Users attempting to run the software on Windows 11 have had to resort to extreme measures, including disabling “ALL security settings in the computer's AntiVirus, firewall, and browser,” which is an unacceptable risk for most computer users. The developer, Norbert, has been widely criticized for a lack of communication and for failing to provide a timely update to address these critical compatibility issues.
When signals dropped below S3 (Signal-to-Noise ratio approx 6dB), FLDIGI started producing gibberish. CW Skimmer lost the signal entirely in the waterfall.
| Feature | MRP40 | CW Skimmer | CWGet | FLDIGI | |---------|-------|------------|-------|--------| | | ★★★★★ (Best) | ★★★★☆ (Good) | ★★★★☆ (Good) | ★★★☆☆ (Adequate) | | Weak‑signal performance | ★★★★★ (Outstanding) | ★★★★☆ (Good) | ★★★☆☆ (Fair) | ★★★☆☆ (Fair) | | Speed range (tested) | 5–80+ WPM | 5–50+ WPM | 5–60+ WPM | 5–50+ WPM | | Display multiple signals | ★★★☆☆ (No) | ★★★★★ (Yes) | ★★★☆☆ (No) | ★★★☆☆ (No) | | Transmit capability | ★★★★★ (Yes) | ★★★☆☆ (No) | ★★★☆☆ (No) | ★★★★★ (Yes) | | Cost | €49.90 (paid) | ~$75 (paid) | ~$40 (paid) | Free | | Best use case | Contest logging, weak‑signal DX, ragchewing | Band mapping, spotting networks | General use | All‑in‑one digital modes | mrp40 morse code decoder verified
Are you looking to or do you want to transmit CW via keyboard too?
An audio interface cable (a simple 3.5mm auxiliary cable or a dedicated digital interface like a SignaLink USB, RigBlaster, or West Mountain Radio interface). Users attempting to run the software on Windows
A reviewer from the CQ‑Contest mailing list offered perhaps the most dramatic verification: "While other readers would lose copy in QRN/QRM conditions, MRP40 keeps on copying – especially weak signals (which would kill other readers.) And now, I can run at over 30 wpm with no help at all".
To give you a quick overview, here are the essential specifications for MRP40: CW Skimmer lost the signal entirely in the waterfall
The software utilizes advanced digital signal processing (DSP) algorithms to copy weak, fading, or heavily interfered CW signals. Verified Performance Capabilities
Allowing them to stay active in CW modes. Conclusion
MRP40 excels at pulling signals out of the noise floor. While human ears remain the gold standard, MRP40 successfully copies signals that are barely visible on a standard waterfall display. 2. Dynamic Speed Adaptation
For users demanding a "verified" solution, the MRP40 offers specific features that set it apart from basic software.