N1MM Logger+

N1MM Logger+ is a computer program designed for logging contacts (QSOs) during amateur radio contests. The software manages the exchange of information, checks for duplicates, calculates scores, and controls radio equipment and peripherals, optimizing operation in competitions.

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• Contest logging. Supports an extensive catalog of amateur radio contests, both major and minor, on HF, VHF, and above. Includes specific operating modes for general contests, DXpeditions, satellite, and VHF. The internal database contains the rules and exchange structures for each contest, automating the logging process.
• Multi-operator support. Allows the setup of stations with multiple operators, either in the same location or remotely. The automatic synchronization function keeps logs and serial numbers unified across all instances of the program connected to the network.
• SO2R/SO2V operation. Facilitates simultaneous operation with two radios for a single operator. Manages audio, PTT, and transceiver control, enabling strategies like CQ Dueling. Integrates with specialized hardware interfaces such as microHAM and OTRSP.
• Radio interface. Directly controls transceivers from brands like Icom, Yaesu, Kenwood, Elecraft, and FlexRadio via serial ports or network. Adjusts frequency, mode, and reads the S-meter status. Supports the use of transverters for microwave bands.
• CW generation and decoding. Incorporates a telegraphy signal generator that can operate via a parallel port interface (LPT), a USB-serial converter, or a Winkeyer. For digital modes, it integrates with decoding software like MMTTY, Fldigi, or MMVARI.
• Graphic Bandmaps. Displays DX cluster spots in graphic maps per band. Each spot shows the frequency, callsign, and other information. A click on a spot tunes the radio to that frequency. Supports two simultaneous maps for operation with two VFOs.
• Available Window. Displays a summary of multipliers and zones needed on each band. Uses color coding to indicate, directly in the main window, on which bands a contact with the current callsign is missing.
• Voice message system (DVK). Plays pre-recorded audio messages through the computer's sound card. Supports external hardware interfaces for more advanced management of audio and PTT. Messages are assigned to keys or macros.
• Rotor control. Directs rotatory antennas using compatible software such as N1MM Rotor, PSTRotorAZ, or ARSWIN. Automatically calculates and sends the correct bearing to the station being contacted, based on the station's coordinates.
• Customizable macros. The user can configure complex sequences of commands, CW text, or DVK messages and assign them to keys or on-screen buttons. There is a broad set of predefined macros for common contest situations.
• Import and export. Generates Cabrillo files ready to be sent to contest organizers. Imports and exports logs in ADIF format for data exchange with other programs. Maintains a detailed transaction log for failure recovery.
• Telnet client. Connects to DX cluster networks to receive real-time spots. These spots are filtered and automatically presented in the graphical bandmaps and the telnet window. Allows sending commands to the cluster.
• Check Window. Verifies callsigns against a master database (Master.scp). Performs partial (N+1) matching to help identify difficult-to-copy callsigns under poor propagation conditions or interference.
• Support for mobile operations (Rover). Includes specific functions for contests that allow operation from multiple grid squares. Manages location changes and adjusts score and multiplier calculations accordingly.

The development of N1MM Logger+ began in the early 2000s as an evolution of previous logging programs for the Windows operating system. The original and current development team consists of amateur radio operators active in contests. The program is primarily written in Delphi (Object Pascal). It is maintained and continuously updated by a group of volunteer developers, with new versions adding support for new radios, contests, and features requested by the community. The first stable public version was released around the year 2003.

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