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| N1MM Logger+ | |
|---|---|
| Name | N1MM Logger+ |
| Developer | K1LZ, K9OM, W2DEA et al. |
| Released | 2011 |
| Latest release | 2026 |
| Operating system | Microsoft Windows |
| Genre | Amateur radio contest logging |
| License | Freeware |
N1MM Logger+ is a Windows-based contest logging application used by amateur radio operators, contest clubs, contest organizers, and competitive stations worldwide. It interconnects with station hardware, digital modes, and scoring networks to support high-rate events such as the ARRL DX Contest, CQ World Wide DX Contest, and regional competitions organized by entities like the Radio Society of Great Britain and the American Radio Relay League. The software is maintained by a development team drawn from prominent amateur radio operators and integrates with standards and protocols established by organizations including the International Amateur Radio Union, IARU Region 1, and amateur radio contest committees.
N1MM Logger+ provides logging, real-time scoring, multiplier tracking, and networked multi-operator functionality for contests such as the CQ WPX, ARRL Field Day, IARU HF World Championship, CQWW WPX, and continental contests run by groups like the RSGB. It supports band maps, call sign lookups via services like QRZ.com, and integration with propagation prediction tools from institutions such as NOAA and research centers like MIT Haystack Observatory. The program is designed to operate on stations run by clubs like the Dakota Contest Club or multinational teams participating in events sanctioned by the World Radiosport Team Championship framework.
Key features include real-time multi-operator networked logging used in high-rate operations like EU HF Championship and ARRL DX; automated sent/received exchange formatting for events governed by rules from the CQ Magazine contesting community; and support for digital modes aligned with standards promoted by bodies such as the IETF for serial and network protocols. It offers rig control compatible with radios from manufacturers such as Icom, Yaesu, Kenwood, and FlexRadio Systems, and supports digital interfaces for software defined radio projects developed at institutions like Gnuradio-associated communities. Logging features include contest-specific dupe checking and Cabrillo export required by organizers like the Contest University instructors and adjudicators at CQ World Wide.
Originally inspired by earlier logging efforts from the 1990s and tools supported by clubs like the Potomac Valley Radio Club, development accelerated in the 2000s with contributions from notable contesters and authors associated with publications such as QST and CQ Amateur Radio. The project evolved through collaborative contributions from developers associated with callsigns including K1LZ, K9OM, and W2DEA and has been influenced by software engineering practices from organizations like Microsoft Research and community-driven models used by projects endorsed by the Free Software Foundation and contest-oriented groups such as Contest University alumni. Major milestones correspond with rule changes by organizations like the ARRL and regulatory shifts influenced by bodies such as the Federal Communications Commission.
Operators deploy the software in single-operator and multi-operator environments typical of events overseen by contest committees from the RSGB or the ARRL. Typical operation includes real-time exchange handling for contests like CQWW and ARRL Sweepstakes, logging to Cabrillo formats accepted by adjudicators from CQ Magazine and ARRL Contest Branch, and coordinating operators trained in methodologies taught at Contest University and regional workshops hosted by clubs such as the Frankford Radio Club. Integration with callbooks like QRZ.com and tools developed by research labs such as Stanford Linear Accelerator Center-affiliated teams for database indexing improves station efficiency.
The application interoperates with transceivers from Icom, Kenwood, Yaesu, and pan-adapters and SDRs from FlexRadio Systems and Elecraft, and interfaces with rotors and amplifiers manufactured by companies like Yaesu-Musen-linked vendors. It supports audio and digital interfacing standards used by digital-mode clients derived from projects promoted by PSKmail communities and uses serial and network control approaches aligned with specifications from organizations such as the IEEE. Integration paths include packet and networked logging used in multinational operations supported by clubs like the Clermont Contest Group and equipment testing labs affiliated with universities like Virginia Tech.
The software is central to operations in major international contests administered by organizations including the ARRL, CQ Magazine, IARU, and national societies such as the RSGB and the Deutsche Amateur Radio Club. Community support comes from contest clubs such as the Mad River Radio Club, North Coast Contesters, and international teams participating in events organized under the auspices of the World Radiosport Team Championship and regional contests run by the Fédération Internationale de l'Automobile-style governance in amateur radio (via the IARU structures). Learning resources are provided by contributors who publish in QST, present at Dayton Hamvention, and teach at Contest University sessions.
Distributed as freeware, the package is available through mirrors and distribution channels used by amateur radio communities including the ARRL and major clubs such as the Frankford Radio Club and Mad River Radio Club. The development model reflects volunteer-driven contributions similar to community projects associated with organizations like the Free Software Foundation and repositories maintained by groups modeled after the collaborative approaches of the Apache Software Foundation. Packaging and installer updates have been discussed at events like Hamvention and in periodicals such as CQ Amateur Radio and QST.
Category:Amateur radio software