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Radio Waves
 
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What are Radio Waves and how do they work?
Views: 618794 TheOnLineEngineer
How Radio Waves Are Produced
 
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UNLOCKING THE MYSTERIES BEHIND RADIO WAVES. Electric current creates magnetic field, oscillating electric current creates oscillating magnetic field and not "electromagnetic wave" as current belief. Electron has a standing- electric field and magnetic field at right angle (watch video structure of electron). The flow of electrons in a conductor is essentially caused by the attraction between the electric fields of mobile electrons and "fixed" positive charges in the conductor. Oscillation of electrons in a conductor is caused by the alternation of electric polarity in the conductor. Because of electric field and magnetic field of an electron is at right angle, when oscillates the electric field of the electron will be parallel to the oscillation and magnetic field will be perpendicular to the oscillation.This oscillation of the electron creates transverse wave on its magnetic line and the oscillating magnetic line is radiated to space. http://www.amazon.com/author/atom http://www.facebook.com/novaphysica https://www.youtube.com/user/atommodel
Views: 747276 AtomModel
Electromagnetic Spectrum: Radio Waves
 
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http://www.facebook.com/ScienceReason ... [email protected]: EMS Electromagnetic Spectrum (Episode 2) - Radio Waves The electromagnetic spectrum is the range of all possible frequencies of electromagnetic radiation. The "electromagnetic spectrum" of an object is the characteristic distribution of electromagnetic radiation emitted or absorbed by that particular object. --- Please SUBSCRIBE to Science & Reason: • http://www.youtube.com/Best0fScience • http://www.youtube.com/ScienceTV • http://www.youtube.com/FFreeThinker --- MEASURING THE ELECTROMAGNETIC SPECTRUM The electromagnetic (EM) spectrum is just a name that scientists give a bunch of types of radiation when they want to talk about them as a group. Radiation is energy that travels and spreads out as it goes - visible light that comes from a lamp in your house and radio waves that come from a radio station are two types of electromagnetic radiation. Other examples of EM radiation are microwaves, infrared and ultraviolet light, X-rays and gamma-rays. Hotter, more energetic objects and events create higher energy radiation than cool objects. Only extremely hot objects or particles moving at very high velocities can create high-energy radiation like X-rays and gamma-rays. • http://imagine.gsfc.nasa.gov/docs/science/know_l1/emspectrum.html --- RADIO WAVES Radio waves are a type of electromagnetic radiation with wavelengths in the electromagnetic spectrum longer than infrared light. Like all other electromagnetic waves, they travel at the speed of light. Naturally-occurring radio waves are made by lightning, or by astronomical objects. Artificially-generated radio waves are used for fixed and mobile radio communication, broadcasting, radar and other navigation systems, satellite communication, computer networks and innumerable other applications. Different frequencies of radio waves have different propagation characteristics in the Earth's atmosphere; long waves may cover a part of the Earth very consistently, shorter waves can reflect off the ionosphere and travel around the world, and much shorter wavelengths bend or reflect very little and travel on a line of sight. Discovery and utilization: Radio waves were first predicted by mathematical work done in 1865 by James Clerk Maxwell. Maxwell noticed wavelike properties of light and similarities in electrical and magnetic observations. He then proposed equations, that described light waves and radio waves as waves of electromagnetism that travel in space. In 1887, Heinrich Hertz demonstrated the reality of Maxwell's electromagnetic waves by experimentally generating radio waves in his laboratory. Many inventions followed, making practical the use of radio waves to transfer information through space. Propagation: The study of electromagnetic phenomena such as reflection, refraction, polarization, diffraction and absorption is of critical importance in the study of how radio waves move in free space and over the surface of the Earth. Different frequencies experience different combinations of these phenomena in the Earth's atmosphere, making certain radio bands more useful for specific purposes than others. Radio communication: In order to receive radio signals, for instance from AM/FM radio stations, a radio antenna must be used. However, since the antenna will pick up thousands of radio signals at a time, a radio tuner is necessary to tune in to a particular frequency (or frequency range). This is typically done via a resonator (in its simplest form, a circuit with a capacitor and an inductor). The resonator is configured to resonate at a particular frequency (or frequency band), thus amplifying sine waves at that radio frequency, while ignoring other sine waves. Usually, either the inductor or the capacitor of the resonator is adjustable, allowing the user to change the frequency at which it resonates. In medicine: Radio frequency (RF) energy has been used in medical treatments for over 75 years generally for minimally invasive surgeries and coagulation, including the treatment of sleep apnea. • http://en.wikipedia.org/wiki/Radio_waves .
Views: 383409 Best0fScience
How Does Radio Transmission Work? | Iken Edu
 
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How Does Radio Transmission Work? | Iken Edu In this animation script we will learn about Radio. For more videos visit https://www.youtube.com/ikenedu Follow us on twitter https://twitter.com/ikenedu Like us on https://www.facebook.com/ikenconnect
Views: 32179 Iken Edu
AM and FM Radio As Fast As Possible
 
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AM & FM radio have been around since way before the digital age. How can radios decode AM & FM signals only using analog technology? Freshbooks message: Head over to http://freshbooks.com/techquickie and don’t forget to enter Tech Quickie in the “How Did You Hear About Us” section when signing up for your free trial. Follow: http://twitter.com/linustech Join the community: http://linustechtips.com
Views: 423726 Techquickie
Transmission Media (Part 2) Radio Waves, Micro Waves, Infrared Waves
 
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Transmission Media (Part 1) Twisted Pair Cable, coaxial cable, Fibre Optics Cable : https://www.youtube.com/watch?v=xHyJNkiGRd8&t= Keywords: --------------------------------------------------------------------------------------- Transmission Media (Part 2) Radio Waves, Micro Waves, Infrared Waves radio waves transmission micro waves transmission types of transmission media in hindi infrared waves wireless transmission media unbounded transmission media unguided transmission media transmission medium in hindi transmission medium in computer network transmission media in hindi wired and wireless communication wired transmission media guided and unguided transmission media in computer networks bounded and unbounded media communication media communication medium ----------------------------------------------------------------------------------------- Keywords
Views: 13561 STUDY Mafia
How Information Travels Wirelessly
 
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Understanding how we use electromagnetic waves to transmit information. License: Creative Commons BY-NC-SA More information at http://k12videos.mit.edu/terms-conditions
Views: 162231 MITK12Videos
Radio Basics: "Sending Radio Messages" 1943 ERPI Classroom Films
 
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Support this channel: https://www.patreon.com/jeffquitney Electronics playlist: https://www.youtube.com/playlist?list=PLAA9B0175C3E15B47 Radio Broadcasting & Old Time Radio playlist: https://www.youtube.com/playlist?list=PL18A480E27C4EDD07 Shortwave & Military Radio playlist: https://www.youtube.com/playlist?list=PLA4AC5A9478CECACC more at http://scitech.quickfound.net/ "Much great footage of radio equipment and animated radio waves also great footage of radio operators on land, sea and air." Originally a public domain film from the Library of Congress Prelinger Archives, slightly cropped to remove uneven edges, with the aspect ratio corrected, and one-pass brightness-contrast-color correction & mild video noise reduction applied. The soundtrack was also processed with volume normalization, noise reduction, clipping reduction, and/or equalization (the resulting sound, though not perfect, is far less noisy than the original). https://en.wikipedia.org/wiki/Radio Wikipedia license: http://creativecommons.org/licenses/by-sa/3.0/ Radio is the transmission of signals through free space by electromagnetic waves with frequencies significantly below visible light, in the radio frequency range, from about 3 kHz to 300 GHz. These waves are called radio waves. Electromagnetic radiation travels by means of oscillating electromagnetic fields that pass through the air and the vacuum of space. Information, such as sound, is carried by systematically changing (modulating) some property of the radiated waves, such as their amplitude, frequency, phase, or pulse width. When radio waves strike an electrical conductor, the oscillating fields induce an alternating current in the conductor. The information in the waves can be extracted and transformed back into its original form... Transmitter and modulation Each system contains a transmitter. This consists of a source of electrical energy, producing alternating current of a desired frequency of oscillation. The transmitter contains a system to modulate (change) some property of the energy produced to impress a signal on it. This modulation might be as simple as turning the energy on and off, or altering more subtle properties such as amplitude, frequency, phase, or combinations of these properties. The transmitter sends the modulated electrical energy to a tuned resonant antenna; this structure converts the rapidly changing alternating current into an electromagnetic wave that can move through free space (sometimes with a particular polarization). Amplitude modulation of a carrier wave works by varying the strength of the transmitted signal in proportion to the information being sent... It was the method used for the first audio radio transmissions, and remains in use today. "AM" is often used to refer to the mediumwave broadcast band (see AM radio). Frequency modulation varies the frequency of the carrier. The instantaneous frequency of the carrier is directly proportional to the instantaneous value of the input signal... FM is commonly used at VHF radio frequencies for high-fidelity broadcasts of music and speech (see FM broadcasting). Normal (analog) TV sound is also broadcast using FM... An antenna (or aerial) is an electrical device which converts electric currents into radio waves, and vice versa. It is usually used with a radio transmitter or radio receiver. In transmission, a radio transmitter applies an oscillating radio frequency electric current to the antenna's terminals, and the antenna radiates the energy from the current as electromagnetic waves (radio waves). In reception, an antenna intercepts some of the power of an electromagnetic wave in order to produce a tiny voltage at its terminals, that is applied to a receiver to be amplified. An antenna can be used for both transmitting and receiving... Once generated, electromagnetic waves travel through space either directly, or have their path altered by reflection, refraction or diffraction. The intensity of the waves diminishes due to geometric dispersion (the inverse-square law); some energy may also be absorbed... Electrical resonance of tuned circuits in radios allow individual stations to be selected. A resonant circuit will respond strongly to a particular frequency, and much less so to differing frequencies. This allows the radio receiver to discriminate between multiple signals differing in frequency... The electromagnetic wave is intercepted by a tuned receiving antenna; this structure captures some of the energy of the wave and returns it to the form of oscillating electrical currents. At the receiver, these currents are demodulated, which is conversion to a usable signal form by a detector sub-system. The receiver is "tuned" to respond preferentially to the desired signals, and reject undesired signals. Early radio systems relied entirely on the energy collected by an antenna to produce signals for the operator...
Views: 23816 Jeff Quitney
Portal 1: all radios and signals from Transmission Received
 
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The location of every single radio and signal, in a compact and handy video, to help you with the achievement. It starts counting at 0 instead of 1, sorry about that.
How Data is Transmited by RF circuits (Wifi, bluetooth, phone, radio etc...)
 
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SEE THE THEORY IN ACTION HERE: https://www.youtube.com/edit?o=U&video_id=gkc9xN9pZ4Y The video above explains the basic theory that relates to data transmission, namely how electromagnetic waves are generated by antennas and how they encode 1's and 0's. Non essential information for a hobbyist, but really interesting none the less. Component list: •1 X Arduino Uno •1 X 433MHz RF link pair •3 X LED •1 X Piezo Buzzer •1 X Push Button •1 X Resistor 330Ω •50cm Single Core Wire Equipment needed: Soldering Iron -~-~~-~~~-~~-~- Latest and Best Arduino Playlist in Collaboratio with DFRobot: https://www.youtube.com/playlist?list=PL_92WMXSLe_86NTWf0nchm-EmQIwccEye -~-~~-~~~-~~-~-
Views: 60593 Robotix
HOW RADIO WORKS - 1943
 
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The theory and operation of early radio
Views: 274525 TheShootingstar31
Transmission Lines - Signal Transmission and Reflection
 
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Visualization of the voltages and currents for electrical signals along a transmission line. My Patreon page is at https://www.patreon.com/EugeneK
Transmission of Radio waves Through Space
 
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Physics_p-9-10-ict-5.mp4
Views: 3533 Sabaq. Pk
FM Radio Electronics: "Frequency Modulation: Basic Principles" 1964 US Army Training Film TF11-3482
 
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Support this channel: https://www.patreon.com/jeffquitney more at http://scitech.quickfound.net "FREQUENCY MODULATION - PART I - BASIC PRINCIPLES: FUNDAMENTALS OF AM AND FM RADIO COMMUNICATION, HOW FM ELIMINATES PROBLEM OF ELECTRICAL INTERFERENCE, FUNCTIONING OF FM RADIO EXAMINED IN DETAIL." US Army Training Film TF11-3482 The 1944 film "Basic Principles of Frequency Modulation" is also excellent: https://www.youtube.com/watch?v=mu3ASt2kwFo Originally a public domain film from the US National Archives, slightly cropped to remove uneven edges, with the aspect ratio corrected, and one-pass brightness-contrast-color correction & mild video noise reduction applied. The soundtrack was also processed with volume normalization, noise reduction, clipping reduction, and/or equalization (the resulting sound, though not perfect, is far less noisy than the original). http://en.wikipedia.org/wiki/Frequency_modulation Wikipedia license: http://creativecommons.org/licenses/by-sa/3.0/ In telecommunications and signal processing, frequency modulation (FM) conveys information over a carrier wave by varying its instantaneous frequency. This contrasts with amplitude modulation, in which the amplitude of the carrier is varied while its frequency remains constant. In analog applications, the difference between the instantaneous and the base frequency of the carrier is directly proportional to the instantaneous value of the input-signal amplitude. Digital data can be sent by shifting the carrier's frequency among a range of settings, a technique known as frequency-shift keying. FSK (digital FM) is widely used in data and fax modems. Morse code transmission has been sent this way, and FASK was used in early telephone-line modems. Radioteletype also uses FSK. FM modulation is also used in telemetry, radar, seismic prospecting and newborn EEG seizure monitoring. Frequency modulation is known as phase modulation when the carrier phase modulation is the time integral of the FM signal. FM is widely used for broadcasting music and speech, two-way radio systems, magnetic tape-recording systems and some video-transmission systems. In radio systems, frequency modulation with sufficient bandwidth provides an advantage in cancelling naturally-occurring noise. Radio Edwin Howard Armstrong (1890--1954) was an American electrical engineer who invented wideband frequency modulation (FM) radio. He patented the regenerative circuit in 1914, the superheterodyne receiver in 1918 and the super-regenerative circuit in 1922. Armstrong presented his paper, "A Method of Reducing Disturbances in Radio Signaling by a System of Frequency Modulation", (which first described FM radio) before the New York section of the Institute of Radio Engineers on November 6, 1935. The paper was published in 1936. As the name implies, wideband FM (WFM) requires a wider signal bandwidth than amplitude modulation by an equivalent modulating signal; this also makes the signal more robust against noise and interference. Frequency modulation is also more robust against signal-amplitude-fading phenomena. As a result, FM was chosen as the modulation standard for high frequency, high fidelity radio transmission, hence the term "FM radio" (although for many years the BBC called it "VHF radio" because commercial FM broadcasting uses part of the VHF band—the FM broadcast band). FM receivers employ a special detector for FM signals and exhibit a phenomenon known as the capture effect, in which the tuner "captures" the stronger of two stations on the same frequency while rejecting the other (compare this with a similar situation on an AM receiver, where both stations can be heard simultaneously)... An FM signal can also be used to carry a stereo signal; this is done with multiplexing and demultiplexing before and after the FM process. The FM modulation and demodulation process is identical in stereo and monaural processes. A high-efficiency radio-frequency switching amplifier can be used to transmit FM signals (and other constant-amplitude signals)... Normal (analog) TV sound is also broadcast using FM...
Views: 55441 Jeff Quitney
7078 Khz Strange Radio Signals
 
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Strange radio signals received on 7.078 Mhz on LSB. Can anyone identify this signal?
Views: 3973 Edmk2009
Radio Frequency Transmission Full Tutorial
 
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DOWNLOAD CODE HERE FREE: http://robotix.com.au/#/videos/94 LIBRARY LINK HERE: http://www.resistorpark.com/arduino-virtualwire-library-download/ Learn more about this tutorial here: https://www.instructables.com/id/433-MHz-RF-Links-Theory-Circuit-and-Program/ he video above explains the basic theory that relates to data transmission, namely how electromagnetic waves are generated by antennas and how they encode 1's and 0's. Non essential information for a hobbyist, but really interesting none the less. Component list: •1 X Arduino Uno •1 X 433MHz RF link pair •3 X LED •1 X Piezo Buzzer •1 X Push Button •1 X Resistor 330Ω •50cm Single Core Wire Equipment needed: Soldering Iron Observe the schematic and the completed circuit (video tutorial also available) Make sure you do ALL of the following: 1. Connect the module in the following manner Vcc pin connects to Arduino 5V GND to Arduino GND and DATA to Arduino Pin 12 2.The button connects to Arduino pin 2 and needs to be earthed 3. The antenna needs to be soldered onto the module. The antenna is 35cm long and soldered into an antenna slot in the transmitter module. 4. The antenna is to be straight if possible. Watch the video from time: 00:40 to see the circuit built from scratch -~-~~-~~~-~~-~- Latest and Best Arduino Playlist in Collaboratio with DFRobot: https://www.youtube.com/playlist?list=PL_92WMXSLe_86NTWf0nchm-EmQIwccEye -~-~~-~~~-~~-~-
Views: 55175 Robotix
The Alien Wow Signal, 72 sec, at 1420.4556 MHz, New View! Aug 1977, UFO Sighting News.
 
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Lets crack this alien signal! The Wow! signal was a strong narrowband radio signal detected by Jerry R. Ehman on August 15, 1977, while he was working on a SETI project at the Big Ear radio telescope of The Ohio State University, then located at Ohio Wesleyan University's Perkins Observatory in Delaware, Ohio.[1] The signal bore the expected hallmarks of non-terrestrial and non-Solar System origin. It lasted for the full 72-second window that Big Ear was able to observe it, but has not been detected again.
Views: 1307332 Scott Waring
Portal Update 3/1/2010 (transmission received) DECODED
 
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portal project "ARG" details http://half-life.wikia.com/wiki/Portal_ARG more info done by pros... here http://kotaku.com/5484157/valves-portal-puzzle-so-far-the-files-recovered-from-aperture-science tools used: MixW (sstv) http://www.dxzone.com/cgi-bin/dir/jump2.cgi?ID=3165 CwGet (morse) http://www.dxzone.com/cgi-bin/dir/jump2.cgi?ID=1297 this might work good for sstv aswell http://users.belgacom.net/hamradio/rxsstv.htm the radios emit morse code, and slow scan television (SSTV) frequencies, creating text and images sent by the Borealis which is the ship that's going to be in half life 2 episode 3
Views: 222358 Quadstrike
10th Class Physics, Ch 17, Transmission of Radiowaves Through Space - Class 10th Physics
 
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In this online lecture, Ms Vaneeza Abbas explains 10th class Physics Chapter 17 Information and Communication Technology.The topic being discussed is Topic 17.5 Transmission of Radiowaves Through Space. punjab text book board/Sindh text book board/KPK text book board Matric Part 2 book 2 lecture is conducted in Urdu/hindi/English. This lecture for 10th class Physics chapter 17 is created for all students who want to prepare this topic in detail. For more videos of Vaneeza Abbas visit https://www.ilmkidunya.com/study/10th-class-physics/information-and-communication-technology.aspx If you have any questions about this lecture on 10th Class Physics ch 17, you can go to https://www.instutor.com/10th-class/physics/information-and-communication-technology
Views: 5165 ilmkidunya
Mysterious radio signals from deep space detected - 2019
 
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Mysterious radio signals - detected mysterious radio signals from the depths of the earth. 2019 - Submission: mysterious radio signals have been detected coming from outside our galaxy michio kaku - mysterious radio signal from space. Il y a 1 heure - Proof of LIFE: Scientists record mysterious radio signals from deep space Radio telescope sounds · radio telescope homemade · radio telescope images · radio telescope documentary · radio telescope how it works · radio telescope diy radio signals detected in space approaching our direction... Scientists Are Still Perplexed By Source Of Mysterious Radio Waves From Space Stream Mysterious Radio Signals From Space by 98online from desktop or your mobile device If You Like What We Do And You Should Be Sure To LIKE & Subscribe. It Keeps Us From Having To Turn Tricks On Hollywood Boulevard Follow Us On Twitter : https://twitter.com/VidaLocaYT #Mysterious #Radio ----------------- SUPPORT OUR CHANNEL ----------------- Help #VidaLoca Make More Fresh Quality Content. Every Contribution Is Helpful, Big Or Small ------------------------------------------------------------------------
Views: 39530 Vida Loca
PROPAGATION OF ELECTROMAGNETIC WAVES PART 01
 
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For more information: http://www.7activestudio.com [email protected] http://www.7activemedical.com/ [email protected] http://www.sciencetuts.com/ [email protected] Contact: +91- 9700061777, +91- 9100061777 7 Active Technology Solutions Pvt.Ltd. is an educational 3D digital content provider for K-12. We also customise the content as per your requirement for companies platform providers colleges etc . 7 Active driving force "The Joy of Happy Learning" -- is what makes difference from other digital content providers. We consider Student needs, Lecturer needs and College needs in designing the 3D & 2D Animated Video Lectures. We are carrying a huge 3D Digital Library ready to use. PROPAGATION OF ELECTROMAGNETIC WAVES:In communication using radio waves, an antenna at the transmitter radiates the Electromagnetic waves EM waves, which travel through the space and reach the receiving antenna at the other end. As the EM wave travels away from the transmitter, the strength of the wave keeps on decreasing. Several factors influence the propagation of EM waves and the path they follow. At this point, it is also important to understand the composition of the earth’s atmosphere as it plays a vital role in the propagation of EM waves. A brief discussion on some useful layers of the atmosphere is given in Table. Ground wave: To radiate signals with high efficiency, the antennas should have a size comparable to the wavelength of the signal at least /4. At longer wavelengths i.e., at lower frequencies, the antennas have large physical size and they are located on or very near to the ground. In standard AM broadcast, ground based vertical towers are generally used as transmitting antennas. For such antennas, ground has a strong influence on the propagation of the signal. The mode of propagation is called surface wave propagation and the wave glides over the surface of the earth. A wave induces current in the ground over which it passes and it is attenuated as a result of absorption of energy by the earth. The attenuation of surface waves increases very rapidly with increase in frequency. The maximum range of coverage depends on the transmitted power and frequency less than a few MHz. Sky waves:In the frequency range from a few MHz up to 30 to 40 MHz, long distance communication can be achieved by ionospheric reflection of radio waves back towards the earth. This mode of propagation is called sky wave propagation and is used by short wave broadcast services. The ionosphere is so called because of the presence of a large number of ions or charged particles. It extends from a height of ~65 Km to about 400 Km above the earth’s surface. Ionisation occurs due to the absorption of the ultraviolet and other high-energy radiation coming from the sun by air molecules. The ionosphere is further subdivided into several layers, the details of which are given in Table. The degree of ionisation varies with the height. The density of atmosphere decreases with height. At great heights the solar radiation is intense but there are few molecules to be ionised. Close to the earth, even though the molecular concentration is very high, the radiation intensity is low so that the ionisation is again low. However, at some intermediate heights, there occurs a peak of ionisation density. The ionospheric layer acts as a reflector for a certain range of frequencies 3 to 30 MHz.Electromagnetic waves of frequencies higher than 30 MHz penetrate the ionosphere and escape. These phenomena are shown in the Figure. The phenomenon of bending of EM waves so that they are diverted towards the earth is similar to total internal reflection in optics.
Views: 201761 7activestudio
How Radio  broadcast works
 
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How Radio broadcast works
Views: 31781 Daniel Izzo
How to build a FM radio transmitter
 
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Circuit & Component layout: 0:33 in the video Feel free to leave a comment if you have any questions or concerns. Music by: e-soundtrax Parts list: -Transistor 2N3904 -Trimmer capacitor 2-22pF -Electrolytic capacitors 2X 47uF -Ceramic capacitors 3X 1nF 10pF 33pF -Resistors 22k 39k 47k 100R -Wires -Copper wire (~0.5mm diameter) -Prototype board -Antenna (anything you like) -Audio plug -9V Battery clip -9V Battery Tools: -Soldering iron -Solder -Pocket knife -Cutting pliers -Mini pliers -Bolt (~5mm diameter) -Ruler -Lighter -Candle wax -Electrical tape The best and most productive way to gather the parts for this project is to take apart and salvage old and or broken electronics appliances. This may take some technical skill. The safest bet is to purchase a fresh set of parts and tools (if you don't have them) Here are a couple online web-stores which sell the parts and tools needed for this project: http://www.amazon.com/ - amazon has all the parts and tools needed for this project. However, amazon tends to sell electronics parts in large bulks which means you are likely to pay for parts needed to build around 100 of these transmitters. http://www.conrad.com/ce/ - One of the greatest electronics web- stores in western Europe. You can cheaply buy individual parts needed for this project. http://www.lemona.lv/index.php?lan=en&toc= - One of the best electronics web-stores in eastern Europe. You can buy the parts needed for this project at very low prices. https://www.radioshack.com/ - One of the most popular electronics web stores which ship worldwide and sell all of the components at low prices.
Views: 763694 Lukas Ekers
Radio Wave and Communication in URDU Hindi
 
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Adeel Explains generation and transmission of Radio Waves.
Views: 15709 Takhti Online
Transmit Radio Signals w/ Raspberry Pi (1/2) - Software Defined Radio Series #24
 
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In this video I show how to transmit radio signals with a Raspberry Pi! This video includes the complete steps from the beginning, where we format and reinstall the operating system (Raspbian), enable SSH access, upload audio files, install the necessary programs, and how to use them. NOTE: The Raspberry Pi produces a lot of harmonics, which is generally very bad in terms of RF tranmissions, as "duplicates" of the original signal will be seen at Frequency*2, Frequency*3, Frequency*4, etc. Hardware: - Raspberry Pi v3 Model B - Transmitter - Terratec E4000 RTL-SDR (RTL2832U) - Receiver Topics covered: - Formatting SD Cards Properly - Installing Raspbian - Enabling SSH (Now disabled by default since 30th November 2016!) -- https://www.raspberrypi.org/blog/a-security-update-for-raspbian-pixel/ - Uploading Files With FileZilla - Installing PiFmRds - Basic PiFmRds Usage Tools: - SD Formatter v4 https://www.sdcard.org/downloads/formatter_4/index.html - FileZilla https://filezilla-project.org/ - PiFmRds https://github.com/ChristopheJacquet/PiFmRds - SDR# (sdrsharp, http://airspy.com/download/ & https://github.com/jmichelp/sdrsharp-bladerf) - RPi TX https://github.com/F5OEO/rpitx -- https://github.com/F5OEO/rpitx/issues/21 -- https://github.com/F5OEO/rpitx/issues/25 Stay tuned and subscribe for more upcoming videos showing actual hacks! Many thanks to Adafruit for linking to this video! (https://blog.adafruit.com/2017/02/10/transmit-radio-signals-w-raspberry-pi/) Many thanks to the RTL-SDR.com Blog for featuring this video! ( http://www.rtl-sdr.com/video-tutorial-transmitting-signals-raspberry-pi/ ) Twitter: @CrazyDaneHacker Facebook: https://www.facebook.com/crazydanishhacker Patreon: https://www.patreon.com/crazydanishhacker
Views: 10141 Crazy Danish Hacker
Radio Signal of 'Black Knight Satellite' Transmission sent from Space?
 
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The following audio was played on Ground Zero with Clyde Lewis. It is a transmission signal that purports to be from the Black Knight Satellite. Of course there is no substantial proof for this claim but only theories. Let me know your theories and even your wildest theories to this purported signal in the description below. or if it is just simply a HOAX... ------------------------------------------------- HERE IS THE LINK TO THE RADIO SHOW. skip to 1 hour and 35 mins to here the signal he plays. -https://soundcloud.com/groundzeromedia/lords-of-the-air-w-chase-kloetzke-january-27-2017 ------------------------------------------------- DISCLAIMER]: Truth Perception Media does not necessarily agree or disagree with the information in the video. There is no scientific proof to the claims in this video. This video is for informational purposes for the audience to make their own conclusions about information within the video. This video was created and is presented with an open mind and does not prove anything. I leave the questions to the viewers to contemplate the claims within the video. Royalty Free License from audioblocks.com https://www.audioblocks.com All images remain copyright of their respective owners.
5 Strangest Radio Stations & Most Mysterious Transmissions
 
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From an unexplained Russian radio station playing strange sounds, to the infamous Yosemite Sam broadcast... Here are five eerie radio stations and transmissions from around the world! ____________________________________________________________________ Don't forget to follow TOP5s on Social Media to keep up with upcoming videos, articles and new information! ►► https://twitter.com/TheTop5s ►►https://www.facebook.com/TheOfficialTop5s/ Special Thank you to CO.AG for the music as usual! If you are looking for music for any video production, games, movies etc. He is the man to speak to so check out his channel or send him a personal message! https://www.youtube.com/channel/UCcavSftXHgxLBWwLDm_bNvA Thanks for watching! Top5s
Views: 835982 Top5s
Wave, Modulation, AM, FM Basics
 
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In this lecture, we use an Analog Arts (http://analogarts.com/) SL987 oscilloscope to review the basics of waves, antennas, modulation concept, AM, and FM. Waves transfer energy without moving matter, similar to ocean waves or sun light. In general in air, electromagnetic waves such as radio signals travel longer than mechanical waves such as sound. To transmit information over very long distances, electromagnetic waves are used. Electromagnetic waves or EM waves spread without the need for a medium, travel at the speed of light, do not lose energy in vacuum, and can travel forever. Using a signal frequency of about 850 kHz, in December 1901, Guglielmo Marconi received the first transatlantic radio signals, the Morse code for the letter "S". An antenna converts an electrical signal to EM waves to make it transmittable. The length of the antenna inversely depends on the frequency of the signal. For low frequency signals such as electrical representation of sound out of a microphone, the size of the antenna grows to hundreds of kilometers, making the transmission impractical. Modulation overcomes this problem by mixing the low frequency information with a high frequency sinusoidal. In the modulation process, a low frequency information signal is put on a higher frequency sine wave, to produce a new waveform, which is suitable for transmission. The information is referred to as the modulating signal, the sine wave as the carrier signal, and the mix as the modulated carrier wave. Modulation process can be viewed as a ride carrying cargo from one place to another, where the cargo is the message and the ride is the carrier signal. At the destination, the detected signal is mixed with the carrier, and the resulting signal is filtered to produce the message. This process is called demodulation. AM and FM are two of the most popular modulation techniques. In AM the amplitude of the modulated signal represents the message. In FM however, the frequency of the modulated signal characterizes the message. Modulation concept is the process of varying one or more properties of a high frequency periodic waveform, referred to as the carrier signal, with an information signal, to transmit the information. It is like throwing a paper note across a distance by wrapping it around a stone. Since a sine wave is completely defined by its amplitude, frequency, and phase, in a modulation process, one or a combination of these properties is altered by the modulation signal. Once a low frequency wave is modulated, it travels longer and requires smaller transmission antennas. Modulation also allows multiple transmissions, each with its own unique carrier frequency. Each modulation technique offers its own benefits and is intended for a particular application. Both AM and FM techniques are widely used. Since lower frequencies are reflected better by the electrically charged atoms in the ionosphere, AM waves are spread in a wider area, particularly at night when the ionosphere is not affected by sun. An important advantage of FM is that it is not disturbed by outside interferences. Therefore, FM results in a higher quality transmission. The advent of digital signal processing, gave birth to digital modulation. Conceptually it is like analog modulation. However, it uses a discrete signal to modulate the carrier signal. Please join us.
Views: 3421 Academia
physics class 10 transmission of radio waves through space
 
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physics class 10 lecture 4 chapter 17
Views: 42 Syed Osama
Why AM Radio Signals Propogate Farther At Night Than During the Day
 
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→Subscribe for new videos every day! https://www.youtube.com/user/TodayIFoundOut?sub_confirmation=1 →How "Dick" came to be short for 'Richard': https://youtu.be/BH1NAwwKtcg?list=PLR0XuDegDqP2Acy6g9Ta7hzC0Rr3RDS6q Never run out of things to say at the water cooler with TodayIFoundOut! Brand new videos 7 days a week! More from TodayIFoundOut In this video: In this video, we're looking at why it is that some radio signals, like am radio, propagate much farther at night than during the day, allowing you to potentially pick up an am radio station sometimes even thousands of miles away from the broadcast source. Want the text version?: http://www.todayifoundout.com/index.php/2015/01/radio-signals-travel-night-day/ Sources: http://electronics.howstuffworks.com/radio4.htm http://electronics.howstuffworks.com/question1.htm http://en.wikipedia.org/wiki/Ionosphere http://en.wikipedia.org/wiki/AM_broadcasting http://www.fcc.gov/encyclopedia/why-am-radio-stations-must-reduce-power-change-operations-or-cease-broadcasting-night http://usatoday30.usatoday.com/news/science/wonderquest/2002-01-23-radio-waves.htm http://illumin.usc.edu/114/catch-a-wave-radio-waves-and-how-they-work/ http://www.cybercollege.com/frtv/frtv017.htm http://en.wikipedia.org/wiki/Skywave http://commons.wikimedia.org/wiki/File:Skywave_Effect_of_AM.png http://missionscience.nasa.gov/ems/03_behaviors.html Image Credit: https://commons.wikimedia.org/wiki/File:Skywave_Effect_of_AM.png http://apollo.lsc.vsc.edu/classes/met130/notes/chapter1/ion2.html http://radiojove.gsfc.nasa.gov/education/educ/radio/tran-rec/exerc/iono.htm https://en.wikipedia.org/wiki/File:Skywave.jpg https://commons.wikimedia.org/wiki/File:Amfm3-en-de.gif
Views: 16400 Today I Found Out
How to Make AM Radio Transmitter
 
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How to make an AM radio transmitter for use with a crystal radio or a normal AM radio. This simple circuit uses an oscillator chip and a transformer to take input from a sound source and turn it into radio waves, transmitted using an antenna. I test it with a CD player as the sound source but it may also work with an iPod or iPhone, though it may need some amplification for that. WARNING: Do not transmit more than 1 or 2 meters/yards otherwise you'll interfere with other radios. In many countries it is illegal to transmit without a license. For how to make the homemade crystal radio, watch "How to Make/Build a Crystal Radio": http://youtu.be/VqdcU9ULAlA For how to make the crystal earpiece watch "Make Crystal Earphone/Earpiece for Crystal Radio - Homemade": http://youtu.be/OVapqz4yBCY For how to make a lifter or ionocraft, watch "How to Make a Lifter": http://youtu.be/vzZy1Aqleno My webpage about how to make a simple AM radio transmitter: http://rimstar.org/science_electronics_projects/make_simple_am_radio_transmitter.htm Where to get a 1 megahertz oscillator chip and an audio transformer: https://www.scitoyscatalog.com/category/R.html Follow behind-the-scenes on: Twitter https://twitter.com/#!/RimStarz Google+ https://plus.google.com/116395125136223897621 http://rimstar.org Music used for background: The Path of the Goblin King Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100873
Views: 260916 RimstarOrg
Radio - broadcasting and reception - Science
 
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This is a science video for Grade 10 students that explains radio broadcasting and reception. RADIO BROADCASTING AND RECEPTION Using the basic principles of radio and TV communication, radio communication is achieved through various stages which are explained as follows: a) PRODUCTION OF SOUND AND MODULATED WAVE: In a studio the song rendered by a person is converted into electrical signals using a microphone. These signals are in the audio frequency (AF) range. An oscillator circuit produces suitable rf carrier wave. b) RADIO TRANSMITTER: The audio signal and r f waves are combined in the modulator or transmitter. The modulated waves are fed to an antenna fixed on a tower. The transmitting antenna broadcasts the modulated rf waves into space. c) RADIO RECEIVER: The aerial of a radio receiver receives the modulated waves from different transmitting stations. The tuning circuit selects only desired signals. The detector cirxcuits extracts or demodulate the af signal which is fed to an amplifier. The amplified electrical signals are fed to a speaker and converted into music or speech.
Views: 13352 Elearnin
New Repeating Fast Radio Bursts Detected From Deep Space Featuring Shriharsh Tendulkar
 
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An exploration of the new group of Fast Radio Bursts or FRBs with Shriharsh Tendulkar of the CHIME team, including only the second repeating FRB ever found located at a distance of 1.5 billion light years. Also discussed are the potential uses for FRBs in exploring and mapping the universe and the potential for many more to be found in the coming years, with some estimates predicting that up to a thousand happen per day. "A second source of repeating fast radio bursts", M. Amiri et al, 2019.: https://www.nature.com/articles/s41586-018-0864-x Swarm of mysterious radio bursts seen coming from deep space: https://www.nationalgeographic.com/science/2019/01/swarm-of-mysterious-radio-bursts-seen-coming-from-deep-space/ Mysterious radio signals from deep space detected: https://www.bbc.com/news/science-environment-46811618 Are Fast Radio Bursts Signs of Intelligent Life? Featuring Dr. Avi Loeb: https://youtu.be/x-spgxnyIto Website: https://www.eventhorizonshow.com/ You can now support us on Patreon! https://www.patreon.com/EventHorizonShow Follow us on Twitter! https://twitter.com/jmgeventhorizon Follow us on Instagram! https://www.instagram.com/jmgeventhorizon/ MUSIC Kai Engel: https://kaiengel.bandcamp.com/ Stellardrone: https://stellardrone.bandcamp.com/ Cylinder Eight by Chris Zabriskie is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) Source: http://chriszabriskie.com/cylinders/ Artist: http://chriszabriskie.com/
Views: 75028 Event Horizon
HackRF One Radio Signal Transmission
 
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HackRF One radio signal transmission tutorial created by research interns at The Senator Patrick Leahy Center for Digital Investigation in Burlington, VT
Views: 1745 ChampForensics
Physics 10th Unit-17 Lecture-5 Transmission of Radio Waves Through Space
 
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Lecture: Transmission of Radio Waves Through Space Topics Covered: Fax Machine Cell Phone Photo phone Chapter 17 Information and Communication Technology Language: Urdu/Hindi Blog - http://schools.akblogs.com/ Facebook Page - http://fb.me/aks316 Project of http://www.akblogs.com/ Book: Physics 10th Punjab Text Book Board, Sindh Text Book Board, Khyber Pakhtunkhwa Text Book Board, Federal Government Text Book Board Ali Khan Schools - Educational Consultant is an educational blog where we share videos for students of Matric (9th and 10th) and F.Sc Pre-engineering (Part I and II) class for preparations of their Board examinations. We are providing these video lectures free of cost which will not only save your tuition fee but also help you preventing from buying reference book. So just follow our channel on Youtube: https://www.youtube.com/user/MuhammadAli316N/ Ali Khan Schools Educational Consultant and Tutor
How Does An Antenna Work? | weBoost
 
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*** It is with sadness that we share that Don, the person featured in this video, passed away in December 2017. Don was a Navy veteran and a valued member of our product engineering team since 2004. He will be greatly missed. Have you ever asked: How does an antenna work anyway? If you have, then you will want to watch this 4-minute video. We ask a guy who designs and tests antennas, Don with weBoost, how antennas work. In the video he explains how an antenna works and why. So whether you're just curious and want an answer to 'how do antennas work.' Or if you want a little background before shopping for the best antenna for your needs, this short video explanation by Don the Antenna Engineer is a good place to start. To learn more about signal boosters visit: https://www.weboost.com/us/ Subscribe to our channel to be in the know when we release our weekly videos. Including Tips, how-to and more. Read more on our blog: https://www.weboost.com/us/news/blog/how-does-an-antenna-work/
Views: 578629 weBoost
How Radio Signals Are Transmitted And Received?
 
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Transmitter and receiver antennas are often very similar in design 26 may 2017 radio means sending energy with waves. Wikipedia wiki radio_receiver url? Q webcache. Note antennas are used both to transmit or and 'radio waves' music, conversations, pictures data invisibly through the air, often over millions of miles it happens every day in thousands 11 aug 2010. Amplification the power of radio waves picked up by a receiving antenna decreases with square its distance from transmitting. Electromagnetic waves the radio & tv umd physics. In transmission, a radio transmitter supplies an electric current oscillating at frequency (i. This can be done in many ways using microwaves or radio waves through the earth's before a sound piece of information is transmitted, it encoded 5 dec 2013 transmitting modulated rf carrier (radio frequency) are amplified and sent to antenna that sends 28 may 2015 just how data received across wireless networks? The network infrastructure needed transmit. Radio waves transmission of radio microphone, current modulating a sound wave carrier, signal challenge transmit and receive openlearn open unit 6? Transmitting receiving devices arrlcommotion wireless. Googleusercontent search. In other words, it's a method of transmitting electrical energy from one place to another without using these waves that are propagated carry signals received by antennae on your radio or television set. A microphone is a device for converting sound energy into if dozen stations all transmitted sounds by the mechanism described above, your radio then decodes signal it has received subtracting carrier 18 sep 2006 science behind transmitting and receiving signals, part of bbc ou's programme website rough 2 heart station transmitter. 3) when the waves arrive at the receiver antenna, they make electrons vibrate inside it. How do antennas and transmitters work? Explain that stuffhow it works radio wave basicshow waves are produced youtube. Electromagnetic radiation is transmitted in waves or particles at different coil transmitter were picked up by the receiving antenna, sparks would jump its gap as well radio wave transmission there are two principal ways which electromagnetic (radio) energy travels from a transmitting antenna to fluctuations called 'radio waves' electric charges sloshing down how generated, and received ? . High frequency ac) to the antenna's terminals, and antenna radiates energy from current as electromagnetic waves (radio waves) 5 mar 2017 2) radio travel through air at speed of light. The process of sending and receiving radio signals through wireless networks involves two devices, the transmitter receiver 6 apr 2015 waves are a type electromagnetic radiation. This produces an electric current that recreates the original signal. Even with it is usually used a radio transmitter or receiver. Block radio waves scientific american. It is a device that will transmit radio signals out over the air. Radio wikipediaradio wikipedia. These
Views: 1450 Aile Aile
Astronomers detect a strange radio signal from deep space (Crave Extra)
 
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Watch more of Crave: http://bit.ly/2a3pIQW Russian astronomers intercepted a faint radio signal from a faraway solar system last year but failed to alert the SETI project. SETI says it's now investigating the signal's source. Subscribe to CNET: http://bit.ly/17qqqCs Watch more CNET videos: http://www.cnet.com/video Follow CNET on Twitter: http://twitter.com/CNET Follow CNET on Facebook: http://www.facebook.com/cnet Follow CNET on Instagram: https://www.instagram.com/cnet/
Views: 69039 CNET
GCSE Physics Revision: Communication with waves
 
03:55
GCSE Physics Revision: Communication with waves You can watch all my videos at www.freesciencelessons.co.uk In this video, we look at how we use waves for communication. We explore how radio waves can be used for radio signals and for terrestrial TV. We then explore how microwaves can be used for mobile telephones and satellite TV and finally we take a look at infra-red and visible light.
Views: 53494 Freesciencelessons
Using a PC sound card to receive VLF radio signals
 
13:25
Just connect an antenna to your computer's microphone input, and you can receive VLF (Very Low Frequency) radio signals! A sound card (or built-in sound chip) with a recording sampling rate of at least 96 kHz is recommended. Example of using this method to receive VLF signals from Russia and Europe: http://www.youtube.com/watch?v=fKSOoZ2vhvo SDR Sharp software (for Windows) to receive and record VLF (and many other) radio signals: http://sdrsharp.com/#download Similar SDR (Software Defined Radio) applications are available for Linux and Mac OS. Lists of VLF stations: http://sidstation.loudet.org/stations-list-en.xhtml http://www.smeter.net/stations/vlf-stations.php Common sources of radio interference and recommended solutions: http://www.ccrane.com/!wcjHVrOwu6BDBDjo39xwNw!/AM-Antennas About the accidental recording of VLF station GBR (16 kHz) contained on Mike Oldfield's "Tubular Bells" album: http://alancordwell.co.uk/personal/index.php http://gkircher.stormloader.com/vlfcd/ http://en.wikipedia.org/wiki/Rugby_Radio_Station
Views: 84326 VWestlife
Canada's New CHIME radio telescope picks up mysterious radio signals from deep space
 
02:50
#CHIME #radiotelescope #FRB #FRB180725A #FRBs #magnetars, A new radio telescope in Canada is doing its job picking up mysterious signals from deep space known as "fast radio bursts" (FRBs). The Canadian Hydrogen Intensity Mapping Experiment (CHIME) in British Columbia detected the first-ever FRB at frequencies below 700 MHz on July 25, a signal named FRB 180725A. **Learn More** Alien signals detected six new radio burst received from deep space: https://youtu.be/azSvSHd1JnI Fast radio bursts Signals Picked Up, What are these insanely powerful signals from space?:https://youtu.be/CHkhdDpcIyM Nwo Report: http://www.nworeport.me Twitter: https://twitter.com/NwoReport Facebook: https://www.facebook.com/Nwo-Report-1505570316361450/
Views: 16306 Qronos16
Repeating radio signals coming from space (CNET News)
 
01:31
Read the CNET News article - http://cnet.co/2wlYnnE Sign of life? Scientists discover an intriguing fast radio burst in a distant galaxy. Subscribe to CNET: http://cnet.co/2heRhep Check out our playlists: http://cnet.co/2g8kcf4 Like us on Facebook: https://www.facebook.com/cnet Follow us on Twitter: https://www.twitter.com/cnet Follow us on Instagram: http://bit.ly/2icCYYm Add us on Snapchat: http://cnet.co/2h4uoK3
Views: 48000 CNET
Shortwave Radio Oddity Roundup
 
14:30
Various recordings of shortwave radio oddities, numbers and noise stations. These mysterious broadcasts are found on shortwave bands and they are - or appear to be - with no definite purpose. These signals are said to actively haunt the airwaves after World War II at beginning of the Cold War. With the collapse of the Soviet Union many expect these stations to disappear overtime but radio monitors indicate these signals continue to exist with new ones surfacing every now and then along with stations that have operated for decades. So what are they? There are many speculations what these numbers stations are; theories point to covert government-sponsored broadcasts for spies abroad, illegal activities such as drug trafficking, for various scientific research and undisclosed military operations. However, to this day, no organization, broadcaster or country ever admitted the use of these stations. Video is made up of three parts: 1) Extinct or inactive stations 2) Rarity stations, special broadcasts or tests 3) Regular or active stations Yosemite Sam incident http://www.brogers.dsl.pipex.com/yosemite.html Buzzer, Pip and Squeeky Wheel http://www.astrosol.ch/53790397a40a2bb01/5379039f1a0a31204/index.html UVB-76/Buzzer http://www.brogers.dsl.pipex.com/page5.html http://deepthought.newsvine.com/_news/2010/06/06/4471630-uvb-76-the-buzzer-soviet-era-clandestine-transmitter http://www.youtube.com/watch?v=bqkE25mS0ZM More info, frequencies and schedules http://www.numbersoddities.nl/ http://www.brogers.dsl.pipex.com/page3.html http://priyom.org/ http://www.numbers-stations.com/node/4 http://www.apul64.dsl.pipex.com/enigma2000/
Views: 315198 Jonny
strange radio signals - what is this?
 
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27.400.00 MHz scanning around 10m and 11m i came across this.. does anyone know what it could be? it sounds like some kind of telemetry but its a strange place for it to be.
Views: 7400 JohnDragonMan
5 Terrifying Radio Broadcasts
 
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Radio is one of the biggest forms of media in the world. With this, there is defiantly a disturbing side to it. These are the ones that I could find. While you're down here, why don't you check out some more videos. If you like creepy stuff, this is the channel for you! Spongebob Bootleg Episode Creepypasta https://www.youtube.com/watch?v=H5t1J... 5 Scariest Clown Sightings https://www.youtube.com/watch?v=24lkV... 5 Most Disturbing Youtube Channels https://www.youtube.com/watch?v=nbkAv... Well, you've made it this far, so why don't you go ahead and subscribe. I have a new "Top 5 Scariest" video or a Creepypasta uploaded every week! Subscribe! https://www.youtube.com/channel/UCTBF... Music by Myuuji 5 89.9 WKCR is a radio station out of New York. This audio was uploaded by an anonymous youtube user. The recording starts with music, but it turns into a jumble of sounds, screaming and a female voice chanting numbers and names. It isn't known if the radio was hijacked, if this was a prank, or if this is a hoax all together. 4 A Russian radio station played a buzzing sound for over 4 decades. This sound is constant, but every few months or so, there is a voice relaying a coded message. No one knows the exact purpose of the message or even the station. All we can do is just assume its purpose. 3 Montana residents were warned of an emergency in 2013. The warning stated that the dead was rising from their graves, and were attacking the living. It also warned residents not to apprehend or approach them as they were considered dangerous. Similar events were reported in Michigan and New Mexico. Of course, this wasn't real. Instead a hacker found a back door into their emergency notification systems. 2 Vladimir Komerov is possibly the first person to go to space. Unfortunately, he never came back alive. He was the pilot of Russia's Soyuz 1. There were well over 200 documented problems with the spacecraft. Komarov knew this, but he still agreed to pilot Soyuz 1. Why would he do such a thing? Turns out he was protecting his backup, because he knew if he turned down the job, his backup would be the one to die. He was launched into space on April 23, 1967. While returning to Earth's atmosphere, the spacecraft failed to protect him from the tremendous heat. While returning to earth, he is heard cursing those who put him in that position. 1 During a discussion about Area 51, the radio host, Art, received a call from a man claiming to be a former employee of area 51. He was let go on a medical discharge, and he has been all over the country for an unknown reason. He explains briefly what goes on at area 51 to Art. His communication is suddenly cut off, and the radio broadcast ends as well. When they go back on the air, Art explains that they were unexplained disconnected, and that they were on a backup system.
Views: 18905 Nightmare Fives
Sputnik 1 Satellite-1 Radio Signal
 
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Radio signal of the first earth satellite Sputnik 1 (USSR) The radio transmitter "Sputnik-1" (radio station D-200) radiated radio waves at two frequencies: 20,005 and 40,002 MHz, alternately (the sending of the signal by one transmitter corresponded to the pause of the other, the switching was performed by an electromechanical relay with a period of several tenths of a second).
Views: 6808 Sunrise Rec
Top 10 Scary SIGNALS From Space
 
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Top 10 Scary SIGNALS From Space. There are many weird and strange recordings from space that even experts can't explain what these sounds are. Listen carefully as we give you the Top 10 Scary SIGNALS From Space. NEW CHANNEL: TOP 10 GAMING http://bit.ly/2qX05Jq MORE VIDEOS YOU MIGHT LIKE AS WELL: Top 10 Things Found In Outer Space: http://bit.ly/2ux2lXY Top 10 Strangest Space Discoveries: http://bit.ly/2cgHBL4 Top 10 Incredible Moments in Space: http://bit.ly/2bYy78d Top 10 Things That Can Destroy Earth : http://bit.ly/2c4Cpwb SUBSCRIBE TO MOSTAMAZINGTOP10- https://www.youtube.com/channel/UCBINYCmwE29fBXCpUI8DgTA FOLLOW US ON SOCIAL MEDIA Facebook Fan Page- https://www.facebook.com/MostAmazingTop10Videos/ Instagram- https://www.instagram.com/_burkishdelight_/ CHANNEL PRODUCER: Landon Dowlatsingh- https://www.instagram.com/landonproductions/ VIDEO EDITED BY: Tamara Comas PRODUCED BY: Liam Collens POST PRODUCTION: Sasha Wood
Views: 6660032 MostAmazingTop10
What Was The Wow Signal? The Most Interesting Signal SETI Has Ever Seen
 
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What was the signal received in 1977? Was it a cryptic message from an alien civilization? Support us at: http://www.patreon.com/universetoday More stories at: http://www.universetoday.com/ Follow us on Twitter: @universetoday Follow us on Tumblr: http://universetoday.tumblr.com/ Like us on Facebook: https://www.facebook.com/universetoday Google+ - https://plus.google.com/+universetoday/ Instagram - http://instagram.com/universetoday Team: Fraser Cain - @fcain Jason Harmer - @jasoncharmer Susie Murph - @susiemmurph Brian Koberlein - @briankoberlein Chad Weber - [email protected] Kevin Gill - @kevinmgill Created by: Fraser Cain and Jason Harmer Edited by: Chad Weber Music: Left Spine Down - “X-Ray” https://www.youtube.com/watch?v=4tcoZNrSveE&feature=youtu.be In 1977, radio astronomer Jerry Ehman was looking through observation data from the Big Ear Radio Telescope. He was searching for evidence that alien civilizations might be trying to communicate using radio waves as an alternative to metal probes. Specifically, that aliens would be communicating in a portion of the radio spectrum that mimics hydrogen. The search generated an immeasurable mountain of remarkably boring data, nothing but the background radio transmissions of the Universe. But then he saw a data signal so interesting and unique that he circled it and wrote “WOW” in a red pen. A red pen! There was an exclamation point! Only one, though, don’t get too excited. Ehman circled the characters “6EQUJ5”, distinguishing them from all the other 1s and 2s on the field of data. What does this code mean? Is it a cryptic message from an alien civilization? Why does it start with a 6 and then end with a 5? What are they trying to tell us? From the moment Ehman red-penned in WOW, this has been known as the WOW Signal, and it’s been the cause of much speculation by SETI researchers and aliens fans and confusion for World of Warcraft players around the globe. For starters, it’s important to understand that the Big Ear Radio Observatory didn’t actually receive these characters in a message. The Observatory was listening to radio signals coming from a region of the sky in the Constellation Sagittarius, near the M55 globular cluster. Each character on this chart corresponds to about 10 seconds of “listening”. If the telescope picked up a signal, it recorded the intensity with a single character. The scale went from 1 to 9, and then through A to Z. The highest ever recorded was U. So, when you look at this chart, what you’re actually seeing is mostly no radio signal, and then the signal gets brighter and brighter, as the Big Ear’s dish passed whatever was generating the signal, then it gets dim again. When astronomers tried to follow up, the signal was gone. It happened just this one time, and then not anything else like it, not from this region, or any other region in the the sky. Hurry up Fraser! Was it aliens? I have to know. I need to put it on the blog l moderate for my favourite death metal conspiracy band “Tinfoil Hate”. Dr. Ehman, and other astronomers searched that region more than 50 times, trying to detect any signal. Nothing. They used the Big Ear again, and then the Oak Ridge Observatory, and even the vastly more powerful Very Large Array. Ehman himself was doubtful it was intelligent in nature. He wasn’t even sure it came from outside the Solar System at all. He suspected it was either a classified military satellite or a reflection of an Earth-based radio signal bouncing off space debris. But that doesn’t really explain it very well, does it Scully? If it was a satellite transmitting in this spectrum, you would expect to see it get picked up in other locations around Earth and at other times. It’s never been seen again. It makes sense that aliens would communicate in this spectrum; it’s what we’d do if we wanted to send an unambiguous message out into space. The signal is a point source, which means it would have come from a specific star or planet in the Milky Way. The bottom line is that we’ll never know. There just isn’t any more data to help us understand this mystery any more deeply. I’m a huge fan of searching for signals from extraterrestrial civilizations, and tantalizing mysteries like this means we should keep looking. Whether or not we discover new alien friends, or unusual new natural sources of radio emissions, the search is worth doing. One last thing.
Views: 89174 Fraser Cain
Where is your Antenna? Transmitters, Receivers, Radio, TV
 
06:54
Namaskaar Dosto, is video mein maine aapko Antennas ke baare mein baat ki hai, aap sabhi ne tareh tareh ke antennas dekhe honge, yeh Transmitters ho sakte hai Receivers ho sakte hai, aur Transreceivers bhi ho sakte hai, aise mein TV tower ho ya Mobile Tower, Cellphone ho ya Radio sabhi mein aapko Antennas dekhne ko milte hai. Maine aapko bataya hai ki alag alag types ke antennas kaise hote hai aur inke piche ki science kya hai? Mujhe umeed hai ki aapko antennas ke baare mein yeh video pasand aayegi. Share, Support, Subscribe!!! Subscribe: http://bit.ly/1Wfsvt4 Youtube: http://www.youtube.com/c/TechnicalGuruji Twitter: http://www.twitter.com/technicalguruji Facebook: http://www.facebook.com/technicalguruji Instagram: http://instagram.com/technicalguruji Google Plus: https://plus.google.com/+TechnicalGuruji About : Technical Guruji is a YouTube Channel, where you will find technological videos in Hindi, New Video is Posted Everyday :)
Views: 136862 Technical Guruji

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