Listen for ISS with Raspberry Pi 3 and LimeSDR

LimeSDR 100 kHz to 3800 MHz SDR Transceiver - Credit Lime Microsystems

LimeSDR 100 kHz to 3800 MHz SDR Transceiver – Credit Lime Microsystems

Andrew Back G7JKB writes in Design Spark about using the Raspberry Pi 3, he is very adamant about this technology, his long journey to mastery started with the alluring Teardrop Flags at a technology trade show some years ago.

LimeSDR to receive amateur radio transmissions from the International Space Station. Update: The article refers to the SoDeRa SDR but due to a trademark issue the name is now LimeSDR.

Raspberry Pi 3 - Credit RS-Online

Raspberry Pi 3 – Credit RS-Online

The LimeSDR board was only formally announced in February 2016 at the Mobile World Congress. Developed by Lime Microsystems in Guildford, Surrey and featuring their latest Field programmable RF (FPRF) transceiver, the LMS7002M, the SoDeRa is capable of supporting just about any wireless standard that operates between 100 kHz and 3.8 GHz. As if this wasn’t enough, it’s also dual channel — MIMO — with two each fully independent transmit and receive channels.

The board also includes an Altera Cyclone IV FPGA, enabling high throughput processing to be carried out in hardware, between the transceiver and FX3 USB 3.0 controller.

Read Andrew’s article at

Watch LimeSDR board – create apps for wireless networks

Launch announcement

Lime Microsystems, Surrey Research Park, GU2 7YG


Andrew Back G7JKB

AMSAT-UK at the RSGB Convention

Howard Long G6LVB talking about the FUNcube Dongle SDR at the RSGB Convention Gala Dinner

Howard Long G6LVB talking about the FUNcube Dongle SDR at the RSGB Convention Gala Dinner

The after-dinner speaker at the RSGB Convention Saturday night Gala dinner was Howard Long, G6LVB, who spoke about the trials and tribulations involved in developing the ground station segment of the FUNcube satellite project which became the successful FUNcube Dongle SDR.

The Astro Pi will be used by UK Astronaut Tim Peake KG5BVI on the ISS

The Astro Pi will be used by UK Astronaut Tim Peake KG5BVI on the ISS

On Sunday, October 11 at 11:45 BST Ciaran Morgan M0XTD gave a presentation to the Convention about Amateur Radio on the International Space Station (ARISS) and the upcoming mission to the ISS by UK astronaut Tim Peake KG5BVI.

Ciaran described the Astro Pi which Tim will be using on the ISS. It is hoped this will be used as a video source for the Space Station’s HamTV system.

School Shortlist for Tim Peake Space Station Contact

FUNcube Dongle SDR

Read the Essex Ham review of the RSGB Convention at

Ham Radio in Hackaday Prize Finals

SatNOGS - Satellite Networked Open Ground Station

SatNOGS – Satellite Networked Open Ground Station

Two of the five finalists for the Hackaday Prize involve amateur radio, the prize is a ticket to travel into space.

Six months ago Hackaday challenged their readers to realize the future of open, connected devices. They have now announced the five finalists vying for The Hackaday Prize.

The SatNOGS project involves a network of satellite ground stations, they are using crowdsourced data collection for something that is literally out of this world: listening to the ever-increasing number of amateur satellites orbiting the planet.

PortableSDR is a completely stand-alone (no computer needed), compact, Portable Software Defined Transceiver. Originally designed for backpacking use by Ham Radio operators. It includes complete coverage up to about 30 MHz.

The contest was open to entries from around the world with the exception of residents of Quebec, Italy, Cuba, Iran, Myanmar, North Korea, Sudan, Syria, or any jurisdiction where the Contest would be restricted or prohibited by law.

The winner of the Hackaday Prize for the best example of an open, connected device should be announced at the Electronica trade show in Munich on November 13.

Announcing the Five Finalists for The Hackaday Prize

SatNOGS – Satellite Networked Open Ground Station

Reception of UKube-1 FUNcube-2 Beacon

FUNcube Dongle Pro+ Software Defined Radio

FUNcube Dongle Pro+ Software Defined Radio

Many stations, who have their FUNcube Dongle Software Defined Radio (SDR) setup to automatically receive telemetry signals from FUNcube-1, will have noticed that they are now also seeing the telemetry from the FUNcube-2 sub-system which is flying on-board the UKube-1 CubeSat.

UKube-1 CubeSat (with FUNcube-2 sub-system) - Image credit Clyde Space

UKube-1 CubeSat (with FUNcube-2 sub-system) – Image credit Clyde Space

The FUNcube telemetry transmitter has been enabled on 145.915 MHz (+/- Doppler) as part of the commissioning program for UKube-1 which is presently underway.

Whilst the existing FUNcube-1 Dashboard does not correctly display the FUNcube-2 telemetry, it is forwarding the data correctly to the Warehouse and this is greatly appreciated by the team.

The FUNcube team are not yet able to release a FUNcube-2 specific Dashboard App, they are, however, working to provide a fully functional FUNcube-2 page on the Data Warehouse as soon as possible.

In the meantime please continue to listen and, where you are able, to keep the data flowing to the Data Warehouse – many thanks for your support.

Dashboard App – Telemetry Decoder

Data Warehouse – Telemetry Archive

FUNcube Dongle LF/MF/HF/VHF/UHF Software Defined Radio

UK Space Agency UKube-1 update August 26, 2014

Satellite Today, August 26, 2014: Communications Anomaly Hampers UK SmallSat

PhD Student Receives FUNcube Dongle SDR

FUNcube Dongle Pro+ Software Defined Radio

FUNcube Dongle Pro+ Software Defined Radio

The University of Birmingham reports that Graham Kirkby, a PhD student in the Space Environment and Radio Engineering group, School of Electronic, Electrical and Computer Engineering, has won the prize for the best student presentation at the 2014 UK CubeSat Forum Workshop

The workshop was hosted by the Satellite Applications Catapult Centre and brought together 150 representatives from over 100 organisations in the UK and international CubeSat community.

Graham’s research focuses on the development of antennas for the Wideband Ionospheric CubeSat Sounder Experiment (WISCER). CubeSats are small satellites that conform to the CubeSat standard developed by CalPoly and Stanford University. WISCER is a 3U cubesat (10×10×30 cm) that aims to provide measurements of the wideband ionospheric radio channel as a precursor to future space radars.

The prize included a FUNcube Dongle Pro, kindly donated by AMSAT-UK. This is a small USB software defined radio that has been developed to allow communications with the FUNcube CubeSat.


FUNcube Dongle SDR

Southampton University Wireless Society WebSDR



The Southampton University Wireless Society (SUWS) Web-based software defined radio (SDR) has been used to receive signals from the new amateur radio LitSat-1 satellite.

The Lithuanian satellite LitSat-1 was deployed from the ISS on February 28 and the builders of the satellite have been able to use the SUWS WebSDR to receive the satellite when it is out of the range of Lithuania.

Noel G8GTZ, Martin G8JNJ and Phil M0DNY from the Southampton University Wireless Society, set up the WebSDR near Basingstoke in the UK. It currently supports parts of the 10 GHz, 1296 MHz, 432 MHz and 144 MHz bands and can be listened to from anywhere in the world.

The link is:

The 434 MHz receive capability is very popular for listening to High Altitude Balloon (HAB) signals.

A couple of notes when using the WebSDR:

– If tracking balloons please set your location in dl-fldigi to somewhere around 51.294, -1.131 so we don’t have any fake receiver lines on the map!

– Connection to the site is over a several km wifi link, so once you’ve found the signal, please switch off your waterfall view (Set to ‘blind’) to save bandwidth for others.

– The waterfall speed will also be automatically limited as the number of users increases.

Darius Kybartas LY3DA says that when listening for LitSat-1 on the WebSDR receiver enter your call sign or name in the “Your name or callsign” box and select a frequency of 145850 kHz with FM modulation.

LitSat-1 is very close to the International Space Station (ISS) so you can get a rough idea of when it will be in range of the UK based SUWS WebSDR by looking at the predictions for the ISS on the N2YO tracking website (use 51.294 North, 1.131 West for the coordinates).