Embit EMB-LR1280-mPCIe-4x is a 2.4GHz LoRa mPCIe module based on Semtech SX1280 chipset

Embit EMB-LR1280-mPCIe-4x is an mPCIe (mini PCIe) module based on four Semtech SX1280 2.4 GHz LoRa transceivers and designed for OEM gateways that can work worldwide thanks to the use of the 2.4GHz ISM band and supports ranging.

We first covered 2.4GHz LoRa and the SX1280 transceiver two years ago as a solution to design region-independent products specially suited to maritime and intercontinental logistics applications. We haven’t seen it used that much although we covered an ESP32 board with SX1280 last year, and it turns out that Italian company Embit has also made a mPCIe module based on the SX1280 chipset.

SX1280 mPCIe module

Embit EMB-LR1280-mPCIe-4x specifications:

  • LoRa connectivity
    • Chipsets – 4x Semtech SX1280 transceiver with 3x LoRa Rx Channels + 1x LoRa Tx
    • Modulation – LoRa Spread Spectrum
    • Frequency – 2.4 GHz ISM band
    • Frequency Range – 2400 to 2500 MHz
    • RF Output power – Up to +12 dBm
    • Sensitivity -129 dBm @ SF12 BW 812.5kHz
    • External Antenna – U.FL connector
  • Host interface – Standard mPCIe connector
  • Supply Voltage – +3.3V
  • Current consumption – Tx: Max. 84mA @ +12dBm; Rx: 30mA
  • Temperature Range – -40°C to +85°C
  • Dimension – 50.95 x 30 mm

EMB-LR1280-mPCIe-4x acts as a gateway in a star topology network and can be used for logistics and supply chain, industrial monitoring and control, factory automation, home & building automation, wireless alarm & security systems, etc…

The product page does not include any information about software support, but I found out that the TinyGS 2.4 GHz LoRa ground station repository on GitHub lists the EMB-LR1280-mPCIe-4x based Emlit EMB-Fem2GW-O-2G4 gateway as one of the off-the-shelf gateways for LoRa 2.4 GHz.

2.4GHz LoRa gateway with SX1280 mPCIe module
EMB-Fem2GW-O-2G4 gateway based on the EMB-LR1280-mPCIe-4x SX1280 module

That project uses an ESP32-based ground station board that will receive messages from satellites on the 2.4GHz band. The Embit gateway specifications list a Broadcom BCM2837B0 quad-core  Cortex-A53 processor, 1GB LPDDR2, and 8GB eMMC flash, so it looks like it’s based on a Raspberry Pi CM3 module or a custom Raspberry Pi 3 board.

I could not find any pricing information for the EMB-LR1280-mPCIe-4x mPCIe module and the 2.4 GHz LoRa gateway. They may have been available for while, as I’ve just come across the products this morning while searching for an SX1280 mPCIe card.

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