OTA: LoRa Testing, Homebrew Antennas, Reactor Monitoring, and More

Engineer Mark Zachmann has posted of his work using the LimeSDR Mini to test low-power long-range LoRa radios, as part of an Internet of Things (IoT) project. “I’m working on a LoRa system at 915MHz. LoRa is a frequency modulation method used on low power IOT devices. Being able to…
Acoustic Communications at Argonne National Laboratory

OTA: LimeSDR Mini, GNU Octave, SDR on a Watch and More

Lime Microsystems has officially opened a crowdfunding campaign for the LimeSDR Mini, a reduced-size and reduced-cost version of the LimeSDR which offers one TX and one RX channel for just $99 for Early Bird backers and $139 thereafter. Taking place on Crowd Supply over the next month – the…
LimeSDR Mini (Render)

Over The Air: GOES-R, LuaRadio, Spectrum Capture, and LoRa

Over The Air is our newly-launched fortnightly round-up, bringing you the latest on topics of interest to the software defined radio community as curated by technology journalist Gareth Halfacree. The US National Oceanic and Atmospheric Administration (NOAA) has successfully launched GOES-R, its most advanced weather monitoring satellite, and is proceeding…
GOES-R satellite launch image, courtesy NASA

LoRa modem with LimeSDR

LoRa is a chirp-based modulation format that can operate beneath the noise floor. Its robust, low power, and low rate -- and a candidate technology for connecting the internet of things. In this blog I will cover the basics of LoRa modulation, show off the LoRa PHY blocks for Pothos, and demonstrate simple relay and client applications using a pair of LimeSDRs.