OTA: LimeSDR GPIO, Mini Give-away, SpaceX Sats and More

The LimeSDR General-Purpose Input/Output (GPIO) Board, designed to make it easier to interface the LimeSDR with external hardware, is beginning its journeys to backers following a minor delay in the assembly process. Designed to expand the LimeSDR’s capabilities, the GPIO Board provides individually-configurable bi-directional level-shifted input/output pins for the GPIO pins 0 through 7 inclusive…

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OTA: Saving a Satellite, RAN Competition, 3D-Printed Foxhole Radios, and More

Sage Hansen's Foxhole Radio

Dr. Danny Webster’s Wireless Masterclass series continues with a look at more advanced digital radio concepts and implementations including the detection and reduction of data loss The fourth in an ongoing series of presentations, Wireless Masterclass 4 follows on from the introductory video for those new to digital radio, an in-depth look at the LimeSDR…

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WM4: Advance Digital Radio

The fourth instalment of the Wireless Masterclass series has been published to YouTube and this takes a look at advance digital radio, with Dr Danny Webster exploring topics including, detecting and reducing data loss, spread spectrum, OFDM and MIMO. If you missed the previous episodes these can be found at: WM #1: What is Digital…

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OTA: LimeSDR Mini Demos, CubeSats, Discone Antennas, and More

Titan Missile Museum Discone Antenna

The LimeSDR Mini crowdfunding campaign page continues to deliver impressive demonstrations of the device’s capabilities, including the creation of what is quite likely the world’s smallest Digital Video Broadcast (DVB) transmitter. The first demonstration, from Evariste Okcestbon, pairs a LimeSDR Mini with a Raspberry Pi Zero to broadcast footage from a Raspberry Pi Camera Module…

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OTA: RAN Competition, ScratchRadio Updates, a Ham Watch, and More

Travis Goodspeed's GoodWatch

BT and Lime Microsystems have launched a competition for all LimeSDR, LimeSDR Mini, and LimeNET users: build a radio access project and pick yourselves up a LimeSDR with official aluminium case plus the potential to publish your creation in the LimeNET app store. Designed to encourage the development of software-defined radio access applications – cellular…

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WM #3: The Real Radio Link

The third instalment of the Wireless Masterclass series has now been published to YouTube and this takes a look at the real radio link, with Dr Danny Webster covering topics including the noise floor and line-of-sight link budgets, bad neighbours, and receiver and propagation effects on received signals. This is highly recommended viewing for anyone…

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OTA: LimeSDR Mini v1.0, DVB UHD-1, RadFxSat, and More

LimeSDR Mini v1.0

Karl Woodward’s LimeSDR Made Simple series headed into its eight instalment this week with a look at how to program the LimeSDR from a Linux host. “Very early on in episode one we promised to work from SDR novice to API programming examples in small, bite sized chunks,” Karl explains of the series. “Having done…

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LimeSDR Made Simple Part 8: C Examples and SoapySDR API

LimeSDR Hacker Case

Welcome to the eighth instalment of the LimeSDR Made Simple series. Very early on in episode 1, we promised to work from SDR novice to API programming examples in small, bite sized chunks. Having done many of those steps it’s now time to take the final one and start programming. For those who have read…

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WM #2: The LimeSDR and LMS7002

The second video in the Wireless Masterclass series has been published to YouTube and in this Dr Danny Webster introduces the LimeSDR and takes a look at the LMS7002 FPRF architecture, covering the analogue and digital halves of the chip for both transmit and receive chains. The highly integrated and incredibly flexible LMS7002 is at…

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LimeSDR Made Simple Part 7: More Than One Way – Continued

Receiving and transmitting ASK/OOK signals in GNU Radio Welcome to the seventh instalment of LimeSDR Made Simple. In this post we pick up where we left off in the previous, trying to mimic the simplest of radio devices. In the last instalment we got to a point where we could receive the bit stream, but…

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