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

LimeSDR Mini (Render)

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 same platform used to launch the…

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OTA: Reverse Engineering, Sky-High LoRaWAN, Budget Radio Astronomy, and More

VK2Seb's Filter Tutorial

If you subscribe to OTA via email you may have missed Karl Woodward’s second entry in the new LimeSDR Made Simple series, published earlier this week, which aims to introduce you to the concepts you’ll need to get the most from SDR in the real world. Following the first entry in the series last month,…

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

GOES-R satellite launch image, courtesy NASA

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 to move it into its permanent…

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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.