Sometimes, it is useful to transmit a low-power radio signal to create a beacon, to send a signal carrier to a near receiver, to transmit in QRP or QRPP mode, and so on. The circuit shown here is very ...

Tuning in: interfering laser light could soon be used to generate terahertz signals. (Courtesy: iStock/arttanja) A new type of microwave radio transmitter built by physicists in the US could lead to ...

For the first time in history, a prototype radio has been created that is claimed to be completely digital, generating high-frequency radio waves purely through the use of integrated circuits and a ...

Cambridge Consultants are claiming the world’s first fully digital radio transmitter built only from computing power. There are no analog components like a high-speed D to A converter with amplifier, ...

We think of radio navigation and direction finding as something fairly modern. However, it might surprise you that direction finding is nearly as old as radio itself. In 1888, Heinrich Hertz noted ...

The 185-foot masts and flattop antenna dwarf the transmitter building at the “new” 1931 WHK transmitting plant. Ever since Marconi began playing with radio at his family villa, there have been many ...

On July 1, 2003 WTVJ commissioned its state of the art digital broadcast transmitter manufactured by Thomson Inc. (formally Thales Broadcasting). This transmitter is made up of 4 inductive output ...

IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. Black wrinkle finish; front: ...

WICHITA, Kan. (KSNW) – KSN is in the process of making improvements to our transmitter, to provide better coverage for our viewers. Our engineers are currently switching out our transmitter to upgrade ...

Fig. 1: This photo of KDKA’s first “broadcast center” offers some detail about the in-house manufactured 100-Watt transmitter used for the Nov. 2, 1920 broadcast. A six-volt lead-acid car battery ...

The radio transmitter at Cumnock in central west New South Wales once had a beautiful rose garden and while the perfumed blooms are gone, there is still plenty of greenery, including a citrus tree ...