Chuck Forsberg

Charles Alton "Chuck" Forsberg (May 6, 1944 – September 24, 2015[1]) developed two data transmission protocols popular in the 1990s, for uploading and downloading files from dial-up bulletin board systems.

Forsberg then wrote a version, Zmodem G, which was for use over "guaranteed error free" communications lines, such as Ethernet or short serial-to-serial computer connections.

Forsberg created the program YAM, which in traditional Unix nomenclature stood for Yet Another Modem after "Modem.asm", the original version of Xmodem released by Christensen in the CP/M User's group in 1977.

[3] Omen Technology published software tools such as ZComm (a terminal-based communications program that included the ZMODEM-90 file transfer protocol) and DSZ.

[3] Jesse Walker cited Forsberg as a participant in WMAS, a pirate radio station at Western Military Academy in Alton, Illinois.