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HamScope is a freeware windows multi-mode communications package for amateur radio that supports: PSK31 BPSK and QPSK RTTY ASCII MFSK16 PACKET CW. Support radio control interface for several ICOM, TenTec, Kenwood, and Yaesu transceivers. Compatible with DXbase LOGic 7 RYLogit TRX-Manager YPLOG. By KD5HIO Glen

MixW V3 is a software program for amateur radio operators that supports PSK31, RTTY, SSTV, MFSK, Olivia, Hellschreiber, and other modes. It provides features such as logging, DXCluster, telnet access, log backup, rotor, and CAT control. The page offers downloads for Olivia support DLL, Q15X25 support DLL, contest DLLs and macros, serial port emulation drivers, virtual network adapter drivers, Ax25Inet program, and help files. It also includes important notes for Olivia mode operation, such as sound card sample rate calibration and signal placement guidelines.

Windows freeware multimode program by F6CTE it supports BPSK31 QPSK31 PSK63 PSK63F PSK10 PSKFEC31 PSKAM CW CCW THROB 4 bauds THROBX RTTY SITOR-AMTOR-NAVTEX FELD HELL PSK JT65 HELL HF FAX SSTV FILTERS

Audio Spectrum Analyser Spectrum Lab or Speclab started as a simple FFT program running under DOS a long time ago, but it is now a specialized audio analyzer, filter, frequency converter, hum filter, data logger and more. Can be used for MTHELL QRSS, DFCW, PSK, MSK, Castle. Spectrum Lab is a free audio analysis tool, lets you see the hidden world of sound. It analyzes live audio or recordings, showing you the exact frequencies present. Watch sounds change over time with a waterfall display. Need to clean up your audio? It can filter out noise in real-time. Even play with radio signals by decoding and creating special modes! While ideal for amateur radio enthusiasts, anyone can explore the science of sound for free.

DigiPan provides a panoramic display of the frequency spectrum in the form of an active dial scale extending the full width of the computer screen. DigiPan is the result of a joint effort between myself and Nick Fedoseev, UT2UZ, the author of MIXW32, and is intended to make PSK31 operation easier and more enjoyable for everyone. You can download digipan 2.0 for windows form here.

DXKeeper is a free application that logs QSOs, tracks award status, generates QSL cards & labels, addresses envelopes, uploads QSOs to eQSL.cc and LotW, and downloads progress info from eQSL.cc and LotW. It can reference the RAC, Hamcall, and QRZ callbooks as well as the QRZ.com web site to fill in data when logging, or to update already-logged QSOs. DXKeeper automatically interoperates with all members of the freeware DXLab Suite, including Commander (transceiver control and bandspread for Alinco, Elecraft, FlexRadio, Icom, Kachina, Kenwood, TenTec, Yaesu), DXView (world map, rotator control), WinWarbler (PSK, RTTY, CW, Phone) and SpotCollector (DX and WWV spots). It also interoperates with MMTTY, MMVARI, MMSSTV, MultiPSK, MixW, DX Atlas, and Ham Radio Deluxe.

PSK31 Deluxe is a PSK31 and PSK63 program for novices and power users. It has been replaced by Digital Master 780 and is now a legacy product. The last version of PSK31 Deluxe was shipped with the HRD 4.0 SP4 kit and is no more availabe and supported.

Digital Master 780 is a windows multi-mode program which uses Ham Radio Deluxe for radio control. It is part of HRD package and support PSK, QPSK, Contestia, CW, DominoEx, Hell, MFSK, MT63, OLIVIA, RTTY, RTTYM, THROB and SSTV. Free version was made available with HRD 5.

A digital mode decoding and terminal program that uses no terminal unit, terminal node controller, or multimode hardware. It does all its decoding using the sound card inside the computer, and it can interface with a radio using a COM port. Zakanaka is an extremely cost-effective way of operating PSK31 and RTTY

PC sound card interfacing for RTTY SSTV PSK31, collection of interface connections to choose from when having a desire to use the Soundboard

A free soundcard application supporting PSK31, PSK63, RTTY, CW, and Phone operation. It can decode all PSK QSOs within a 4 KHz segment, maintaining a sorted list of heard callsigns; it can simultaneously decode RTTY via soundcard and an external modem, generates CW directly or via WinKey, and includes a voice keyer. WinWarbler interoperates with the free Commander, DXKeeper, and SpotCollector for transceiver control, logging, and spotting.

Fldigi Freeware Digital multi mode program for Linux, Free-BSD, MacOS X and MS Windows . Support CW and several digital modes like PSK31, MFSK, RTTY, Olivia, WeFax, Hell and others and is a fully multi platform application

Program for amateur radio digital communications via a sound card. Supported modes are RTTY (Baudot code), ASCII (7 or 8 bits), PSK31 (BPSK and QPSK) and AMTOR-FEC (SITOR-B, NAVTEX). SELFEC SITOR decoding is possible also. No additional hardware required, need only a sound card. Optionally you can use simple circuit fo PTT-control. Can cooperate with RZ4AG AAlog logger.

The ultimate free CAT program for the Yaesu FT-817 include PSK31 Deluxe.

A complete overview of modern digital HF radio operating modes: PACTOR AMTOR GTOR CLOVER RTTY PSK31 HELLSCHREIBER PACKET MT63 MFSK16 THROB.

AALog is a comprehensive logger program designed for amateur radio station operators. QRZ,Buckmaster,Flying Horse lookup, CW/RTTY/PSK31 support, Digital voice processor. DXCC,WAZ,P75P,WAS,JCC,WAJA,WAIP,IOTA,Russia tracking. Many other useful features. eQSL.cc compatible. It look like your paper log and use all power your PC

Proposed frequencies for PSK31 QSO

Build a PSK-31 PC interface for the yaesu FT-817

Demonstrates the construction and on-air performance of the _NB6Zep_ antenna, a modified 20-meter Extended Double Zepp design optimized for multi-band operation from 40 through 10 meters. The resource covers basic design principles, including dimensions of 66 feet horizontal and 5 feet vertical elements, and specifies open ladder line or TV twin lead for the transmission line. It details material selection for low-cost wire antenna construction, such as 18 AWG wire for the legs and ceramic or plastic insulators, along with practical tips for soldering connections and insulating against moisture. The author, NB6Z, shares insights from extensive _EZNEC_ modeling to optimize the antenna's total length for a 40-meter half-wave dipole footprint and feed line length for direct tuner connection. The article presents field results, including successful _PSK31_ contacts from Oregon to the East Coast on 40 and 30 meters with 50 watts, even at a low height of 6 feet. It provides detailed performance characteristics for each band, noting the _NB6Zep_'s highest gain (over 3 dB) and sharp, medium-angle lobes on 20 meters, which yielded strong DX reports to locations like Korea, Japan, and Argentina. For 17 and 15 meters, it describes a butterfly-like pattern with broad lobes, while 12 and 10 meters exhibit narrow, directional lobes in an "X" configuration. The author also shares personal experiences operating successfully for over a decade in an antenna-restricted environment using the NB6Zep and other stealth wire antennas.

The PSK31 philosophy, tips and tricks, sound files, how to get started, sound card setup and tips.

AirLink Express is a user friendly digital mode software package for the Amateur Radio Operator. The software is compatible with Microsoft Windows XP and Microsoft Windows Vista. It offers PSK, MFSK and RTTY digital modes with logging and macro capabilities. If you have ever used the Digipan software you will be immediately familiar with Airlink Express. The user interface is almost identical by Alex Krist, KR1ST

Windows 95/98 based program to decode PSK31 mode by AE4JY, freeware

Description of PSK31, mailing list, frequency for QSO

Psk31 program for Linux, supports up to four simultaneous receive windows.

MMVARI is a multi-Mode SoundCard Ham (Amateur) Radio program for receiving and transmitting the RTTY-PSK-FSK-MFSK modes. The program was written to experiment with the efficiency of transmitting Japanese and East Asian languages (HL/BV/BY) using the VARICODE

Multimode suite, feature logging, Internet interface to CXCluster, Smart multi-mode controller software, contest, APRS, and PSK31 via Sound card. Free and Commercial version available.

Comprehensive contesting software for SSB, CW, RTTY and PSK. For Windows.

SSTV info for beginners also has links for other data modes psk31 etc and links of interest to radio amateurs

WinPSKse is a logical outgrowth of WinPSK as designed and written by AE4JY. The look and feel is intentionally similar, but some significant changes have been made, not the least of which is the ability toreceive two PSK31 signals simultaneously.

RTTY SSTV PSK31 MFSK MT63 PACKET APRS and more...

Freeware windows RTTY PSK31 software decoder that allow logging, award tracking and qsl printing. By SQ1FTB

Signal generator using the PC soundcard to output continuous tone, CW, SSTV, AO-40 telemetry, and PSK31 test signals with variable AWGN. The program will also output to a RIFF .wav file by AE4JY

These web receiver based in Kiew Ukraine show PSK31 activity on 20m band 14.070-14.074 MHz remotely by using a web browser. Requires java by the MixW team

Linux free multimode HF terminal program. Despite the name, gMFSK can send and receive many digital conversational modes typically used by radio amateurs on HF. Supported modes are: MFSK (MFSK16 and MFSK8) RTTY THROB (1, 2 and 4 throbs/sec) PSK31 (BPSK and QPSK) PSK63 MT63 Feldhell

Pc sound card interface for PSK31 MFSK Baudot for the yaesu FT-817

Yaesu FT-1000MP, FT-990 and FT-920 packet data port to pc sound card for psk 31 interface.

Database logbook for OM SWL BCL & CB with utility like DXCLuster DXtelnet PSK PSK-Pbbs (TNC or PC sound card) radio rotor CDbook interface and many other features. Free Update at homepage.

Article on PSK modes. PSK for Beginners Has RTTY's Replacement Arrived?

Looking for Hams that want to experiment on VHF/UHF PSK/digital modes

This is a resonant, half-wave, vertical antenna. It takes up little space in the back yard, was designed for operation on a single frequency 80 meter PSK net, and is reasonably inexpensive to construct by Chuck Hines, K6QKL

An introduction to PSK31, MT63, and Hellschreiber, John DeGood NU3E Trenton Computer Festival in PDF

The article "Exploring the World of 10 Meter Beacons" by Ken Reitz, KS4ZR, provides an in-depth look at 10-meter beacon operations, focusing on their utility for propagation analysis. It details FCC Rules part 97.203 governing beacon stations, including license requirements, power limits (under 100 watts), and the specified band segment of 28.200-28.300 MHz for U.S. operations. The content highlights the diversity in beacon construction, from converted CB radios to home-brew QRP transmitters, and discusses the robust operating conditions these 24/7 stations endure. The resource presents several case studies of active 10-meter beacon operators like Ron Anderson KA0PSE/B, Domenic Bianco KC9GNK/B, and Bill Hays WJ5O/B, detailing their equipment, antenna setups, and typical signal report volumes. It also introduces the NCDXF/IARU International Beacon Project, which features 18 synchronized beacons worldwide transmitting on 28.200 MHz at varying power levels (100W, 10W, 1W, 100mW) to facilitate propagation testing. The article also covers the PropNet Project utilizing PSK31 on 28.131 MHz and the 250 Synchronized Propagation Beacon Project on 28.250 MHz. Practical advice for monitoring includes using the RST reporting method, understanding the impact of the solar cycle on 10-meter propagation, and tips for setting up a personal beacon, such as frequency selection and power output considerations. The IY4M Guglielmo Marconi Memorial Beacon Robot on 28.195 MHz is also mentioned for its automatic QSO mode. The article concludes with a list of other resources for 10-meter beacon information.

CocoaModem is an opensource MacOSX application which implements modems (modulator-demodulators) for RTTY PSK MFSK Hellschreiber CW SITOR HF-FAX provided by W7AY

Presented here is a transceiver to computer sound card interface complete with automated transmit key function. A sound card interface is simply the audio coupling of a computer soundcard and a transceiver to allow various computer applications that send and receive SSTV, RTTY, PSK31 and other similar modes based on soundcard generated signals.

Easy to use Audio Spectrum and PSK31 decoding program specially designed for SWL's who don't need TX or for anyone who just like to monitor PSK31 or analyse signals. Adjustable DSP and Spectrum settings for audio and frequency spectrum to set for best decoding of PSK31.

ARRL W1AW Bulletins are spread via internet and on the airwaves, in a variety of modes SSB, FM voice, CW, RTTY, MFSK16, and PSK31. W1AW publishes general interest bullettins as well as propagation reports,satellite and dx news.

Stream is a software that implements MFSK16 and MFSK8 modes designed by me and Murray Greenman ZL1BPU. It also offers a series of experimental modes based on FEC, interleaving and several modulation techniques (PSK, QPSK, MSK).

Original PSK31 awards by the 070 Club

Simple PSK31 and RTTY program based on the AE4JY PSK engine. Logging inlcudes 10-10 and VP number. Exports to ADIF and CSV.

Easy to use Audio Spectrum- and PSK31 decoding program specially designed for SWL's who don't need TX or for anyone who just like to monitor PSK31 or analyse signals. Adjustable DSP and Spectrum settings for audio and frequency spectrum analasys or to set it for best decoding of PSK31 signals. By ON6MU