNSS receiver, meaning it can receive signals from the GPS, GLONASS, Galileo, and BeiDou constellations with ~1.5 meter accuracy. This breakout supports concurrent reception of four GNSS. This maximizes position accuracy in challenging conditions increasing, precision and decreases lock time; and thanks to the onboard rechargeable battery, you’ll have backup power enabling the GPS to get a hot lock within seconds! Additionally, this u-blox receiver supports I2C (u-blox calls this Display Data Channel). We have broken out 0.1″-spaced pins in case you prefer to use a breadboard.

The NEO-M9N module detects jamming and spoofing events and can report them to the host, so that the system can react to such events. A SAW (Surface Acoustic Wave) filter combined with an LNA (Low Noise Amplifier) in the RF path is integrated into the module which allows normal operation even under strong RF interferences.
U-blox based GPS products are configurable using the popular, but dense, windows program called u-center. Plenty of different functions can be configured on the NEO-M9N: baud rates, update rates, geofencing, spoofing detection, external interrupts, SBAS/D-GPS, etc.
This SmartElex GPS Breakout is also equipped with an on-board rechargeable battery that provides power to the RTC. This reduces the time-to-first fix from a cold start (~24s) to a hot start (~2s). The battery will maintain RTC and GNSS orbit data without being connected to power for plenty of time.

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Features: 

1.  92-Channel GNSS Receiver
2.  1.5m Horizontal Accuracy
3.  25Hz Max Update Rate (four concurrent GNSS)
4.  Max Altitude: 80,000m
5.  Max G: ≤4
6.  Max Velocity: 500m/s
7.  Velocity Accuracy: 0.05m/s
8.  Heading Accuracy: 0.3 degrees
9.  Time Pulse Accuracy: 30ns
10.  3.3V VCC and I/O
11.  Current Consumption: ~31mA Tracking GPS+GLONASS
12.  Supports NMEA, UBX, and RTCM protocols over UART or I2C interfaces