TX can be either:

• TX can mean "thanks" or "thank you" - commonly used in instant messaging
• the telegraph and CW abbreviation for transmit (see also RX)
• the USPS state code for Texas, and domain name as in houston.tx.us
• T-X (Terminatrix) is the name of the gynoid antagonist in the movie Terminator 3: Rise of the Machines
• The Tsukuba Express, the abbreviation of a railway line of the Metropolitan Intercity Railway Company in Japan
• TX (Tug eXperiment) is a fictional space launcher created by Yury Kulchitsky for Orbiter
• TV Tokyo - JOTX-TV, JOTX-DTV

• • Instant Messenging Acronym - Thanks

Tx "means transmit" is an obscure Detroit techno artist that has recorded an abundant string of electro classics.