Long Range Radio Part:

  An integrated Semtech SX1276/SX1278 LoRa™ Transceivers provide ultra-long range spread spectrum communication with 150 dB – 168 dB Link Budget in high interference immunity, all that with a minimal power consumption. Used Modulation Techniques are providing remarkable selectivity, than the conventional ones. 

GPS Part: 

  Built-in GPS Module can calculate and predict orbits automatically. It uses the ephemeris’ data from last up to 3 days, buffered in an internal flash memory. That allows even indoor low-power operation. The Module also has automatic antenna detection and switching function between the internal and external active antenna. 

Raspberry Pi Lora/GPS HAT – Key Features:

• Based on the SX1276/SX1278 transceiver,
• +20 dB Constant RF Output – 100 mW,
• Long range spread spectrum communication,
• High interference immunity, 
• LoRa™ WAN Modem
• Available in three Frequency Bands:
  • 868 MHz,
  • 433 MHz,
  • 915 MHz.
• Compatibility:
  • Raspberry Pi 2 Model B,
  • Raspberry Pi 3,
• Modulation Types:
  • FSK, GFSK, MSK,
  • GMSK, LoRa™, and OOK modulation,
• Configurable Baud-Rates,
• Preamble detecting,
• Automatic RF Sensing,
• Extremely Fast AFC – Automatic Frequency Control, 
• Integrated temperature sensor,
• Low Battery Indicator with a configurable threshold level,
• Support DGPS, SBAS (WAAS, EGNOS, MSAS, GAGAN), AGPS, 
• GPS Module can switch automatically between internal and external active antenna,
• SDK – Software Development KIT,
• Integrated Low Noise Input Amplifier,
• Built-in LNA for better sensitivity, 
• GPS Automatic Antenna Detection,
• EASY™ – AGPS technology, 
• AlwaysLocate™ – Periodic Mode Intelligent Controller,
• GPS FLP mode, using about 50% lower power consumption versus a normal mode,
• Dimensions:
  • 4.7 x 3.1 x 1.2 inches,
• Weight:
  • 3.5 ounces.

PIC. 1  LoRa / GPS HAT for Raspberry Pi 2 & 3

  Let we add few lines related to the technical parameters.

Raspberry Pi LoRa/GPS HAT – Technical Specifications:

LoRa Part Specification: 

• Based on the SX1276/SX1278 transceiver,
• High sensitivity: down to -148 dBm.
• +20 dBm – 100 mW constant RF output, 
• 168 dB max total communication link range.
• 127 dB Dynamic Range RSSI. An Indicator of RF Field Strenght, 
• In-System Programmable bit rate: up to 300 kbps.
• Protected front-end circuit.
• Low Receiver part current consumption: 10.3 mA, only 200 nA current for memorizing the register information.
• Precision Programmable Frequency Synthesizer with 61 Hz-Step.
• Implemented Bit synchronizer for self clock-recovery.
• CRC Packet Controlling engine:
  • Size: Up to 256 bytes,
  • CRC: Yes, 
• Built-in temperature sensor,
• Built-in low-battery indicator.

GPS Part Specification:

• L80 GPS – Based on MediaTek MT3339 GPS Module, 
• GPS Power Consumption:
  • While trying the Acquisition: up to 25mA,
  • When is Tracking: up to 20mA.
• L1 Band Receiving Part works at 1575.42 MHz,  
• Tracking & Acquisition Channels: 22 / 66, 
• Compliant with AGPS, DGPS /RTCM & SBAS,
• UART Serial Interface:
  • Baudrate: 4800 to 115200 bps., 9600 bps – default,
• Global Navigation Satellite System GNSS Low Power Operation,
• Update rate: 1Hz to 10Hz. 
• Protocols: PMTK, NMEA0183,
• Horizontal Positioning Accuracy: <2.5 m, 
• Dynamic Performance Altitude: 18,000 m max.,
• Maximum Acceleration 4G.
• Maximum Velocity Max. 515m/s, 
• Sensitivity:
  • Acquisition -148dBm，
  • Reacquisition -160dBm,
  • Tracking -165dBm,
• Accuracy: 
  • Velocity without aid<0.1m/s,
  • Acceleration without aid 0.1m/s².
• Timings :
• TTFF @-130dBm, Using EASY™:
  • Cold Start<15s.
  • Warm Start <5s.
  • Hot start <1s. 
• Not Using EASY™:  
  • Cold Start<35s.
  • Warm Start <30s.
  • Hot start <1s. 
• Accuracy:
  • 1PPS out 10ns，
• Reacquisition Time:
  • Below 1 second.

See in the Package:

• Lora/GPS HAT – 1 pcs.,
• Antenna – 1 pcs.,
• Screws – 4 pcs.,
• Nuts – 4 pcs.,
• Brass cylinders – 4 pcs.

 LoRa / GPS Hat For Raspberry Pi 2 & 3 By Dragino: