Taking a break from his book, "How to Gain Enemies and Encourage Hostility," [FPS Weapons] shows us how to build our own handheld EMP generator which can be used to generate immediate dislike from a...

Become Very Unpopular Very Fast With This DIY EMP Generator

Taking a break from his book, "How to Gain Enemies and Encourage Hostility," [FPS Weapons] shows us how to build our own handheld EMP generator which can be used to generate immediate dislike from a...

Hertz's first radio transmitter: a dipole resonator consisting of a pair of one meter copper wires ending in 30 cm zinc spheres.[14] When an induction coil applied a high voltage between the two sides, sparks across the center spark gap created standing waves of radio frequency current in the wires, which radiated radio waves. The frequency of the waves was roughly 50 MHz, about that used in modern television transmitters.

Hertz's first radio transmitter: a dipole resonator consisting of a pair of one meter copper wires ending in 30 cm zinc spheres.[14] When an induction coil applied a high voltage between the two sides, sparks across the center spark gap created standing waves of radio frequency current in the wires, which radiated radio waves. The frequency of the waves was roughly 50 MHz, about that used in modern television transmitters.

Spark gap radio transmitter in American Museum of Radio & Electricity in Bellingham, Washington, USA. The placard reads: "Spark-gap transmitter. Radiguet & Massiot, French c. 1900. Small spark transmitter used for ship to shore communication. Range was about 10 km."

Spark gap radio transmitter in American Museum of Radio & Electricity in Bellingham, Washington, USA. The placard reads: "Spark-gap transmitter. Radiguet & Massiot, French c. 1900. Small spark transmitter used for ship to shore communication. Range was about 10 km."

Radiohax Spark gap transmitters are the oldest type of radio transmitter made by man. They were first used around 1888 and remained legal until the 1920s when their use became greatly restricted. W…

Radiohax Spark gap transmitters are the oldest type of radio transmitter made by man. They were first used around 1888 and remained legal until the 1920s when their use became greatly restricted. W…

Low-Voltage Tesla Coil Uses a Relay Instead of a Spark Gap

Low-Voltage Tesla Coil Uses a Relay Instead of a Spark Gap

[Teodor] writes in with a unique Tesla coil he designed and built. Unlike most Tesla coils, [Teodor]'s design is able to run with a fairly low input voltage because it doesn't use a static spark gap l...

The First Radio Sets: a Spark Gap and a Coherer | Hackaday

The First Radio Sets: a Spark Gap and a Coherer

Pinterest
Search