HOW TO – Build a computer controlled radio transmitter

Simon @ Scitoys shows you how to build a computer controlled wireless transmitter – “How would you like to send text messages to your friends without wires, and without an Internet connection, and without paying monthly fees? In this project we will build a very simple radio transmitter that you attach to a serial port on your computer. The computer then runs a free program that converts words you type into radio signals that are decoded by another computer, using a cheap radio receiver, and a sound card. “ – Link.

Related:

• Video: Morse coders beating SMSers – Link.
• DIY Morse code Palm keyboard interface board – Link.
• Make Morse Code Music – Link.
• Simple Working Telegraph System – Link.
• — — .-. … . -… . .- – … … — … – Link.