MSHV is a amateur radio software using the following modes

• MSK For meteor scatter. Message frame duration is 72 ms and with Sh option 20 ms. Character transmission rate for standard messages is as high as 250 cps.
• JTMS For meteor scatter. Character transmission rate 197 cps.
• FSK441 For meteor scatter. Character transmission rate 147 cps.
• FSK315 For meteor scatter. Character transmission rate 105 cps.
• ISCAT Optimized for meteor and ionospheric scatter at 6 meters. Character transmission rate 16.15 or 32.3 cps.
• JT6M Optimized for meteor and ionospheric scatter at 6 meters. Character transmission rate 14.4 cps.
• FT4 Designed for HF contesting.
• FT8 Designed for fast tropospheric QSOs.
• JT65 VHF/UHF For EME and troposcatter.
• Q65 For ionospheric scatter, tropospheric scatter, rain scatter, TEP, and EME.
• PI4 PharusIgnis4 A digital modulation (MGM) for beacon purposes.

Developed by LZ2HV - Christo
Tested by SP9HWY - Jurek and G0LFF - Dick
Ideas about appearance OZ2M - Bo
Linux binaries OZ1PIF - Peter, SK
Linux and ARM binaries G8JVM - Richard
Russian interface R5WM - Vladimir, SK
Russian interface RU4NG - Igor
Translations:
Chinese Simplified and Traditional, VR2UPU - SZE-TO Wing
Spanish and Catalan, EA3KE - Toni Olmo
Portuguese, CU3AK - Jaime Eloy
Romanian, YO3JW - Pit Stefan Fenyo
Danish, 5P1KZX - Michael
Polish, SP5QWB - Bartek
French, ON6DP - Paul
Brazilian Portuguese, PP7CJ - Crezivando Junior
Norwegian, LA3QMA - Kai Gunter Brandt
Italian, IW4ARD - Gianni Matteini

Acknowledgements to K1JT Joe Taylor and WSJT Development Group.
The algorithms, source code, look-and-feel of WSJT-X and related programs, and protocol specifications for the modes FSK441, FT8, JT4, JT6M, JT9, JT65, JTMS, QRA64, ISCAT, MSK144, are Copyright © 2001-2017 by one or more of the following authors: Joseph Taylor, K1JT; Bill Somerville, G4WJS; Steven Franke, K9AN; Nico Palermo, IV3NWV; Greg Beam, KI7MT; Michael Black, W9MDB; Edson Pereira, PY2SDR; Philip Karn, KA9Q; and other members of the WSJT Development Group.