Portal:Radio
Radio is the transmission of signals by modulation of electromagnetic waves with frequencies below those of visible light. Electromagnetic radiation travels by means of oscillating electromagnetic fields that pass through the air and the vacuum of space. Information is carried by systematically changing (modulating) some property of the radiated waves, such as amplitude, frequency, phase, or pulse width. When radio waves pass an electrical conductor, the oscillating fields induce an alternating current in the conductor. This can be detected and transformed into sound or other signals that carry information.
Radio apparatus
[edit]- The Oscillating Audion as it appeared in the January 1916 QST
- Apparatus Arrangement as it appeared in the February 1916 QST
- An Interview with the Inventor of the Crystaloi Detector as it appeared in the March 1916 QST
- Practical Pointers on the Audion as it appeared in the March 1916 QST
- Software-Defined Radio and Broadcasting (2009)
Radio stations
[edit]- Amateur Radio Stations as it appeared in the January 1916 QST
- American Radio Relay League Station 8ZI as it appeared in the March 1916 QST
- Ann Arbor, Michigan Radio Station as it appeared in the March 1916 QST
- One of the Special License Stations as it appeared in the March 1916 QST
- Ontario Radio Station as it appeared in the March 1916 QST
- Radio Station 9IK as it appeared in the March 1916 QST
- The Radio Station of Mr. P. W. Patch, Dubuque, Ia. as it appeared in the March 1916 QST
- A Well Equipped Station in York, PA as it appeared in the March 1916 QST