Community

We never cease to be amazed by the incredible things that people from wireless enthusiasts, through to senior engineers at global wireless operators, create with our technology. Here we provide details of just a few of the projects, demos and initiatives that we’ve come across.

Image: LimeSDR Workshop at The Things Network Conference 2018

QO-100 Communications with the LimeSDR Family

Launched in November 2018, Es'hail-2 - QO-100 - is the world's first geostationary satellite for amateur use, and the LimeSDR community has been making full use of it for everything from stabilisation experiments to live TV broadcasting since it entered into active use.

Digital Audio Broadcasting (DAB) with the LimeSDR and ODR-mmbTools

"Using ODR-mmbTools in combination with a low-cost SDR radio like LimeSDR or its smaller counterpart LimeSDR Mini and a small computer such as the Raspberry Pi," engineer Godfrey Laswai explains, "a DAB+ radio station can reach even the most remote areas."

Weak Signal Propagation Reporting (WSPR) with the LimeSDR Mini

"I attached a cheap 1W high-frequency (HF) amplifier to the LimeSDR Mini," explains system administrator and amateur radio enthusiast Kiril Miloshev, "and with its help I was able to reach Japan, the US, Iceland, the Canary Islands and lots of Europe countries from my home in eastern Europe."

AMSAT-F Rencontre Spatiale Transmission and Reception via QO-100

"I would encourage anyone to give this a try," says Daniel Estévez. "If you already have a LimeSDR or a similar SDR supporting large bandwidths, you already have the most expensive piece of equipment. The rest is standard equipment for satellite TV and it is really inexpensive."

LimeSDR Mini limeSNA Browser-Based Scalar Network Analyser (SNA)

"The open software/hardware helps me to understand and utilise all the features that [the LimeSDR Mini] has," explains Kis. "The development time for the limeSNA was about 8-16 hours thanks to the examples and the open source libraries."

The British Amateur Television Club’s Portsdown ATV Transmitter Project

"The most important aspect for amateur use of SDRs is that the driver software and toolchain, and the device’s capabilities, are open-source and well-documented," explains BATC chair Dave Crump. "The LimeSDR wins in that it is generally open source, with all the documentation online."

Osmocom-Analog Cellular Base Station Project

The creation of Andreas Eversberg, Osmocom-Analog - built out of a sense of nostalgia, he explains - allows vintage analogue cellular hardware to live again, connecting to a LimeSDR or LimeSDR Mini equipped PC-based base station.

Ultra-Low Cost LimeSDR-Based NMR Spectrometer

"I find the ability to modify and look at the source code to be really valuable," explains Carl Michal of his experiments with the LimeSDR in NMR spectroscopy. "I've learned a lot from tinkering with the LimeSDR that I'm sure I wouldn't have with a proprietary system."

LimeSDR Mini FPGA-Accelerated Real-Time Spectrogram

"I plan to implement the spectrogram accelerator on a LimeNET Micro and distribute it via LimeNET Store," says developer Gaspar Karm of his effort to implement a hardware-accelerated spectrogram on the LimeSDR family's field-programmable gate array (FPGA) chip.

Electromagnetic Field GSM Network

What do you get if you combine the Raspberry Pi with the LimeSDR Mini? If you're Sam Machin, Andrew Back, and colleagues, you get 16 rapidly-deployable GSM base stations for use at Electromagnetic Field 2018, a three-day event held in the middle of a field every two years.