Explore theRF spectrum.

A wireless Software Defined Radio (SDR) for exploring planes, boats, radio and everything RF

500 kHz – 1.7 GHzSDR Receive range

Jan 2027Est UK shipping

SDR limit 1.7 GHz

88–108 MHzFM radio 144 MHzAmateur 162 MHzBoats 433 MHzEveryday devices 1090 MHzAircraft 2.4 GHzDrones

5 MHz1.5 GHz

A simple way into the world of signals.

Whether you already have 10 SDRs or just want a new way to explore planes. LittleSpec makes it easy to explore the radio spectrum on the go.

1090 MHz

Aircraft ADSB

Aircraft constantly broadcast their position, identity, altitude and speed. LittleSpec receives them directly at 1090 MHz. Making a live map of the planes above you, no internet required.

2.4 GHzUsing onboard wifi chip

Drone Remote ID

Modern drones are required to broadcast Remote ID. This includes their position, altitude and the pilot’s location. LittleSpec listens with its onboard Wi-Fi chip and plots them just like aircraft.

433 MHzDecoding coming soon

ISM band devices

Key fobs, doorbells, weather stations, tyre sensors etc. We're getting together a decoder and way to share decodings for any ISM devices!

162 MHzMarine AIS

Nearby vessels, plotted live.

Ships report their name, position and speed over AIS. The maritime alternative to ADS-B. LittleSpec plots the vessels around you as they report in.

1.8 to 440 MHz

Amateur/Ham radio

Truck drivers, hobbyists and radio enthusiasts all use amateur radio to communicate. LittleSpec lets you listen in!

88–108 MHz + DAB

DAB and FM radio

It's called radio after all! Listen to DAB and FM radio on the go, directly from the air!

Your window into the spectrum.

LittleSpec pairs with your phone over Bluetooth. The iPhone app is built and ready for App Store submission. The Android app ships with the first units in January.

LittleSpec app — live spectrum and waterfall tuned to an FM station at 102.8 MHz

Full spectrum capabilitiesTune, zoom and listen

LittleSpec app — aircraft heard overhead plotted on a map

Aircraft overheadLive ADS-B on your map

LittleSpec app - a selected aircraft with its registration, airline, type, route, altitude and speed

Every flight’s storyRegistration, altitude and speed (images + route require data)

LittleSpec app — history playback scrubbing back through aircraft seen over the last month

Replay the dayReplay the history of all the planes you've seen

LittleSpec app — the aircraft log, a grid of every aircraft seen with photos

Aircraft pokedex!Every aircraft you've seen with your scanner

LittleSpec app — FM and DAB radio with favourites, recents and a station grid

FM & DAB radioScan, favourite and listen

LittleSpec app — now playing YO1 Radio on FM 102.8 with a live level visualiser

Now playingListen to DAB and FM through your phone

LittleSpec app — the Acklam Wold transmitter with the FM and DAB services it carries

Know the mastSee all the FM and DAB masts right on the map

A little device with big ambitions

Drag to spin

Final plastic finish is still being decided, but it will be a smooth finished resin print.

Receiver: We use an official RTLSDR Blog V4/V4L (when stocks run out of V4's) with wide-range reception and onboard HF upscaling
Antenna: Included wideband external, extendable antenna. Swap in any SMA antenna.
Connectivity: Wi-Fi + Bluetooth — iPhone app ready now, Android app ships with the first units in January; doubles as the 2.4 GHz drone Remote ID receiver
Power: 3,350 mAh rechargable battery, estimated up to 8 hours of constant use or far longer in the background, USB-C charging
Enclosure: Resin printed tough shell smoothed and finished