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Radio Waves
 
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What are Radio Waves and how do they work?
Views: 568715 TheOnLineEngineer
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: 371170 Best0fScience
How to increase radio signal/frequency - akash fun
 
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Easy way to enjoy your favourite radio channel.
Views: 9070 Akash Fun
The lowest frequency humanmade radio signals, I can receive
 
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This is the first station that I`m able to receive on the airwaves. Under this VLF frequency I can listen only the noise from natural sources. I do not know what is this, but I think that it will be BEACONs for submarines, or anything like this.
Views: 1966 Carlos Mourato
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: 768376 Top5s
Strange Radio Signals On High Frequencies
 
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Program: SDR# Reciever: RTL2832U
Views: 252 Fede Facchetti
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: 400790 Techquickie
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: 52779 Jeff Quitney
#83: Basics of RF Mixers in Radio Receivers / Mixer Tutorial / Frequency Conversion
 
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This video describes the basic properties of RF mixers, in the context of using them for frequency conversion/translation such in the application of a radio receiver. The input and output signals are shown on the oscilloscope, and the spectrum of the output is also shown, illustrating the various frequency components that are produced by the mixing process. The concept of IF filtering in a receiver is also illustrated. The video does not go into the design of mixers, the different types of mixers, or how to select a mixer for a given application. The notes for this video can be found here: http://www.dorkage.com/youtube/RFmixersheterodyne.pdf
Views: 82692 w2aew
#58: How to zero-beat WWV to check or adjust a Frequency Counter's accuracy
 
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This video shows how to zero-beat the WWV signal as a tool to adjust the frequency reference of an old frequency counter. It demonstrates the concept of zero-beat'ing a test signal against the WWV carrier. Since the WWV carrier is likely more accurate than any other frequency reference that most hobbiests and hams have in their labs, this is a useful technique. It can be used to check or adjust the 10MHz reference in the counter, if it has one, or can be used to very precisely set the output frequency of a signal generator which can then be used as a test signal for the frequency counter. Similar techniques can be used to adjust the frequency accuracy of a ham radio's reference. Several years ago, I wrote up a procedure that I put on my website. If can be found here: http://www.qsl.net/w2aew/adjustrig.htm
Views: 37887 w2aew
What is INTERMEDIATE FREQUENCY? What does INTERMEDIATE FREQUENCY mean?
 
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What is INTERMEDIATE FREQUENCY? What does INTERMEDIATE FREQUENCY mean? INTERMEDIATE FREQUENCY meaning - INTERMEDIATE FREQUENCY definition - INTERMEDIATE FREQUENCY explanation. Source: Wikipedia.org article, adapted under https://creativecommons.org/licenses/by-sa/3.0/ license. In communications and electronic engineering, an intermediate frequency (IF) is a frequency to which a carrier wave is shifted as an intermediate step in transmission or reception. The intermediate frequency is created by mixing the carrier signal with a local oscillator signal in a process called heterodyning, resulting in a signal at the difference or beat frequency. Intermediate frequencies are used in superheterodyne radio receivers, in which an incoming signal is shifted to an IF for amplification before final detection is done. Conversion to an intermediate frequency is useful for several reasons. When several stages of filters are used, they can all be set to a fixed frequency, which makes them easier to build and to tune. Lower frequency transistors generally have higher gains so fewer stages are required. It's easier to make sharply selective filters at lower fixed frequencies. There may be several such stages of intermediate frequency in a superheterodyne receiver; two or three stages are called double (alternatively, dual) or triple conversion, respectively. Intermediate frequencies are used for three general reasons. At very high (gigahertz) frequencies, signal processing circuitry performs poorly. Active devices such as transistors cannot deliver much amplification (gain). Ordinary circuits using capacitors and inductors must be replaced with cumbersome high frequency techniques such as striplines and waveguides. So a high frequency signal is converted to a lower IF for more convenient processing. For example, in satellite dishes, the microwave downlink signal received by the dish is converted to a much lower IF at the dish, to allow a relatively inexpensive coaxial cable to carry the signal to the receiver inside the building. Bringing the signal in at the original microwave frequency would require an expensive waveguide. A second reason, in receivers that can be tuned to different frequencies, is to convert the various different frequencies of the stations to a common frequency for processing. It is difficult to build multistage amplifiers, filters, and detectors that can have all stages track in tuning different frequencies, but it is comparatively easy to build tunable oscillators. Superheterodyne receivers tune in different frequencies by adjusting the frequency of the local oscillator on the input stage, and all processing after that is done at the same fixed frequency, the IF. Without using an IF, all the complicated filters and detectors in a radio or television would have to be tuned in unison each time the frequency was changed, as was necessary in the early tuned radio frequency receivers. A more important advantage is that it gives the receiver a constant bandwidth over its tuning range. The bandwidth of a filter is proportional to its center frequency. In receivers like the TRF in which the filtering is done at the incoming RF frequency, as the receiver is tuned to higher frequencies its bandwidth increases. The main reason for using an intermediate frequency is to improve frequency selectivity. In communication circuits, a very common task is to separate out or extract signals or components of a signal that are close together in frequency. This is called filtering. Some examples are, picking up a radio station among several that are close in frequency, or extracting the chrominance subcarrier from a TV signal. With all known filtering techniques the filter's bandwidth increases proportionately with the frequency. So a narrower bandwidth and more selectivity can be achieved by converting the signal to a lower IF and performing the filtering at that frequency. FM and television broadcasting with their narrow channel widths, as well as more modern telecommunications services such as cell phones and cable television, would be impossible without using frequency conversion.
Views: 7496 The Audiopedia
What is RADIO FREQUENCY? What does RADIO FREQUENCY mean? RADIO FREQUENCY meaning & explanation
 
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What is RADIO FREQUENCY? What does RADIO FREQUENCY mean? RADIO FREQUENCY meaning - RADIO FREQUENCY definition - RADIO FREQUENCY explanation. Source: Wikipedia.org article, adapted under https://creativecommons.org/licenses/by-sa/3.0/ license. Radio frequency (RF) is any of the electromagnetic wave frequencies that lie in the range extending from around 3 kHz to 300 GHz, which include those frequencies used for communications or radar signals. RF usually refers to electrical rather than mechanical oscillations. However, mechanical RF systems do exist (see mechanical filter and RF MEMS). Although radio frequency is a rate of oscillation, the term "radio frequency" or its abbreviation "RF" are used as a synonym for radio – i.e., to describe the use of wireless communication, as opposed to communication via electric wires. Electric currents that oscillate at radio frequencies have special properties not shared by direct current or alternating current of lower frequencies. The energy in an RF current can radiate off a conductor into space as electromagnetic waves (radio waves); this is the basis of radio technology. RF current does not penetrate deeply into electrical conductors but tends to flow along their surfaces; this is known as the skin effect. RF currents applied to the body often do not cause the painful sensation of electric shock as do lower frequency currents. This is because the current changes direction too quickly to trigger depolarization of nerve membranes. However they can cause superficial but serious burns called RF burns. RF current can easily ionize air, creating a conductive path through it. This property is exploited by "high frequency" units used in electric arc welding, which use currents at higher frequencies than power distribution uses. Another property is the ability to appear to flow through paths that contain insulating material, like the dielectric insulator of a capacitor. This is because capacitive reactance in a circuit decreases with frequency. In contrast, RF current can be blocked by a coil of wire, or even a single turn or bend in a wire. This is because the inductive reactance of a circuit increases with frequency. When conducted by an ordinary electric cable, RF current has a tendency to reflect from discontinuities in the cable such as connectors and travel back down the cable toward the source, causing a condition called standing waves. Therefore, RF current must be carried by specialized types of cable called transmission line. To receive radio signals an 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 into 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 form a tuned circuit. The resonator amplifies oscillations within a particular frequency band, while reducing oscillations at other frequencies outside the band. Another method to isolate a particular radio frequency is by oversampling (which gets a wide range of frequencies) and picking out the frequencies of interest, as done in software defined radio. The distance over which radio communications is useful depends significantly on things other than wavelength, such as transmitter power, receiver quality, type, size, and height of antenna, mode of transmission, noise, and interfering signals. Ground waves, tropospheric scatter and skywaves can all achieve greater ranges than line-of-sight propagation. The study of radio propagation allows estimates of useful range to be made. Radio frequency (RF) energy, in the form of radiating waves or electrical currents, has been used in medical treatments for over 75 years, generally for minimally invasive surgeries using radiofrequency ablation including the treatment of sleep apnea. Magnetic resonance imaging (MRI) uses radio frequency waves to generate images of the human body.
Views: 14494 The Audiopedia
WW2 Zombies Shadowed Throne: Easiest Way To Set Up Radio Frequency
 
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WW2 Zombies Shadowed Throne: Easiest Way To Set Up Radio Frequency Hope you enjoy our content, please feel free to like, comment, and subscribe if you want to see more of our content!! Twitter: https://twitter.com/BustersSkull Playlist: A Way Out Platinum Walkthrough: https://www.youtube.com/playlist?list=PLmRtRvETYZ61WUcTmZU2IAbgSTet-5hhA A Way Out Platinum Trophy Guide: https://www.youtube.com/playlist?list=PLmRtRvETYZ61IsBLOjQaDvVWmDBbcnPjr
Views: 21933 Skull Busters
12Antennas All Bands All frequency cell phone Jammer RF Jammer
 
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More details please contact: [email protected] CDMA800 GSM900 GSM1800 GSM1900 3G GPS RF LOJACK WIFI2.4G UHF VHF 4GLTE 4GWIMAX You can select 12 of above frequency bands you need in a jammer Total output power: 30W Jamming range: up to 50-70m, the jamming radius still depends on the strength signal in given area External Omni-directional antennas all the TX frequency covered down link only Power supply :50-60Hz 100-240V AC Full set weight:5KG Dimension: 330*238*60mm Advantages: 1:Good cooling system with cooling fan inside 2.Can adjust or turn off any signal band without influencing the other bands operation 3.Work non-stopped 4.Stable capability 5.Could be used in car directly,With car charger. Application Area: 1.It can be applied at meeting rooms, conference rooms,museums,galleries,theaters,concert halls,churches,temples,restaurants,classrooms,training centers,factories,trains,bus etc. 2.For some locations of special purpose such as hospitals,gas stations and more,Please do field test first to make sure no interference happened to the normal operation of their equipment and instrument.
Views: 64462 gasiajammer02
Adjusting the Frequency of Your Mind
 
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.... The frequency of the mind is there, my mind, your mind, and our mind, there are three minds right there in the universe, my mind, your mind, and our mind, and then there is a master mind, it all is a part of that huge mind and if your mind does not tap into the master mind I mind, my mind, your mind, our mind will always be in a conflict, there will be no understanding. You have to have a mind which should take overall picture, overall view and science will find it out in couple of thousand years from now that even the atom, proton and neutron whatever you call them three parts has also multi parts to it. So, it comes to a point where in your little psyche a combination of existence happens. There is nothing which you cannot do, take it for granted and everything which comes in your way has come in your way to get it done, that is granted. It is a question of whether your frequency adjust to itself or not, there is a radio and waves are going through on different number 105, 107, different stations and different line, there is no problem with the radio station, radio station is giving the signals and radios are receiving the signals. If the receptive radio is not tuned in to the same frequency that of the signal radio, signal station, you will not hear and sometime even though you are at the right angle you will see the buzz, it is buzz of your life which is your pain, your pain is not you, pain is not your environments, pain is not your richness and poverty, pain is not your faculty of life, pain is not your ego, pain is not your appreciation or your depreciation, pain is not your insult and your prays, pain is that buzz in your life and that buzz is when the frequency is not harmoniously received or projected, you know what that means, you get insecure. Wherever there is a I, you substitute thou you will get out of pain in seconds because thou means infinity, thou mean in vastness, thou means in grace, thou means is a greatness, wherever there is I you have to explain yourself the very fact of yourself.
Basic VHF and UHF Fundamentals
 
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Basic VHF and UHF Fundamentals Antennas are a very important component of communication systems. By definition, an antenna is a device used to transform an RF signal, traveling on a conductor, into an electromagnetic wave in free space. Antennas demonstrate a property known as reciprocity, which means that an antenna will maintain the same characteristics regardless if it is transmitting or receiving. Most antennas are resonant devices, which operate efficiently over a relatively narrow frequency band. An antenna must be tuned to the same frequency band of the radio system to which it is connected, otherwise the reception and the transmission will be impaired. When a signal is fed into an antenna, the antenna will emit radiation distributed in space in a certain way. A graphical representation of the relative distribution of the radiated power in space is called a radiation pattern.
Views: 174837 Dan Vanevenhoven
Radio Frequency (RF) Jamming
 
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http://www.sesp.com/MilitaryConvoyProtection.asp SESP offers two versions of its "ready-to-drive" JAMX military convoy protection jamming system: one is delivered, fully installed, in a Hummer H2 and one in a military shelter. Whether in military or civilian applications, protecting troop and VIP convoys from the threat of roadside bombs, or radio-controlled improvised explosive devices (RCIEDs), has become a very high priority and a tactical challenge. SESP is proud to provide the world's number one bomb jammers, supplied in specially customized vehicles. These systems provide the ultimate protection of convoys from the threat of radio-controlled road-side bombs.
Views: 26263 BombJammers
Listen To Almost All Radio Frequencies for $20 | RTL SDR Dongle
 
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I've changed my recommendation! THIS is the better cheap SDR! https://amzn.to/2LfXt1g https://www.patreon.com/hoshnasi If you'd like to help out my channel, just shop on Amazon. www.amazon.com/shop/hoshnasi Don't see what you need, just search for it through the search bar. The PLAYLIST! https://www.youtube.com/watch?v=4zD5pEwnDpo&list=PL1KAjn5rGhiwhJ3STRfiClLvBZc5PgdD4 https://www.youtube.com/user/hoshnasi SnapChat.................►@Hoshnasi Facebook.................► https://www.facebook.com/Hoshnasi Twitter......................►https://twitter.com/Hoshnasi Instagram.................►https://instagram.com/hoshnasi Beme........................►@Hoshnasi Google+....................►google.com/+hoshnasi aStore: http://astore.amazon.com/hb040-20/ Want 10% off Peak Design products, check out my link! COUPON CODE: Hoshnasi https://www.peakdesign.com/?acc=36 Music by: Sonic D: Soundcloud.com/sncd Twitter.com/sncd Facebook.com/djsonicd Kloak: Facebook.com/kloakmusic Jeff Devoe: Soundcloud.com/devoe Mixcloud.com/mr_devoe Twitter.com/mr_devoe Facebook.com/devoela NoCopyrightSounds: https://soundcloud.com/nocopyrightsounds Amazing Amarante Music: http://www.amarantemusic.com/ -------------------------------------------------------------------------- Camera: Canon G7x: http://amzn.to/1flIS39 DJI Phantom 4: http://amzn.to/2b42c6S Editing: Final Cut Pro X -------------------------------------------------------------------------- Music wanted!! Send me a message on any of the above if you have some deep cuts you want me to use! Mail: P.O Box 5101 Cerritos, Ca. 90703-5101. (If your send me something PLEASE include a name or something you want me to give a shoutout to!) Thanks!
Views: 244986 hoshnasi
Radio Transmission using the HP 8656A Frequency Generator
 
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Testing the Modulation capabilities of the Hewlett Packard 8656A Frequency Generator.
Views: 3661 DrCassette
Hunting for Radio Frequency Interference
 
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RF interference could be causing your dropped calls. Engineers from P3 hunt down the source and shut it off: Every day, Kevin Argentieri tracks down devices that are causing radio-frequency interference, and then tries to persuade their owners to shut them off. Argentieri works for P3, a company that performs radio-frequency interference hunting for nationwide carriers including Verizon, AT&T, T-Mobile, and Sprint. American carriers pay big bucks to the U.S. Federal Communications Commission for exclusive licenses to swaths of the radio-frequency spectrum. But rogue devices are out there, and it’s Argentieri’s job to find them. He says baby monitors, cordless phones, and cell phone repeaters are three of the most common violators. Read more: https://spectrum.ieee.org/video/telecom/wireless/radio-frequency-hunters-saving-your-cell-signal
Views: 7864 IEEE Spectrum
Radio Frequency in Hindi - अब हिंदी मे
 
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today i am going to explain you what is radio frequency and how it works and how to measure this RF Signal. more in formation and more tutorials available please visit this links https://www.saishtech.com https://www.facebook.com/saishtech https://www.linkedin.com/in/deepak-raut-9841ab43/ https://twitter.com/saishtech https://plus.google.com/u/0/+hitshortfilms -~-~~-~~~-~~-~- Download Desktop and Laptop drivers for HP, Lenovo, Dell, Sony, Asus, Acer etc. http://saishtech.com/ Download HP, Lenovo, Dell, Sony, Asus, Acer Laptop Motherboard Schematics http://saishtech.com/schematics/ Download Laptop & Desktop Bios http://saishtech.com/ Download HP, Canon, Epson, Brother, Ricoh, Samsung, Xerox Printer Drivers & Reseters http://saishtech.com/ Watch Laptop Repair Videos and Laptop Repair Course in Hindi Follow us on Twitter https://twitter.com/saishtech Follow us on facebook https://www.facebook.com/hitshortfilm Follow us on Google Plus https://plus.google.com/u/0/117581417171785096287 Follow us on Linkedin https://www.linkedin.com/in/deepak-raut-9841ab43/ Follow us on Reddit https://www.reddit.com/user/saishtech -~-~~-~~~-~~-~-
Views: 11829 Laptop Repair
The haunting sounds found on VLF (Very Low Frequency) Radio
 
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The haunting sounds found on VLF (Very Low Frequency) shortwave radio. Because VLF waves can penetrate 120 feet into saltwater, they are used for military communication with submarines.
Views: 3587 Curt Rowlett
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: 718026 AtomModel
Radio Frequency Mind Control - Detect and Record
 
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Know if you are a victim. This is a proven self-discovered experiment. Facebook: http://www.facebook.com/profile.php?id=100001699072277&sk=wall
Views: 54657 erikborcaja
How FM radio works? | Bandwidth , frequency , binary , Digital signal | Wikimerky Tamil
 
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Bandwidth : https://youtu.be/78FEiltmDyY Binary Number : https://youtu.be/D_DkXMS8FgE Bandwidth is the most important keyword in communication. Binary is a simple number system , but it's controls our world .
Low Frequency Accuracy
 
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A device can transmit anywhere within the operation band. There is no synchronization between the base station and the device. The Base station is able to demodulate any Sigfox signal within the operational band. For these 2 reasons, there are low-frequency accuracy constraints on the devices. This spectrum analysis shows radio signals emitted by a SIGFOX Ready device. The upper part shows a waterfall view of the operational band whereas the lower part is zooming on these signals. Sigfox network does not care about the absolute frequency of the device.
Views: 2224 SIGFOX
Fallout 4 Track the Courser Radio Frequency
 
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Fallout 4 Track the Courser Radio Frequency. Get to area of maximum courser signal strength.
Views: 84018 TheGamesEntertainer
Beginners: Radio Frequency, Band and Spectrum
 
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This video explains electromagnetic spectrum, frequency, band, bandwidth and how these concepts are used in mobile technology. We also look at antennas for smartphones including 2G, 3G, 4G and 5G
Views: 21634 3G4G
Finding the Radio Frequency on the Shadowed Throne
 
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This video will show you how to find the correct frequency on the Shadowed Throne Zombie map. You need to take the Series and Model number with the spot on the map. Using this information will give you the band and the frequency needed to get this step done! Follow Carefree Llama Gaming on: Xbox Live: ImCarefreeLlama Twitter: http://www.twitter.com/CarefreeLlama Facebook: http://www.facebook.com/CarefreeLlamaGaming Hardware I use to create videos: Capture Card - http://amzn.to/2zGsIgR Microphone - http://amzn.to/2AG1KWy Webcam - http://amzn.to/2F4PstF Support this channel on Patreon: https://www.patreon.com/CarefreeLlamaGaming
Views: 28945 Carefree Llama Gaming
Local Public FM Radio station High Frequency Audio signal (WCPI-FM McMinnville, TN)
 
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This station seems to have a high pitched noise coming though the main signal. I recorded a sample from this station and ran it though Adobe Audition and it's frequency analysis. It shows a interesting peak at the :30 second mark when the noise floor drops.
Views: 649 Nate Newman
MOBILE SIGNAL FREQUENCY BAND (CONNECTION)-நம்ம மொபைல் சிக்னல் Connect ஆவது எப்படி -Tamil
 
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know your mobile frequency - MOBILE SIGNAL FREQUENCY BAND (CONNECTION)-நம்ம மொபைல் சிக்னல் Connect ஆவது எப்படி -Tamil - புது மொபைல் வாங்க போறவங்களுக்கு மிகவும் பயன் படலாம்.. நன்றி
Views: 1284 Tech Master ZEPHAN
Radio Frequency Radiation Detector | Cell phone detector
 
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Energy Harvesting from Electromagnetic Signals. This project is also called as LED Power meter, for Schematic, Breadboard arrangement and more information on this project visit http://rookieelectronics.com/sensor-rf-radiation-detector/ A research on this project by an Indian guy: http://rookieelectronics.com/rf-detector-rocks/
Views: 99790 Pir Arkam
What is RF? Basic Training
 
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Everything you wanted to know about RF (radio frequency) technology: Cover "RF Basics" in less than 14 minutes! http://www.nxp.com/products/rf/
Views: 264184 NXP Semiconductors
What Is The Frequency Of FM Radio?
 
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Things should roll off pretty quickly after that in order to avoid interfering am (or amplitude modulation) and fm frequency are ways of broadcasting radio signals. Find the frequency to listen smooth radio on fm or am in your area information about frequencies used by bbc. Fm broadcasting wikipediaradio broadcast signals hyperphysics concepts. Both transmit the information in form of find your frequency on fm radio latest celebrities picture galleries, local news and competitions. Radio 4, 92 95 fm, 103 105 fm (with local variations for scotland, wales and northern ireland). To 108 megahertz (mhz) also known as vhf band ii while in the americas (itu region 2) it ranges from 88 mhz fm radio is between television channels 6 and 7. Assigned frequencies are at intervals of 30 khz fm broadcast band. Fm broadcasting wikipedia. Am vs fm difference and comparison find your frequency on radio heart. It lists transmitter find the frequency to listen us on fm radio in your area right here modulation, is widely used for a variety of communications applications. In europe, australia and africa (itu region 1), it spans from 87. Find the breeze fm radio frequency for find out areas and locations covers 1 nov 2013 this page links to vhf in order section of television broadcasting stations book. Fm broadcasts on the vhf bands still provide exceptionally high need to find best fm frequency for your siriusxm satellite radio? Use our channel finder help you get listening experience from a collection of information and links licensed radio stations operating in band, as well london frequencies national 28 may 2013 note tan area at left illustration below that am waves are lower than either or tv. Find out about the thousands of different uses for an analog fm station, a proof performance would check between 50hz to 15,000hz. Radio & tv handbook vhf fm radio by frequency what is modulation channel finder sirius xm. Thus, as 10 jun 2016 sbs radio 1 and 2 are broadcast on both the am fm frequencies in melbourne, sydney, canberra newcastle. Listening on fm radio x. Turn up the feel good at heart radio find frequency to listen x in your area right here. Sbs radio tune into ireland's christmas station on these fm frequencies across ireland. The fm stations are assigned center frequencies at 200 khz separation radio frequency list am radio, cb these all different chunks of the spectrum. London's fm radio stations transmission zero. Radio frequency list how the radio spectrum works what is audio range of fm radio? Quora. How to listen radio x fm jpg 618 298manchesterways classic is the only uk station broadcast 100. Tune in to sbs on am fm radio frequencies christmas. The fm broadcast band, used for radio by stations, differs between different parts of the world. Listen via fm or am frequency smoothfind your on radio the breeze. Listening on fm radio classic. Am, fm radio waves and sound cybercollege. Mhz is used, or some portion thereof, with few exceptions in the former soviet republics, and eastern bloc countries, older 65 74 band also used.
Views: 265 Aile Aile
Pro RF Detector (radio Frequency)
 
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Our pocket size Pro Radio Frequency Detector locates transmitters or bugging devices in a room or automobile. This pro RF detector excels at silent or vibration detecting of RF signals for RF security and counter-surveillance applications. Specifications: • Internal NiCD battery pack • Vibration motor and earphone for private detection • 5 section bar graph to show relative RF signal strength • Low power consumption • 1 MHz - 6 GHz Frequency range • Sensitivity adjustment • 9V DC 300mA power • SIZE: 3 3/4" x 2 3/4" x 1 1/4" Includes: • AC wall charger • 2.4 GHz antenna • Earphone • Users manual
Views: 24612 clearviewsecurity
Strange radio AM frequency signal
 
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I was browsing through radio stations, when I switched to A.m. frequencies, I found this. I do not know what it is.
Views: 40 Lightning Man
WiFi Radiation Blocking and Shielding Radio Frequency Radiation with Metal Screen
 
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PLEASE SUPPORT my EMF Safety Zone Channel! - EMF Meters, Consulting, Resources: https://emf-protection.us - eBay store for EMF meters and related products at the lowest prices: http://www.ebaystores.com/healthyjoyfulsustainableliving Join me on Twitter for educational updates! https://twitter.com/EMFSafetyZone / @EMFSafetyZone Here is a simple, do-it-yourself fix for blocking/shielding radio frequency radiation from WiFi, cordless phones and cell towers. And this little trick almost got me evicted from the apartment I was living in because the owner was not happy with what I did. That is why I only use the Swiss Shield RF Shielding Fabric on the inside now! However, simply by using metal (aluminum) screen from the hardware store you can block large amounts of RF from coming into your home or apartment. This little trick also works better when the aluminum screen is grounded as shown in the video.
Views: 60742 EMF Safety Zone
Radio Frequency Interference: "The Invisible Battleground" 1961 US Army
 
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more at http://scitech.quickfound.net "EFFORTS AND FACILITIES AT ELECTRONIC ENVIRONMENTAL TEST FACILITY, FT. HUACHUCA, TO SOLVE RADIO INTERFERENCE PROBLEM OF THE FIELD ARMY." US Army film MF11-9416 Public domain film from the US National Archives, slightly cropped to remove uneven edges, with the aspect ratio corrected, and 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://creativecommons.org/licenses/by-sa/3.0/ http://en.wikipedia.org/wiki/Electromagnetic_interference Electromagnetic interference (EMI, also called radio-frequency interference or RFI when in radio frequency) is disturbance that affects an electrical circuit due to either electromagnetic induction or electromagnetic radiation emitted from an external source. The disturbance may interrupt, obstruct, or otherwise degrade or limit the effective performance of the circuit. These effects can range from a simple degradation of data to a total loss of data. The source may be any object, artificial or natural, that carries rapidly changing electrical currents, such as an electrical circuit, the Sun or the Northern Lights. EMI can be intentionally used for radio jamming, as in some forms of electronic warfare, or can occur unintentionally, as a result of spurious emissions for example through intermodulation products, and the like. It frequently affects the reception of AM radio in urban areas. It can also affect cell phone, FM radio and television reception, although to a lesser extent... Types Narrowband EMI or RFI interference typically emanates from intended transmissions, such as radio and TV stations or cell phones. Broadband EMI or RFI interference is unintentional radiation from sources such as electric power transmission lines. Conducted electromagnetic interference is caused by the physical contact of the conductors as opposed to radiated EMI, which is caused by induction (without physical contact of the conductors). Electromagnetic disturbances in the EM field of a conductor will no longer be confined to the surface of the conductor and will radiate away from it. This persists in all conductors and mutual inductance between two radiated electromagnetic fields will result in EMI. Susceptibilities of different radio technologies Interference tends to be more troublesome with older radio technologies such as analogue amplitude modulation, which have no way of distinguishing unwanted in-band signals from the intended signal, and the omnidirectional antennas used with broadcast systems. Newer radio systems incorporate several improvements that enhance the selectivity. In digital radio systems, such as Wi-Fi, error-correction techniques can be used. Spread-spectrum and frequency-hopping techniques can be used with both analogue and digital signalling to improve resistance to interference. A highly directional receiver, such as a parabolic antenna or a diversity receiver, can be used to select one signal in space to the exclusion of others. The most extreme example of digital spread-spectrum signalling to date is ultra-wideband (UWB), which proposes the use of large sections of the radio spectrum at low amplitudes to transmit high-bandwidth digital data. UWB, if used exclusively, would enable very efficient use of the spectrum, but users of non-UWB technology are not yet prepared to share the spectrum with the new system because of the interference it would cause to their receivers. The regulatory implications of UWB are discussed in the ultra-wideband article... http://en.wikipedia.org/wiki/Fort_Huachuca Fort Huachuca is a United States Army installation whose garrison is under the command of the United States Army Installation Management Command. It is located in Sierra Vista in Cochise County, in southeast Arizona, about 15 miles (24 km) north of the border with Mexico. Beginning in 1913, for its first 20 years the fort was the base for the "Buffalo Soldiers" of the 10th Cavalry Regiment. During the buildup of World War II, the fort had quarters for more than 25,000 male soldiers and hundreds of WACs. In the 2010 census, Fort Huachuca had a population of about 6,500 active duty soldiers, 7,400 military family members and 5,000 civilian employees. Fort Huachuca has over 18,000 people on post during the peak working hours of 0700 and 1600 on week days, making it one of the busiest Army installations...
Views: 11678 Jeff Quitney
Amplified radio frequency interference in tube guitar amps
 
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The cinematography isn't great as I'm watching my hands more than the LCD. In this particular situation I'm getting a lot of interference and noise because in creating a positive feedback loop for a tremolo circuit I over-shot the frequency needed (very low, around 7Hz ) and ended up amplifying only the noise produced by the tube. That noise is what you use to send the tube into oscillation but is not amplified for several reasons. One being that you aren't running the main signal through the oscillator tube, you are using the current fluctuations of the oscillator's grid and cathode to pull the bias of an audio tube back and forth between two points of efficiency. The signal within the oscillator tube is being amplified as it has to be to send the tube into fluctuations and a small portion can actually be accessed through the same cathode that is tied to the audio circuit. However, once the tube is oscillating the dominant frequency is to low for the amplifier to reproduce. So long as you have a chassis that consists of a ground plane completely surrounding the internal circuitry, one of the few ways an actual radio (high frequency) signal can get into the circuitry is through the cable use to connect the amp to whatever instrument that is used to supply a signal. Unwanted frequencies are shelved off at a determined point by running the audio signal through a resistor just before it enters the first gain stage. This resistor forms a low pass filter in conjunction with the internal capacitances of the tube. Dynamic Input Capacitance: Cdyn = Cgk + (Cga * A) where Cdyn = Dynamic Input Capacitance Cgk = Grid to cathode capacitance Cga = grid to anode capacitance A = the gain of the tube. The gain ratings stated on most tube sheets are theoretical numbers, so to nail this equation right on you need to first determine what the actual gain of the particular tube you are running, inside the chassis and ready to accept a signal. But that is another subject entirely. Lets assume the gain is 64, the Cgk is 2.1 and the Cga is 3.6 Cdyn = 232.5 You need to include a little extra capacitance for the wire inside the amp. So lets call it an even 240. To find a value for the grid stopper you determine the frequency at which you want to start the attenuation. The grid stoppers on most Fender amps is 68K (a shelf of about 21kHz) which is over kill and the high end response of the amp can actually be improved by changing this resistor to one of a lower value. By high end response I don't mean the ability of the amp to reproduce tones in the higher octave registers. What I am implying is that with a shelf of that value the potential exists for a lot of what is referred to as the "character" of the instrument or equipment to be cut off. Even though these frequencies are technically beyond our range of hearing, cutting them off at the start of amplification can take away from the quality of the end product as tube amps are very reactive pieces of equipment. The purpose of an amplifier is to reproduce the input signal as purely as possible. Those frequencies exist in the note produced by the instrument so it should follow that the maker is to preserve them as much as possible of one hope to end up with a valid result. The formula for choosing a grid stopper in a low pass filter is: Rg = 1 / (2 * Pi * f * (Cdyn * 10- 12))
Views: 8801 Pontoonian
Nazi Mind Control 433 Megahertz Radio Frequency
 
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Various sources have mentioned the 433 megahertz radio frequency as relating to mind control. In this video I show with a simple ham radio how a mysterious "someone" is broadcasting a very strong signal at 432 megahertz and a weaker signal at 432.85 megahertz here in the city of Calgary Canada. Are the mind control techniques first pioneered by the Nazi's still in effect today? Upon all of us? You decide. The truth is out there... trust no one. ;-) Learn more about the Nazis here. https://www.youtube.com/watch?v=XzTh4we8MmU Please subscribe to my channel! Thanks!
Views: 19657 spiritelemental
FREQUENCY MODULATION - PART I - BASIC PRINCIPLES
 
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FREQUENCY MODULATION - PART I - BASIC PRINCIPLES - Department of Defense 1964 - PIN 28398 - FUNDAMENTALS OF AM AND FM RADIO COMMUNICATION, HOW FM ELIMINATES PROBLEM OF ELECTRICAL INTERFERENCE, FUNCTIONING OF FM RADIO EXAMINED IN DETAIL.
Views: 195200 PublicResourceOrg
Mini-Jammers: Radio frequency (RF) & cell signals
 
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* I do not own anything in this video, the credits goes to the respective owners.
Views: 1087 Naikon
Amplitude Modulation vs Frequency Modulation │ AM vs FM │ Difference Between AM and FM
 
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Amplitude Modulation vs Frequency Modulation │ AM vs FM │ Difference Between AM and FM AM or Amplitude Modulation and FM or Frequency Modulation are ways of broadcasting radio signals. Both transmit the information in the form of electromagnetic waves. AM works by modulating the amplitude of the signal or carrier transmitted according to the information being sent, while the frequency remains constant. This differs from FM technology in which information is encoded by varying the frequency of the wave and the amplitude is kept constant. More detail:- http://www.learningengnr.com/amplitude-modulation-vs-frequency-modulation%E2%94%82difference-fm/ More videos:- Power Factor Correction - Power Factor Correction Methods - Power Factor https://www.youtube.com/watch?v=ADilk28vfj0 Series and Parallel Circuits - Series VS Parallel - Difference between Series and Parallel Circuits https://www.youtube.com/watch?v=sbocWMTmPK8 Please visit my site: www.learningengnr.com/ Please visit our Blog: https://learningengineering1994.blogspot.com/ Connect with me in my social page: https://www.facebook.com/Learning.Engring/ Subscribe my youtube channel: https://www.youtube.com/learningengineering/ Find us On Pinterest: https://www.pinterest.com/konok13/learning-engineering/ Find us On Google+: https://plus.google.com/u/0/+LearningEngineering Find us On Twitter: https://twitter.com/konokkamruzzam Find us On Linkedin : https://www.linkedin.com/in/konok-kamruzzaman-135169137/
Views: 15459 Learning Engineering
Tracking down RFI Radio Frequency Interference Part2
 
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Using a cheap AM radio tuned between channels is a good way to direction find Interference. This is a great way to find a bad power pole or line. If you have a large "S" signal and don't know where it's coming from just take a radio and a walk.
Views: 10358 North Carolina Prepper
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: 142098 MITK12Videos
Distance Measurement using Radio Frequency Signal (ZigBee)
 
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Range information can be used in many applications such as collision detection for automobiles. There are a lot of ideas to measure distances between two objects such as GPS, sound, camera and ZigBee. Our project focus on quickly measures the distance between two stationary objects in certain environment using the ZigBee radio frequency module.
Views: 311 Jack T
How to Change R/C Car Frequency
 
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A simple way to change the frequency of of your R/C car
Views: 115922 Heilman Hackatronics
Finding the frequency of a car keyfob.
 
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You need a spectrum analyzer, or an SDR to do it, but it can be done! Headphone warning, I do give you a warning verbally, but in case you aren't paying attention then, here it is again!
Views: 4759 Michael MacEachern

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