CQ WW RTTY DX Contest
September 26-27, 2020
Starts: 0000 GMT Saturday
Ends: 2359 GMT Sunday
CQ WW RTTY RULES
GOAL: For amateurs around the world to contact as many other amateurs in as many CQ zones, countries, and W/VE QTHs as possible.
BANDS: Five bands only: 3.5, 7, 14, 21 and 28 MHz. Observance of established band plans is strongly encouraged.
EXCHANGE: RST report plus CQ zone number of the station location (e.g., 599 14). Stations in the continental USA and Canada also send QTH (e.g., 599 05 MA).
All Rules can be read and download in several languages at the official CQ WW RTTY Web Site
Free RTTY Software
Here is a selection of popular free to use RTTY programs, many more links to RTTY software can be found on our dedicated links category.
JE3HHT
MMTTY V1.70K, released June 4, 2017, provides a full 3.5MB installation for RTTY operations on Windows platforms including XP, Vista, and Win7. The software, developed by JE3HHT, utilizes a soundcard for RTTY decoding and encoding, with support for external FSK keying via parallel or serial ports, including USB serial adapters. An MMTTY Engine V1.70K is also available, specifically designed for integration into other commercial amateur radio programs requiring RTTY functionality. Older versions such as MMTTY V1.68A (September 29, 2010) and MMTTY V1.66G are accessible, alongside a non-installer version (MMTTY168A-i.zip) for experienced users. The resource includes an updated ARRL.DX file for callsign lookup and offers a comprehensive 18MB PDF help file for offline viewing or download. Support for the software is directed to a group.io community. MMTTY integrates with **COMFSK** and **EXTFSK/EXTFSK64** for precise FSK keying, enabling direct radio control. The site also hosts MMJARTS V1.03, a 254KB utility released September 6, 2002, which generates log and summary sheets specifically for the JARTS RTTY contest, linking to the official JARTS website for contest information.
W1HKJ
Presents the official download hub for the _Fldigi_ suite of amateur radio software, detailing its core components and associated utilities. The resource provides direct access to executables and source code for Linux, FreeBSD, macOS, and Windows operating systems, alongside comprehensive documentation in PDF format for each application. Specific version numbers and release dates are listed for _Fldigi_, _Flrig_, _Flmsg_, _Fllog_, _Flnet_, _Flaa_, and other tools, indicating active development and maintenance. It outlines the distinct functions of each program, such as _Fldigi_ for digital modem operations, _Flrig_ for transceiver control, and _Flmsg_ for NBEMS messaging. The site also references support communities on groups.io for Linux, NBEMS, and Windows users, fostering a collaborative environment for troubleshooting and usage guidance. Furthermore, it links to third-party repositories and mirrors, including SourceForge, for alternative download options and distribution-specific packages like RPMs for OpenSUSE and COPR for Fedora. The resource also includes links to _RigCat_ XML files for transceiver control configurations and a dedicated Wiki for _Fldigi_, offering additional technical insights and build instructions. This centralized repository serves as the primary distribution point for the W1HKJ software ecosystem, ensuring users can access current versions and support materials.
MixW Software – Update DLL
Many of the Cabrillo format problems in submitted logs are from MixW users. There is a new DLL for CQ WW RTTY that must be used.
Please install the MixW DLL for CQ WW RTTY, available here. Instructions for configuration of MixW and how to create a proper Cabrillo file are here.
CQ ZONES
