The mysterious flash came and went in a matter of days.September 06, 2019NASA& 39;s NuSTAR X-ray observatory recently picked up a green flash of light in the aptly named fireworks galaxy (NGC 6946). Within a matter of days, the green light had already disappeared.While the exact origin of this mystery space light is not fully understood, a new study, published in the Astrophysical Journal, offers some possible explanations for the event.
GSM primer includes:GSM introductionNetwork architectureNetwork interfacesRF interface / slot & burstGSM framesPower classes & controlChannelsAudio codecs / vocodersHandoverGSM is a second generation or 2G mobile phone system. Originally introduced in 1991, it is still used for many voice calls and some low data rate services that require its use.
Ethernet IEEE 802.3 Includes:Ethernet introductionStandardsEthernet data frame structure100Mbps Fast EthernetGigabit Ethernet, 1GE10 Gigabit Ethernet, 10GEEthernet cablesHow to buy Ethernet cablesRouters, hubs, switches - the differencesPower over Ethernet, PoECarrier EthernetEthernet, IEEE 802.3, is one of the most widely used standards for computer networking and general data communications.
Radio and electronics history reveals many fascinating insights. Pioneers who developed new technologies to the explanations of how these technologies developed. Morse code and the first telegraph systems to vintage radio,, how valves (tubes) were developed, and much more.Telecommunications historyRadio historyRadio & electronics components historyFamous scientistsDescriptions and details about the lives of famous scientists - pioneers in the development of radio and electronics technology.
Signal Generators includes:Signal generator basicsSignal generator types:RF signal generator basicsArbitrary waveform generatorFunction generatorPulse generatorA signal generator is piece of test equipment that produces an electrical signal in the form of a wave. This is used as a stimulus for the item being tested.
LTE was the 4G successor to the 3G UMTS system which was developed to provide a further evolution of the mobile telecommunications system available.Providing much higher data speeds and greatly improved performance as well as lower operating costs, the scheme started to be deployed in its basic form around 2008.
The Electronics Notes supplier directory provides an excellent view of the activities of major suppliers within the electronics industry.Distributor directoryDistributors are the key to the manufacturing sector of the electronics industry. These days distributors are far more than a simple stockist and supplier of electronic components.
Logic Probe Tutorial Includes:Logic probe basicsHow to use a logic probeLogic probes are very cheap and easy to use as simple digital testers in many applications. Logic probes can provide a simple way of testing slow moving digital logic levels and signals.Being very cheap to buy, these digital logic probes are ideal for experimenters, but they will seldom be found in a professional electronics laboratory because of their limited measurement capability and the availability of more advanced test equipment, like logic probes or mixed signal oscilloscopes or other forms of electronic test equipment.
Earphones, Headphones & Headsets includes:Introduction to Earphones & headphonesHeadphone specificationsHow to buy best headphones / earphones for youBuying the best headphones or earphones may not be as easy as it may appear at first sight. There is a huge choice of types of headphone / earphone and then an enormous number of different manufacturers and models.
About Electronics Notes:About Electronics NotesIan PooleBooks by Ian PooleAdvertise with Electronics NotesDuring his career, Ian Poole had gained a very wide degree of experience within the radio and electronics development and design industries. He gained a degree in Electrical and Electronics Engineering from University College London, and since then he has become a Chartered Engineer and he is a Fellow of the Institution of Engineering and Technology.
Ham radio bands summaries includes:Ham radio bands summaries136 kHz LF bandHF bandsVHF bandsUHF bandsThe properties of each amateur radio band vary for a variety of reasons. Everything from the propagation characteristics to the band planning, and the different spectrum allocations for different countries vary.
DECT cordless telephones includes:DECT basicsDECT standardDECT RF interface / physical layerDECT channels & bandsDECT securityCordless phone buying guideDECT (Digital Enhanced Cordless Telecommunications) technology is widely used for residential, and business cordless phone communications. Designed for short-range use as an access mechanism to the main networks, DECT technology offers cordless voice, fax, data and multimedia communications, wireless local area networks and wireless PBX.
There are a number of basic concepts that form the foundations of today& 39;s electronics and radio technology. Electrical current, voltage, resistance, capacitance, and inductance are a few of the basic elements of electronics and radio.Apart from current, voltage, resistance, capacitance, and inductance, there are many other interesting elements to electronic technology.
GPIB / IEEE 488 Bus Includes:GPIB / IEEE 488 busGPIB operation / commands / protocolIEEE 488.2How to Use GPIB / IEEE 488GPIB / IEEE 488 cablesGPIB / IEEE 488 connectorsGPIB / IEEE 488 pinout / pin connectionsThe GPIB or General Purpose Interface Bus or IEEE 488 bus is still one of the more popular and versatile interface standards available today.
Bluetooth Speakers Includes:How to buy best speakerBluetooth speakers are a very convenient way or listening to music. Increasingly music is being stored on mobile phones, or possibly other devices that are Bluetooth enabled.Using a Bluetooth speaker it is possible to listen to music from these small portable devices at a sensible volume and without using earphones.
There are a number of commonly available RF connectors that are used with coaxial cable to provide screened connections. These coaxial cable connectors are used in a number of areas whether to carry RF or radio frequency signals or just to provide a much higher level of screening than would be possible if more ordinary & 34;open& 34; connectors were used.
WiFi IEEE 802.11 Includes:Wi-Fi IEEE 802.11 introductionStandardsWi-Fi Alliance generationsSecurityHow to stay safe on public Wi-FiWi-Fi BandsRouter location & coverageHow to get best Wi-Fi performanceHow to buy the best Wi-Fi routerWi-Fi boosters, range extenders & repeatersWi-Fi wired & powerline extenderAlthough Wi-Fi routers are now more effective than ever before, there can still be issues with dead-spots and poor coverage in the home or office.
EMC / EMI Includes:EMC basicsEMI interference basicsEMC standardsCISPR11CISPR16CISPR22FCC 47 part 15EMC design techniquesEMC compliance testElectromagnetic compatibility, EMC is the concept of enabling different electronics devices to operate without mutual interference - Electromagnetic Interference, EMI - when they are operated in close proximity to each other.
The dip meter is a versatile item of test equipment that can be used for making RF measurements from testing resonance to checking for RF emissions.Dip Meter Tutorial Includes:Dip meter / GDO basicsHow to use a dip meter / GDOUsing GDO to measure inductanceUsing GDO to measure capacitanceMeasuring antenna resonant frequencyMeasuring feeder electrical lengthThe dip meter often called a grid dip oscillator or GDO is a simple but effective test instrument that can give an indication of many RF parameters of circuits and components.
Amateur radio is one of the most exciting hobbies today. There are over a million radio amateurs or & 34;radio hams& 34; around the world and this is an indication of its popularity. Since the first amateur radio experimenters at the beginning of the twentieth century, the number of people interested in the hobby have grown.
Microphone Tutorial Includes:Microphone basicsMicrophone typesMicrophone specsMicrophone directionalityDynamic microphoneCondenser microphoneElectret microphoneRibbon microphoneCrystal / ceramic microphoneBoundary / PZM microphoneCarbon microphoneHow to buy best microphoneMicrophones for videoMicrophones for vocals/ singingMicrophones are an essential part of any audio recording system.