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Scan the QR code with WeChat to join the MRRC-HAM group.
QR code valid until Aug 29, 2026. Will be updated when refreshed.
Open-source remote radio control ecosystem for modern HAM operators. Control HF and SDR radios from anywhere — browser, phone, or native iOS app.
Scan the QR code with WeChat to join the MRRC-HAM group.
QR code valid until Aug 29, 2026. Will be updated when refreshed.
Choose by your radio hardware first, then by your preferred client.
| I have... | Use | Why |
|---|---|---|
| Any HF radio with CAT | MRRC | Universal remote control via Hamlib/rigctld |
| Yaesu FT-710 | MRRC FT-710 | Software SCU-LAN10 replacement via one USB cable |
| Yaesu FT-710 or Icom IC-7300 | MRRC Modern | Pluggable-backend USB remote (FT-710 / IC-7300 / IC-7300MK2) |
| SunSDR2 DX | SunMRRC | SDR server with UDP IQ demodulation and real-time waterfall |
| iPhone + SunSDR2 DX | SunsdrMobile | Native iOS client built on top of SunMRRC protocol |
| EFHW antenna + auto-tuning | EFHW | ESP32-S3 servo-driven Fuchs ATU, bias-tee powered, WiFi-controlled |
| Headless FT8/FT4 operation | MRRC-FT8 | WSJT-X Improved DSP core, supervised worker, mobile cockpit |
Seven open-source remote control projects — universal HF rigs, SDR platforms, digital-mode DSP servers, antenna automation, native mobile apps, and multi-radio USB-native control.
Universal web-based remote transceiver control. Works with any HF radio via Hamlib/rigctld. Opus-optimized audio, WDSP noise reduction, AI voice assistant, CW/FT8 digital modes, studio-grade TX audio processing, and 3-layer PTT safety.
Software SCU-LAN10 replacement for the Yaesu FT-710 HF/50MHz transceiver. Real-time waterfall spectrum via FT4222 SPI at ~21fps, bidirectional Opus 48kHz audio, full CAT control over 4 WebSocket channels — direct serial, no Hamlib needed.
Pluggable-backend USB-native remote control for Yaesu FT-710 and Icom IC-7300/IC-7300MK2. FT4222 SPI or CI-V spectrum, bidirectional Opus 48kHz audio, full CAT/CI-V control over 4 WebSocket channels — one codebase, multiple radios.
SunSDR2 DX-specific FastAPI backend server. Server-side IQ demodulation, real-time 512-bin FFT waterfall, dual-codec Opus/PCM audio, TX SSB voice modulation via Hilbert transform, per-band DRIVE power control, and 5 WebSocket endpoints for web and native clients.
Native iOS SwiftUI app for SunSDR2 DX remote control. Connects to the SunMRRC backend for real-time spectrum waterfall, low-latency audio, DSP noise reduction, one-touch PTT, 3×3 channel memory grid, and Keychain-secured auto-login. Zero third-party dependencies — pure Apple frameworks.
End-Fed Half-Wave antenna research and automation. ESP32-S3 continuous servo tuning adapter with bias-tee coaxial power, WiFi WebSocket control, 100W PEP, 40m–10m coverage. Fuchs LC coupler with T200-6 toroid and air variable capacitor — deeply integrated with the MRRC ecosystem.
Headless FT8/FT4 server running the WSJT-X 3.0.2 Improved DSP core behind a supervised worker. UTC slot discipline, a sequencer that closes one standard QSO per operator selection, 3 kHz waterfall, durable SQLite logging with ADIF export, and a landscape mobile cockpit — live on the FT-710 station.
Different hardware demands different architectures. Our projects span the full spectrum — from traditional CAT-controlled HF rigs to USB-native multi-radio control, direct-IQ SDR transceivers, and antenna automation.
Why four approaches? Traditional HF radios expose a serial CAT interface. The FT-710 adds FT4222 SPI for real spectrum data — no SCU-LAN10 dongle needed. MRRC Modern extends the same USB-native architecture to the Icom IC-7300 family via pluggable backends. The SunSDR2 DX streams raw IQ samples over UDP, requiring server-side demodulation. Different radios, different protocols, one shared design system.
Agents run the inner loop against written contracts; humans keep intent, boundaries and the final judgment. Field discipline produced those contracts — and it still signs off for the parts agents cannot.
Project metrics and architecture facts visible before deployment decisions.
All projects are open source. Dive into the documentation, try the live demos, or deploy your own instance.