LimeNET Micro

by Lime Microsystems

A software-defined radio platform with integrated processor for creating self-contained wireless networks

View all updates Aug 19, 2019

QO-100 Satellite Uplink with LimeNET Micro and LimeRFE

by Andrew Back

Daniel Estévez, who previously had initial success using LimeRFE with WSPR, has also used a LimeSDR Mini to create a QO-100 ground station — something that was covered recently in a Crowd Supply Field Report. In his latest blog post, Daniel details how he paired a LimeNET Micro with a LimeRFE prototype to create a complete solution capable of accessing the QO-100 narrowband transponder using an off-the-shelf 24 dBi Wi-Fi grid antenna.

Daniel first transmits an automated CW beacon, and the signal is 12 dB above the noise floor, which is seemingly the average power for an SSB station in the transponder. He next demonstrates SSB transmission using a GNU Radio flowgraph running on his laptop, which streams I/Q samples over the LAN to the LimeNET Micro. With this running at his location in Spain, he was able to make contact via satellite with Kurt Moraw DJ0ABR, a fellow radio amateur in Germany. Despite operating with one fifth of Kurt’s transmit power, and an antenna with less gain than Kurt’s 1.2m dish, Daniel’s signal was only 4 dB lower than that of DJ0ABR.

For further details, see Daniel’s blog post.

About the Author

Andrew Back

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Product Choices


LimeNET Micro

LimeNET Micro - the perfect way to start experimenting with and building your own wireless networks, protocols, and testers. Complete with a Raspberry Pi Compute Module 3.


Acrylic Case for LimeNET Micro

Keep your LimeNET Micro safe in this custom acrylic case which features a fan and heatsink for the Compute Module. This pledge level is for the case kit only. LimeNET Micro and antennas not included.


LimeNET Micro with Aluminum Kit

This kit comes with a custom-made plastic and aluminum case, a LimeNET Micro, a Raspberry Pi Compute Module 3 (pre-loaded), and two antennas. The case not only keeps your LimeNET Micro safe, but it also helps reduce noise interference. Perfect to slip into your bag for all your on-the-go wireless adventures. This is at least a $30 savings over the post-campaign price.


Multi-band 4G/3G/2G Monopole Antenna

From the Crowd Supply Basics project.

A TG.09 4G/3G/2G cellular hinged SMA(M) mount monopole antenna.


Adapter for Classic Raspberry Pi

A small SO-DIMM form factor board plus ribbon cable to enable use of a classic/consumer Raspberry Pi with the LimeNET Micro.


Lime Microsystems

Working toward the democratization of wireless communication through an open source ideology.

Ebrahim Bushehri

Andrew Back

Zack Tamosevicius

Karolis Kiela

Andy Chang

Ignas Skudrickas

Christy Chuang

See Also

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