Amateur radio
Voice, CW and digital modes, PureSignal and speech processing, a QSO panel that sends the replies in turn, and an ADIF log.
Software-defined radio from HamTEK
Explore, understand, and work the radio spectrum
ArcturusSDR is a universal software-defined radio application for amateur radio and signal exploration. Multiple receivers, decoders, and identification for dozens of modes are all built into a single application.
For macOS on Apple Silicon and Microsoft Windows. A Linux version is planned.
One application for every kind of radio work
Whether you operate, listen, hunt for signals or measure them, it is all in the same window.
Short-wave listening
Several stations at once, DRM digital broadcasts, SSTV and weather fax pictures, and recording to listen again later.
Signal exploration
Watch wide stretches of spectrum, let each signal be identified, and decode data, utility and digital voice modes as they appear.
Signal analysis
A spectrum analyser with markers, constellation and eye views, and IQ recording at the radio’s full sample rate.
Signal identification
Know what you are looking at
The identifier measures every signal on the band and names it if it can: CW, FT8, voice, OFDM, AM, STANAG 4285 and more, marked on the panadapter by kind of service. A name ending in a question mark is a guess from the signal’s measures; it goes once a decoder reads the signal.
Panadapter and receivers
A panadapter for every receiver
Each receiver has its own spectrum and waterfall, band, mode and filter. Run several at once and hear them together, each at its own volume and place between left and right.
- Click a signal to tune to it; drag the passband to any width.
- Zoom in about the pointer for a closer look.
- Band plan, spots and memories drawn on the display.
- Noise blanker, noise reduction, notches and a splatter reducer for each receiver.
Your layout
Arrange it the way you work
A fully configurable interface with analogue and digital meters. Display elements are easily dragged and dropped into position around the central screen, and your arrangement comes back next time.
- Meters, band and mode buttons, passband and controls where you want them.
- Screens tabbed together, tiled side by side or popped out onto another monitor.
- Ready-made layouts for transceivers and for receive-only radios.
Decoders
Decoders for dozens of modes
The Sweeper decodes the signals around a receiver and lists every one it reads, newest first. A Decode slice reads one chosen signal without moving what you hear.
Keyboard
CWRTTYPSKMFSKDominoEXTHOROliviaContestiaMT63
Weak signal
FT8FT4WSPRJS8
Maritime, aeronautical and utility
NAVTEXDSCSITOR-AHFDLSELCALALESTANAG 4285MIL-STD-188-110
Digital voice and broadcast
FreeDV RADED-STARSystem FusionDMRP25DRM
Pictures
SSTVWeather faxHellQRSS
Time stations
MSFDCF77WWV
And much more
Transmit cleanly
PureSignal corrects the amplifier’s distortion from a sample of its own output, so less splatter goes either side of your signal. A full speech-processing chain, with transmit profiles that follow the mode and bandwidth.
Transmit is off until you allow it for each radio, and stops by itself on a timeout or high SWR.
Record now, decode later
Record audio as WAV or MP3, or a receiver’s whole span as IQ. Play a band back as if it were the radio, and the panadapters, identification and decoders all work on it.
Works with your other programs
TCI for loggers and data-mode programs, serial CAT, linear amplifier control, and an MCP server that lets an AI assistant such as Claude see and tune the receivers. It can never transmit.
Radios
Built for many radios
ArcturusSDR is on the air today with the radios below. More are being added, and each one is confirmed on the air before it is called working. Have one? We would love your help testing it.
Working today
- AMSAT-UK FUNcube Dongle Pro+
- Analog Devices Pluto+
- Apache Labs ANAN G2 and G2 Ultra (Saturn)
- Apache Labs ANAN-100
- Apache Labs ANAN-7000DLE, MkII and MkIII
- Ettus Research USRP B200
- Expert Electronics SunSDR2 DX
- FlexRadio FLEX-6300
- FlexRadio FLEX-8400, 8400M, 8600 and 8600M
- Hermes-Lite 2 (and Radioberry)
- KiwiSDR receivers
- Linoobs Brick2 (15 W)
- RTL-SDR dongles
- SDRplay RSP family
Being tested
- Apache Labs ANAN-G2E
- Expert Electronics SunSDR2 PRO
- FlexRadio FLEX-6400
No radio?
Two simulated radios are built in, so you can learn every control, even transmit and PureSignal, without a radio at all.
39 more radios are in the app, waiting for someone with one to try them. See every radio, linear amplifier and rotator controller, and how far each one has got
Beta testing
Help us test ArcturusSDR
ArcturusSDR is about to enter beta testing. Testers get early builds, a direct line to us through the issue tracker, and the chance to shape what the release does.
-
Starting soon
Private beta
Until the end of November 2026
A small group of invited testers, chosen to cover as many radios and computers as we can.
-
Next
Public beta
From December 2026
Open to anyone who wants to try it, on every radio we support by then.
-
Then
Release
After the public beta
The first full release of ArcturusSDR, with its supported radios confirmed by testers.
Want to take part?
Create a free account, then tell us which radio and computer you use and how you would use ArcturusSDR. We will be in touch about the private beta.
Create an account and applyAlready have an account? Sign in.
Hear when it is released
Get an email when the public beta opens and when each new version is released. We will ask you to confirm your address first, and every email has a link to unsubscribe.