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LimeSDR Quick Start

So you've received your LimeSDR board... what next? This page is intended to help you get up and running as quickly as possible.

1 Assemble the hardware

LimeSDR-USB acrylic case asembly.jpg

Unless you have U.FL to SMA cables for all the RF ports on the LimeSDR — and optionally a suitable case — decide which RF ports you are going to connect to.

LimeSDR-USB RF ports
Label Description
RX1_H Channel 1 RX - frequencies above 1.5GHz
RX2_H Channel 2 RX - frequencies above 1.5GHz
RX1_L Channel 1 RX - frequencies below 1.5GHz
RX2_L Channel 2 RX - frequencies below 1.5GHz
RX1_W Channel 1 RX - wideband
RX2_W Channel 2 RX - wideband
TX1_1 Channel 1 TX - primary (all frequencies)
TX2_1 Channel 2 TX - primary (all frequencies)
TX1_2 Channel 1 TX - secondary (all frequencies)
TX2_2 Channel 2 TX - secondary (all frequencies)

Note that:

  • optimal RX performance is provided by using the *_H and *_L ports with the frequency bands shown
  • the secondary TX ports for each channel can be used with power amplifiers covering different bands and for loopback etc.
  • which ports are used is selected in software


If you have a LimeSDR Acrylic Case see the assembly instructions.

2 Connect to your computer

USB3 cable.jpg

Depending on which board variant you have, it will require one of the following USB 3.0 cables:

  • Type A plug to Type Micro B plug
  • Type A plug to A socket

3 Install Lime Suite

Lime suite comps.png

Lime Suite provides an SDR driver and a configuration GUI, along with numerous utilities. Support is provided for the following platforms:

  • Linux (Ubuntu packages)
  • Mac OS X (Homebrew)
  • Windows (PothosSDR Installer)


It can be installed from source or via packages/installler. Note that a O/S driver must also be installed on Windows.

For further details see Lime Suite documentation.

4 Test

LimeSDR-USB SelfTest FFT.jpg

4.1 Basic operation

Low level testing of RX and TX directly via the Lime Suite GUI in LimeSDR-USB Quick Test. The loopback test described is the simplest and most direct way of confirming that you have a functioning board with appropriate USB controller firmware and FPGA gateware loaded.

4.2 SoapySDR

The Lime Suite wiki page explains how LimeUtil can be used to get a list of available devices, and SoapySDRUtil to verify that it will be available to SDR ecosystem applications via SoapySDR.