The rollout of LTE next to the traditional 868MHz frequency band commonly used in Europe creates increased interference for wireless security systems, smoke detectors, lighting control, home automation, and smart meter applications.
In close cooperation with Semtech Corporation IMST developed the ultra long range radio module iM880A/B based on Semtech’s patented LoRa™ technology. With strong robustness against interferers and the minimized power consumption the module is the best solution for applications require long range and secure radio link within the 868 MHz frequency band.
Using Semtech’s patented LoRa™ modulation technique iM880A/B can achieve a sensitivity of more than -137 dBm using a low cost bill of materials. The high sensitivity combined with the integrated +20 dBm power amplifier yields industry leading link budget making it optimal for any application requiring range or robustness. LoRa™ also provides significant advantages in both blocking and selectivity over conventional modulation techniques, solving the traditional design compromise between range, interference immunity and energy consumption.

Productname   Specification Description

iM880B-L  

Frequency: 868 MHz
Range (LoS): up to 15000 m
RF power: up to +19 dBm
Sensitivity: up to -137 dBm


The LoRa™ technology of Semtech Corporation provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption. The module provides the configuration of six orthogonal spreading sequences, three different signal bandwidth options and four error correction schemes and therefore enables the user to choose the perfect balance between range, interference robustness and data rate for multiple wireless applications.


iM880A-L Frequency: 868 MHz
Range (LoS): up to 15000 m
RF power: up to +19 dBm
Sensitivity: up to -137 dBm

Product Change Notification: iM880A had been upgraded to more functionality in terms of memory and operating temperature, please refer to iM880B.


SK-iM880B  

Frequency: 868 MHz
Range (LoS): up to 15000 m
RF power: up to +19 dBm
Sensitivity: up to -137 dBm

The Starter Kit serves as a development, test and demonstration platform for the iM880B and for evaluation of the Long Range Radio module and its possible applications.

SK-iM880A Frequency: 868 MHz
Range (LoS): up to 15000 m
RF power: up to +19 dBm
Sensitivity: up to -137 dBm
Product Change Notification: SK-iM880A had been upgraded to more functionality in terms of memory and operating temperature, please refer to SK-iM880B.

LoRaMote Frequency: 868 MHz
RF power: up to +19 dBm
Sensitivity: up to -137 dBm
The LoRaMote is not available any more and will be replaced by LoRaMote_II soon.

iU880A Operating Temperature: -40°C to +85°C
Dimensions (LxWxH): 64 x 25.5 x 13 mm³
RF Output Power: +18 dBm (EIRP)
The iU880A is a compact and cost–effective USB stick based on the Long Range Radio Module iM880A-L.  
The iU880A is qualified according to the R&TTE 1999/5/EC. With an adjustable output power of up to +18 dBm (EIRP) combined with the outstanding sensitivity of the USB-Stick high ranges can be achieved.

iC880A Frequency band 868MHz
Orthogonal spreading factors
Sensitivity -138 dBm
Interfaces USB or SPI
SX1301 base band processor
Emulates 49 x LoRa demodulators
10 parallel demodulation paths
The iC880A is the RF front end of a LoRa™ gateway. It is able to receive on different frequency channels at the same time and is able to demodulate the LoRa™ signal without knowledge of the used spreading factor of the sending node.

IBM LMiC Software The IBM LoRa™ MAC in (LMiC) C-library is a portable implementation of the LoRa™ MAC specification for the C programming language for iM880A. It supports both the EU-868 and the US-915 variants of the specification and it can handle class A and class B devices. It is provided as open source under the Eclipse Public License (EPL).
For further information please refer to: IBM LMiC

IBM Mote Runner Software

Mote Runner is IBM’s infrastructure platform for wireless sensor networks (WSN). Firmware contains built-in LoRa™ MAC library (lrsc-mac). iM880A and SK-iM880A are supported devices.
For further information please refer to: IBM Mote Runner


LoRa Alliance General Information LoRa™ Alliance is an open, non-profit association of members that believe the internet of things era is now. Our mission to standardize Low Power Wide Area Networks (LPWAN) being deployed around the world to enable Internet of Things (IoT), machine-to-machine (M2M), and smart city, and industrial applications. The Alliance members will collaborate to drive the global success of the LoRa™ protocol (LoRaWAN™), by sharing knowledge and experience to guarantee interoperability between operators in one open global standard.