Noaa weather receiver

Si4707 NOAA Weather Receiver/SAME Decoder This board is a new and improved version of the breadboard module that has been on the market for sometime from AIW Industries. New features include: Raspberry Pi B+/2 40 pin header layout Low Noise Amplifier circuit that provides roughly +20dB or more of signal gain Weather radar live. You have planned a trip into nature? Or simply want to enjoy the sun on your You will receive an overview of the current weather and will be able to predict what the weather will be...View accurate wind, swell and tide forecasts for any GPS point. Customize forecasts for any offshore location and save them for future use...Infinity Wake INFR3000 AM/FM Radio Receiver NOAA Weather Band Bluetooth USB Port Waterproof Marine Stereo [In Stock] $269.95.$500.01 to $1000.. $14.95 For USA customers (except: AK/HI/PR) Insurance included. Weather Receivers & Weather Stations Many scanners, wideband and specialty receivers also receive NOAA weather broadcasts. Click here for American or Canadian weather station information. Click here for SAME codes by state NOAA Weather Software. NOAA Satellite Receiver; receive_and_process_satellite.sh Add-On; Wxtoimg Restored; Change Serial # For RTL; Change Serial # Using Win10; OP25 Software. Boatbod OP25 Version. Adding A Desktop Icon; Auto Launch OP25 Browser; OP25 Dashboard; OP25 USB Sound Card; Rasp Pi OP25 Phase 1/2; Osmocom OP25 Version. Osmocom OP25 On ... While NOAA's National Weather Service staff produce Weather Radio broadcasts, NWS does not sell receivers. Receivers can be found atretail outlets, electronics stores, department stores...Hardware 1. PC or something similar. 2. Weather Radio Receiver e.g. Midland WR300 Make sure it either has a 'Line Out' or 'Headphone' output jack. 3. Audio cable from receiver to PC (whatever). Raspberry Pi NOAA Weather Satellite Receiver: A new pile of parts means a new project is in the works.I’m building a Raspberry Pi based NOAA weather satellite receiver. I’ve got some experience with receiving signals from NOAA satellites, but will be a little different, as all of t… Space Weather Prediction Center. National Oceanic and Atmospheric Administration. NOAA Space Weather Scales. Customer Needs & Requirements Study.Most NOAA Weather Radio receivers are either battery-operated portables or AC-powered desktop models with battery backup so they can be used in many different situations. Some CB radios, scanners, short wave and AM/FM radios are capable of receiving NOAA Weather Radio transmissions. Want a minute-by-minute forecast? MSN Weather tracks it all, from precipitation predictions to severe weather warnings, air quality updates, and even wildfire alerts.A new generation of NOAA Weather Radio receivers has arrived at local electronic stores. The SAME models are programmable... allowing listeners to set their receivers' warning alarms for selected, individual counties and types of watches or warnings. This feature effectively screens out alarms that listeners do not wish to receive. Here's a Quick HOWTO from NOAA, and more technical Advanced Info Here But, you say, you've got a really tough situation? See this $40 bad boy. Hardware 1. PC or something similar. 2. Weather Radio Receiver e.g. Midland WR300 Make sure it either has a 'Line Out' or 'Headphone' output jack. 3. Audio cable from receiver to PC (whatever). Dec 06, 2019 · NOAA Frequency Sequence Channel Assignment This method is popular and the most common. Simply an increasing radio frequency sequence. Your weather radio channel number sequence may follow this method – check your radio’s documentation. 1 = 162.400 Mhz 2 = 162.425 Mhz 3 = 162.450 Mhz 4 = 162.475 Mhz 5 = 162.500 Mhz 6 = 162.525 Mhz 7 = 162.550 Mhz Discover our professional weather maps. HD Satellite Weather Radar Rain & Snow Air Quality Wind METAR.The National Oceanic and Atmospheric Administration (NOAA) is a scientific agency that's part of The NOAA weather radio band can be found in standalone receivers designed to receive these...Most people buy NOAA weather radios to receive emergency weather bulletins. The receiver gets all the broadcasts in the area and can be programmed for specific SAME codes.An inexpensive VHF antenna or scanner antenna mounted near the roof with coaxial or shielded cable to the receiver will provide improved reception for your NOAA Weather radio and allow us to provide you with timely warnings and statements of hazardous weather conditions! Outdoor antennas should be installed carefully! PDF | National Oceanic and Atmosphere Administration (NOAA) has a group of manmade This paper describes how this setup provided a cost-efficient solution for receiving NOAA data in local...Jan 27, 2022 · In this paper, implementation of a simple portable satellite signal receiving system using HackRF SDR board for reception of weather images from NOAA satellite is presented. Using this SDR receiver, live weather data of any geographical location can be directly received. Discover our professional weather maps. HD Satellite Weather Radar Rain & Snow Air Quality Wind METAR.Space Weather Data and Products. Product Subscription Service | Statistics. As Conditions Warrant. SWPC Space Weather Alerts; watches, warnings, alerts, and summaries.NOAA Weather Software. NOAA Satellite Receiver; receive_and_process_satellite.sh Add-On; Wxtoimg Restored; Change Serial # For RTL; Change Serial # Using Win10; OP25 Software. Boatbod OP25 Version. Adding A Desktop Icon; Auto Launch OP25 Browser; OP25 Dashboard; OP25 USB Sound Card; Rasp Pi OP25 Phase 1/2; Osmocom OP25 Version. Osmocom OP25 On ... Weather-Ready Nation Ambassador™ and NOAA ALL-Hazards Weather Radio™ are trademarks of the You should have your own dedicated NOAA or Environment Canada Weather Radio receiver...$500.01 to $1000.. $14.95 For USA customers (except: AK/HI/PR) Insurance included. Weather Receivers & Weather Stations Many scanners, wideband and specialty receivers also receive NOAA weather broadcasts. Click here for American or Canadian weather station information. Click here for SAME codes by state Here's a Quick HOWTO from NOAA, and more technical Advanced Info Here But, you say, you've got a really tough situation? See this $40 bad boy. Hardware 1. PC or something similar. 2. Weather Radio Receiver e.g. Midland WR300 Make sure it either has a 'Line Out' or 'Headphone' output jack. 3. Audio cable from receiver to PC (whatever). Very accurate model provided by the European Centre for Medium-Range Weather Forecasts. Clear winner compared to other forecast models. Since the model is commercial, only a few companies in...NOAA Space Weather Scale descriptions can be found at This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications.Feb 15, 2022 · The fully waterproof device receives both AM and FM bands as well as all seven NOAA weather channels and reports, with 20 memory pre-sets (ten on FM, five on AM, and five on Weather), a large LED black-lit screen that’s easy to read from a distance, and a timer function that ranges that will shut off the device after one to 120 minutes of playback. Interactively zoom and animate weather satellite images from a variety of geostationary satellites. Features of this site include: sectoring, animation of global images and at high resolution for a region...NWS has evaluated devices carrying the NOAA Weather Radio All Hazards logo for user friendliness and performance capabilities. Residential Grade Radios and Features Prices vary from $20 up, depending on the model. Many receivers have an alarm feature, but some may not. Among the more useful features in a receiver are: western union online inmate NOAA Weather Radio - Emergency NOAA/AM/FM Battery Operated Portable Radio with Best EXMAX EXD-737 Aviation FM/AM/SW/Band Shortwave Radio Receiver NOAA Weather Radios VHF...Decoding Weather Satellites Using An SDR Receiver NOAA-19. IZ5RZR - how to receive Noaa satellites with Sdr RTL2832U and QFH Antenna or Turnstile Antenna, this is a step by step guide.NOAA Weather Software. NOAA Satellite Receiver; receive_and_process_satellite.sh Add-On; Wxtoimg Restored; Change Serial # For RTL; Change Serial # Using Win10; OP25 Software. Boatbod OP25 Version. Adding A Desktop Icon; Auto Launch OP25 Browser; OP25 Dashboard; OP25 USB Sound Card; Rasp Pi OP25 Phase 1/2; Osmocom OP25 Version. Osmocom OP25 On ... Inovonics 676 INOmini NOAA Weather Receiver Visit the INOVONICS Store $89100 A SENSITIVE, DSP-BASED (SDR) RECEIVER FOR THE 162.400 TO 162.550 NORTH AMERICAN WEATHER BAND. FLASHING-RED FRONT-PANEL ALARMS AND REAR-PANEL ‘TALLIES’ FOR WAT (1050HZ TONE), LOW SIGNAL AND AUDIO LOSS. Aviation METARs: the definitive list! What is a METAR weather report and how do pilots decode METARs and TAFs? Get our METAR TAF Decode PDF!Nattgew/XP-NOAA-Weather-Plugin. This commit does not belong to any branch on this repository, and may belong to a fork outside of the X-Plane/Resources/plugins/PythonScripts/PI_noaaWeather.py.[XPGFS] NOAA Weather. XPGFS brings alive the x-plane atmosphere, combining METAR reports and NOAA Weather data for the whole planet.Mar 01, 2018 · the noaa/nesdis high rate information transmission / emergency managers weather information network (hrit/emwin) broadcast can be received using a vsat system with the basic components of a vsat antenna, low-noise block-down converter (lnb), satellite signal receiver, software to de-encapsulate the broadcast stream and some type of visualization … NOAA Weather Radios range in cost from $25 up to $100 or more, depending on the quality of the receiver and the number of features it has. We also recommend that you get an "EAS-type" programmable Weather Radio receiver for those who wish to receive site-specific as well as warning message element choices. Dec 06, 2019 · NOAA Frequency Sequence Channel Assignment This method is popular and the most common. Simply an increasing radio frequency sequence. Your weather radio channel number sequence may follow this method – check your radio’s documentation. 1 = 162.400 Mhz 2 = 162.425 Mhz 3 = 162.450 Mhz 4 = 162.475 Mhz 5 = 162.500 Mhz 6 = 162.525 Mhz 7 = 162.550 Mhz The C. Crane CC Pocket can receive NOAA Weather alerts and has rubber sides that provide protection if you drop it, making it suitable for camping and other outdoor uses.NOAA Weather Radio NWR; also known as NOAA Weather Radio All Hazards is an automated 24-hour network of VHF FM weather radio stations in the United States (U.S.) that broadcast weather information directly from a nearby National Weather Service office. sini app The National Oceanic and Atmospheric Administration's (NOAA) GOES-T launched at 4:38 Fires, hurricanes and flood-inducing atmospheric rivers have been causing more damage in recent years.NOAA Weather Radio allows for access to important weather information across the country 24 hours a Having a way to receive weather alerts is critical to ensuring your safety during an emergency.You can also receive weather from weather routers like Chris Parker. A single-sideband receiver is the least expensive way to receive weather, but you must often have an antenna installed to get...Kaito Emergency Radio Voyager Max KA900 Digital Solar Dynamo Crank Wind Up AM/FM/SW & NOAA Weather Stereo Radio Receiver with Bluetooth, Real-time Alert, MP3 Player, Recorder & Phone Charger, Black 646 3 offers from $99.98 Product Description An inexpensive VHF antenna or scanner antenna mounted near the roof with coaxial or shielded cable to the receiver will provide improved reception for your NOAA Weather radio and allow us to provide you with timely warnings and statements of hazardous weather conditions! Outdoor antennas should be installed carefully! Weather XML information in a simple, get local forecast and weather data in XML format by FTP or email at a fast Choose it, pay it and start receiving your chosen weather data in less than1 hour.Traditional weather radios simply receive NOAA's weather broadcast (usually within a 50-mile When the Weatheradio receives a weather alert: • it sounds an alert (siren or beep) • a description of...Sep 24, 2021 · NOAA broadcasts can be accessed on regular radios, including those found in automobiles. However, these radios may not always be in range of the NOAA frequencies. For more reliable access, it’s recommended that you use a dedicated NOAA radio weather receiver. Some receivers come with a range of valuable features. Kaito Emergency Radio Voyager Max KA900 Digital Solar Dynamo Crank Wind Up AM/FM/SW & NOAA Weather Stereo Radio Receiver with Bluetooth, Real-time Alert, MP3 Player, Recorder & Phone Charger, Black 646 3 offers from $99.98 Product Description Si4707 NOAA Weather Receiver/SAME Decoder This board is a new and improved version of the breadboard module that has been on the market for sometime from AIW Industries. New features include: Raspberry Pi B+/2 40 pin header layout Low Noise Amplifier circuit that provides roughly +20dB or more of signal gain When putting together your Severe Weather Safety Kit, one item that is an absolute must is a NOAA Weather Radio, such as one of the models shown belowYou are now able to receive weather alerts for your area and surrounding areas. To narrow the alerts to just your county, see page 8 to program the S.A.M.E. code for your county into the radio.The National Oceanic and Atmospheric Administration (NOAA) is a scientific agency that's part of The NOAA weather radio band can be found in standalone receivers designed to receive these...NOAA Weather Radio allows for access to important weather information across the country 24 hours a Having a way to receive weather alerts is critical to ensuring your safety during an emergency.These frequencies are outside the normal AM or FM broadcast bands. All NOAA Weather Radio stations broadcast on one of seven frequencies in the VHF Public Service band: 162.400 megahertz (MHz), 162.425 MHz, 162.450 MHz, 162.475 MHz, 162.500 MHz, 162.525 MHz, and 162.550 MHz. While some older Weather Radio receivers will only have three ... Inovonics 676 INOmini NOAA Weather Receiver Visit the INOVONICS Store $89100 A SENSITIVE, DSP-BASED (SDR) RECEIVER FOR THE 162.400 TO 162.550 NORTH AMERICAN WEATHER BAND. FLASHING-RED FRONT-PANEL ALARMS AND REAR-PANEL ‘TALLIES’ FOR WAT (1050HZ TONE), LOW SIGNAL AND AUDIO LOSS. Built-in weather receiver sounds an alarm when your NOAA weather station sends an alert 50-frequency search skip locks out undesired frequencies*AM/FM/WB receiver *NOAA Weather band frequencies:162.400-162.550MHz *LED light *Built-in Speaker *Earphone socket *Power supply:DC-3V AAAx2pcs Batteries(not included) *Unit size...Find the most current, accurate and reliable weather forecasts and conditions with The Weather Network.Weather radios monitor the seven radio frequencies that the National Weather Service uses to There are over 900 NOAA weather station transmitters covering almost 95% of the United States.Ability to receive transmissions from NOAA's Weather Radio All Hazards: This nationwide network of radio stations broadcasts continuous weather information directly from the nearest National Weather...View accurate wind, swell and tide forecasts for any GPS point. Customize forecasts for any offshore location and save them for future use...Sign up for Space Weather Alerts and you'll receive a text message when magnetic storms erupt. SPACE WEATHER BALLOON DATA: Almost once a week, Spaceweather.com and the students of...Nattgew/XP-NOAA-Weather-Plugin. This commit does not belong to any branch on this repository, and may belong to a fork outside of the X-Plane/Resources/plugins/PythonScripts/PI_noaaWeather.py.4. Clime: NOAA Weather Radar Live (Android, iOS: Free). Now known as Clime, the app formerly known as NOAA Radar Pro continues to stand out from the crowd with real-time radar delivered...Receive weather alert notifications in your area, as well as in your saved locations, wherever you are in Canada. Get your latest forecast information directly from Canada's official weather source.I'm building a Raspberry Pi based NOAA weather satellite receiver. I've got some experience with receiving signals from NOAA satellites, but will be a little different, as all of the work is going to be...Nice Midland 7 channel all hazard NOAA weather radio with emergency alerts. Complete with all factory original accessories - Radio with antenna - AC power cable - 12V Car power cable - all...Si4707 NOAA Weather Receiver/SAME Decoder This board is a new and improved version of the breadboard module that has been on the market for sometime from AIW Industries. New features include: Raspberry Pi B+/2 40 pin header layout Low Noise Amplifier circuit that provides roughly +20dB or more of signal gain Space Weather Data and Products. Product Subscription Service | Statistics. As Conditions Warrant. SWPC Space Weather Alerts; watches, warnings, alerts, and summaries.Dec 06, 2019 · NOAA Frequency Sequence Channel Assignment This method is popular and the most common. Simply an increasing radio frequency sequence. Your weather radio channel number sequence may follow this method – check your radio’s documentation. 1 = 162.400 Mhz 2 = 162.425 Mhz 3 = 162.450 Mhz 4 = 162.475 Mhz 5 = 162.500 Mhz 6 = 162.525 Mhz 7 = 162.550 Mhz Mar 01, 2018 · the noaa/nesdis high rate information transmission / emergency managers weather information network (hrit/emwin) broadcast can be received using a vsat system with the basic components of a vsat antenna, low-noise block-down converter (lnb), satellite signal receiver, software to de-encapsulate the broadcast stream and some type of visualization … NOAA Weather Radio NWR; also known as NOAA Weather Radio All Hazards is an automated 24-hour network of VHF FM weather radio stations in the United States (U.S.) that broadcast weather information directly from a nearby National Weather Service office.Most NOAA Weather Radio receivers are either battery-operated portables or AC-powered desktop models with battery backup so they can be used in many different situations. Some CB radios, scanners, short wave and AM/FM radios are capable of receiving NOAA Weather Radio transmissions. Weather radios are designed to receive weather alerts concerning natural disasters such as hurricanes, tornados, storms, and more. The American and Canadian governments are both...NOAA Weather Radio broadcasts National Weather Service warnings, watches, forecasts and other hazard NWR requires a special radio receiver or scanner capable of receiving the signal.NWSChat - NOAA's National Weather Service. To make a short story long a NOAA weather receiver is an inexpensive way to receive weather from a reputable source without the Internet.Skymate weather fax receiver skymate 100 satelite communicator. Retekess PR15 Mini Pocket Radio FM/AM/WB Tuning Radio Receiver NOAA Weather T0B0.Most people buy NOAA weather radios to receive emergency weather bulletins. The receiver gets all the broadcasts in the area and can be programmed for specific SAME codes.Learn more about Teams. NOAA weather API. or could you give me any other link who give hourly forecast in the API. i tried yahoo weather, weatherbug, world weather online. they are not giving...The National Oceanic and Atmospheric Administration (NOAA) is a scientific agency that's part of The NOAA weather radio band can be found in standalone receivers designed to receive these...The reigning body of weather radios is the National Weather Service , which is part of the National Oceanic and Atmospheric Administration (NOAA).Space Weather Data and Products. Product Subscription Service | Statistics. As Conditions Warrant. SWPC Space Weather Alerts; watches, warnings, alerts, and summaries.NOAA Weather Radar Live used to be one of our top recommendations because it was so well-designed, and it offered plenty of free data. However, that's changed.The sources:US National Weather Service (NWS), the National Oceanic and Atmospheric Administration (NOAA), the National Centers for Environmental Prediction (NCEP)...What is the typical broadcast range of a NOAA Weather Radio transmitter? The normal broadcast range of a full-power transmitter (1000 watts) over level terrain is approximately 40 miles. The effective range depends on terrain, height and power of the transmitting antenna, quality of the receiver, and whether you use an indoor or outdoor antenna. Sep 07, 2016 · Ready-made receivers are available for working with SAME messages but if you want to add a computer in to the mix, the NOAA weather receiver for the Raspberry Pi has you covered. This add-on board can pick up the NOAA transmissions and decode the SAME packets for you. A speaker is included with the option of a headphone jack instead. NOAA/SWPC Boulder, CO. X-ray photons travel at the speed of light and are the first indication we receive at Earth of solar magnetic eruptions and the associated flares.This feature lets you program your weather receiver to unmute when NOAA issues a subaudible With eHam.net Reviews subscriptions, you can receive all messages posted to a product via email.Nattgew/XP-NOAA-Weather-Plugin. This commit does not belong to any branch on this repository, and may belong to a fork outside of the X-Plane/Resources/plugins/PythonScripts/PI_noaaWeather.py.Seller ships within 5 days after receiving cleared payment- opens in a new window or tab. Estimated delivery date help - opens a layer.Sep 05, 2022 · You should have your own dedicated NOAA or Environment Canada Weather Radio receiver which will alert you 24 hours a day with appropriate audio and/or visual outputs. When seconds may count! The audio may have a buffer delay as long as thirty seconds, plus any provider, network, or local stream delays. The reigning body of weather radios is the National Weather Service , which is part of the National Oceanic and Atmospheric Administration (NOAA).Find many great new & used options and get the best deals for Inovonics 676 INOmni NOAA weather receiver Seller ships within 1 day after receiving cleared payment- opens in a new window or tab.Built-in weather receiver sounds an alarm when your NOAA weather station sends an alert 50-frequency search skip locks out undesired frequenciesI'm building a Raspberry Pi based NOAA weather satellite receiver. I've got some experience with receiving signals from NOAA satellites, but will be a little different, as all of the work is going to be...NOAA Weather Radio NWR; also known as NOAA Weather Radio All Hazards is an automated 24-hour network of VHF FM weather radio stations in the United States (U.S.) that broadcast weather...Sep 24, 2021 · WR400 Deluxe NOAA Weather Radio This radio uses digital S.A.M.E (Specific Area Message Encoding) technology to access your area’s warning system. This provides you with immediate weather updates from the NWS. Midland Radio’s most advanced emergency alert radio allows you to program 25 counties with 80 separate emergency alerts. Si4707 NOAA Weather Receiver/SAME Decoder This board is a new and improved version of the breadboard module that has been on the market for sometime from AIW Industries. New features include: Raspberry Pi B+/2 40 pin header layout Low Noise Amplifier circuit that provides roughly +20dB or more of signal gain Recommend Latest version. Premium unlocked. Clime: NOAA Weather Radar Live Mod Apk Get a powerful yet easy-to-use weather station right on your device with Weather Radar & Alerts.Receiver TFT EBS 760 Series Operating And Service Manual. Receiver TFT 884 Operation And Technical Manual. Fm modulation and stereo monitor (76 pages).$500.01 to $1000.. $14.95 For USA customers (except: AK/HI/PR) Insurance included. Weather Receivers & Weather Stations Many scanners, wideband and specialty receivers also receive NOAA weather broadcasts. Click here for American or Canadian weather station information. Click here for SAME codes by state Bring Your Personal Weather Station to Life. When you share your weather data with PWSWeather, you unlock the ability to archive and visualize long-term trends.The sources:US National Weather Service (NWS), the National Oceanic and Atmospheric Administration (NOAA), the National Centers for Environmental Prediction (NCEP)... outdoor gazebo tent Weather Underground provides local & long-range weather forecasts, weather reports, maps & tropical weather conditions for locations worldwide.NOAA, the National Oceanic and Atmospheric Administration, broadcasts weather reports You can pick up these broadcasts on receivers that are designed to tune into these weather radio...Listen Online NOAA's National Weather Service from United States, no matter where you are. You should have a dedicated NOAA Weather Radio receiver with battery back-up to alert you 24 hours a...Sep 24, 2021 · WR400 Deluxe NOAA Weather Radio This radio uses digital S.A.M.E (Specific Area Message Encoding) technology to access your area’s warning system. This provides you with immediate weather updates from the NWS. Midland Radio’s most advanced emergency alert radio allows you to program 25 counties with 80 separate emergency alerts. Receive weather alert notifications in your area, as well as in your saved locations, wherever you are in Canada. Get your latest forecast information directly from Canada's official weather source.(Redirected from AccuWeather Channel). AccuWeather Inc. is an American media company that provides commercial weather forecasting services worldwide. AccuWeather was founded in 1962 by Joel N. Myers...NWS has evaluated devices carrying the NOAA Weather Radio All Hazards logo for user friendliness and performance capabilities. Residential Grade Radios and Features Prices vary from $20 up, depending on the model. Many receivers have an alarm feature, but some may not. Among the more useful features in a receiver are: [NOAA Scan & Receiver] Always one step ahead of the terrible weather. the NOAA feature automatically scans and receives weather reports from the channel, letting you know when bad...Most NOAA Weather Radio receivers are either battery-operated portables or AC-powered desktop models with battery backup so they can be used in many different situations. Some CB radios, scanners, short wave and AM/FM radios are capable of receiving NOAA Weather Radio transmissions. 6 36 NOAA Weather Receiver The INOmini 636 is a full-featured NOAA weather receiver in a small-format package. It tunes all weather band frequencies and delivers balanced analog and AES digital...4. Clime: NOAA Weather Radar Live (Android, iOS: Free). Now known as Clime, the app formerly known as NOAA Radar Pro continues to stand out from the crowd with real-time radar delivered...Dec 06, 2019 · NOAA Frequency Sequence Channel Assignment This method is popular and the most common. Simply an increasing radio frequency sequence. Your weather radio channel number sequence may follow this method – check your radio’s documentation. 1 = 162.400 Mhz 2 = 162.425 Mhz 3 = 162.450 Mhz 4 = 162.475 Mhz 5 = 162.500 Mhz 6 = 162.525 Mhz 7 = 162.550 Mhz Kaito Emergency Radio Voyager Max KA900 Digital Solar Dynamo Crank Wind Up AM/FM/SW & NOAA Weather Stereo Radio Receiver with Bluetooth, Real-time Alert, MP3 Player, Recorder & Phone Charger, Black 646 3 offers from $99.98 Product Description A department of the U.S. National Oceanic and Atmospheric Administration (NOAA), the National Weather Service You can pick up a simple, battery-powered NWR receiver for under USD $30.Kaito Emergency Radio Voyager Max KA900 Digital Solar Dynamo Crank Wind Up AM/FM/SW & NOAA Weather Stereo Radio Receiver with Bluetooth, Real-time Alert, MP3 Player, Recorder & Phone Charger, Black 646 3 offers from $99.98 Product Description NOAA Weather Radar Live used to be one of our top recommendations because it was so well-designed, and it offered plenty of free data. However, that's changed.Sep 05, 2022 · You should have your own dedicated NOAA or Environment Canada Weather Radio receiver which will alert you 24 hours a day with appropriate audio and/or visual outputs. When seconds may count! The audio may have a buffer delay as long as thirty seconds, plus any provider, network, or local stream delays. Discover our professional weather maps. HD Satellite Weather Radar Rain & Snow Air Quality Wind METAR.Most people buy NOAA weather radios to receive emergency weather bulletins. The receiver gets all the broadcasts in the area and can be programmed for specific SAME codes.The C. Crane CC Pocket can receive NOAA Weather alerts and has rubber sides that provide protection if you drop it, making it suitable for camping and other outdoor uses.This is a World Meteorological Organization (WMO) project to provide a single and centralized source for the media to access official warnings and information issued by National Meteorological and...The weather radio in a cheap windup Eton/Grundig portable (it also tuned TV audio, before DTV) Consumer weather radios avoid the problem by synthesizers, usually part of an IC that is the whole...Nice Midland 7 channel all hazard NOAA weather radio with emergency alerts. Complete with all factory original accessories - Radio with antenna - AC power cable - 12V Car power cable - all...Weather APIs are Application Programming Interfaces that allow you to connect to large databases of weather forecast and historical information. Thanks to APIs and smartphones with built-in GPS...Sep 05, 2022 · You should have your own dedicated NOAA or Environment Canada Weather Radio receiver which will alert you 24 hours a day with appropriate audio and/or visual outputs. When seconds may count! The audio may have a buffer delay as long as thirty seconds, plus any provider, network, or local stream delays. Dispatchers may relay National Weather Service (NWS) alerts, watches, and warnings; but this The NWS operates hundreds of transmitters nationwide in a network called the National Oceanic and...Use our Weather API to access weather forecasts, and historical weather data to power your With our Weather API you can retrieve current weather observations from over 50,000 live weather...Find the most current, accurate and reliable weather forecasts and conditions with The Weather Network.Kaito Emergency Radio Voyager Max KA900 Digital Solar Dynamo Crank Wind Up AM/FM/SW & NOAA Weather Stereo Radio Receiver with Bluetooth, Real-time Alert, MP3 Player, Recorder & Phone Charger, Black 646 3 offers from $99.98 Product Description Kaito Emergency Radio Voyager Max KA900 Digital Solar Dynamo Crank Wind Up AM/FM/SW & NOAA Weather Stereo Radio Receiver with Bluetooth, Real-time Alert, MP3 Player, Recorder & Phone Charger, Black 646 3 offers from $99.98 Product Description NOAA Weather Radar Live used to be one of our top recommendations because it was so well-designed, and it offered plenty of free data. However, that's changed.Home » News & Weather Apps » NOAA Weather Radar & Alerts. Get a powerful yet easy-to-use weather station right on your device with Weather Radar & Alerts.Listen to live "NOAA Weather radio" broadcasts a list of audio streams. The app offers an audio Instead, you should have your own dedicated NOAA Weather Radio receiver which will alert you 24...Here we take a look at decoding weather fax from passing Satellites.Jump straight to software tutorial: 2:15Software here: https://wxtoimgrestored.xyz/downlo... Here we take a look at decoding weather fax from passing Satellites.Jump straight to software tutorial: 2:15Software here: https://wxtoimgrestored.xyz/downlo... What do you need to setup a automatic NOAA APT Weather station configuration. Here is a Link to Automated NOAA weather satellite System In Bassonia South Africa.Seller ships within 5 days after receiving cleared payment- opens in a new window or tab. Estimated delivery date help - opens a layer.Most NOAA Weather Radio receivers are either battery-operated portables or AC-powered desktop models with battery backup so they can be used in many different situations. Some CB radios, scanners, short wave and AM/FM radios are capable of receiving NOAA Weather Radio transmissions. Recommend Latest version. Premium unlocked. Clime: NOAA Weather Radar Live Mod Apk Get a powerful yet easy-to-use weather station right on your device with Weather Radar & Alerts.This is a World Meteorological Organization (WMO) project to provide a single and centralized source for the media to access official warnings and information issued by National Meteorological and...The Weather Channel gives live weather updates, news, radar maps, local temperature, and pollen Weather is liable to change at any time; therefore, it is advisable and handy always to be alerted to...NOAA Weather Radio Promo #1. National Weather Service. The Updated J-15 AM FM Shortwave NOAA Weather Portable Radio is the Perfect Everyday, or Emergency Backup Receiver to ...on NOAA Scales ROC (Receiver Operating Characteristic) curves A ROC curve is a plot of the false alarm rate (also known as probability of false detection or POFD) on the x-axis, versus the hit-rate (also known as probability of detection-yes or PODy) on the y-axis. False Alarm Rate and Hit Rate are defined as: Hit Rate (PODy) = a/ (a+c) Kaito Emergency Radio Voyager Max KA900 Digital Solar Dynamo Crank Wind Up AM/FM/SW & NOAA Weather Stereo Radio Receiver with Bluetooth, Real-time Alert, MP3 Player, Recorder & Phone Charger, Black 646 3 offers from $99.98 Product Description Listen to live "NOAA Weather radio" broadcasts a list of audio streams. The app offers an audio Instead, you should have your own dedicated NOAA Weather Radio receiver which will alert you 24...NOAA Weather Radio broadcasts National Weather Service warnings, watches, forecasts and other hazard NWR requires a special radio receiver or scanner capable of receiving the signal.NOAA Weather Software. NOAA Satellite Receiver; receive_and_process_satellite.sh Add-On; Wxtoimg Restored; Change Serial # For RTL; Change Serial # Using Win10; OP25 Software. Boatbod OP25 Version. Adding A Desktop Icon; Auto Launch OP25 Browser; OP25 Dashboard; OP25 USB Sound Card; Rasp Pi OP25 Phase 1/2; Osmocom OP25 Version. Osmocom OP25 On ... NOAA Weather Radio - Emergency NOAA/AM/FM Battery Operated Portable Radio with Best EXMAX EXD-737 Aviation FM/AM/SW/Band Shortwave Radio Receiver NOAA Weather Radios VHF...NOAA Weather Receiver. Share on Facebook Share on Twitter. The receiver gives front-panel and remote alarm indications for WAT, Low Signal and Audio Loss conditions and delivers both analog...Listen to live "NOAA Weather radio" broadcasts a list of audio streams. The app offers an audio Instead, you should have your own dedicated NOAA Weather Radio receiver which will alert you 24...An NOAA Weather Radio gives you advanced warnings and lets you stay updated on weather changes regardless of your ... Decoding Weather Satellites Using An SDR Receiver NOAA-19.Kaito Emergency Radio Voyager Max KA900 Digital Solar Dynamo Crank Wind Up AM/FM/SW & NOAA Weather Stereo Radio Receiver with Bluetooth, Real-time Alert, MP3 Player, Recorder & Phone Charger, Black 646 3 offers from $99.98 Product Description creative ways to teach the fruit of the spirit [XPGFS] NOAA Weather. XPGFS brings alive the x-plane atmosphere, combining METAR reports and NOAA Weather data for the whole planet.ham radio, Receiver 144 - 146 MHz, Meteosat, Noaa, Meteor, Receiver 137 - 141 MHz, LNC 1691 MHz, actual keplerian elements, short wave 80 metre amateur radio...Instead, you should have your own dedicated NOAA Weather Radio receiver which will alert you 24 hours a day to hazards in your area. The most recent list and status may not reflect...Severe weather warnings are typically accompanied by lots of rain. And when you're out in the wild, seeking dry shelter can be impossible, which is why you need a weather radio that can stand up the...The 14-day weather forecast for the US, hourly weather forecast and current conditions. Weather - 14 days. Today August 30. Tomorrow August 31.on NOAA Scales ROC (Receiver Operating Characteristic) curves A ROC curve is a plot of the false alarm rate (also known as probability of false detection or POFD) on the x-axis, versus the hit-rate (also known as probability of detection-yes or PODy) on the y-axis. False Alarm Rate and Hit Rate are defined as: Hit Rate (PODy) = a/ (a+c) You can also receive weather from weather routers like Chris Parker. A single-sideband receiver is the least expensive way to receive weather, but you must often have an antenna installed to get...Discover our professional weather maps. HD Satellite Weather Radar Rain & Snow Air Quality Wind METAR.Feb 15, 2022 · The Rundown. Best Overall: Midland ER210 Emergency Crank Weather Radio at Amazon. "Packs a lot of functionality into its tiny frame, including solid reception on AM and FM bands." Best Value: RunningSnail Solar Crank NOAA Weather Radio at Amazon. "It’s light enough to pack and forget, with a price point that’s equally approachable." National Oceanic and Atmospheric Administration (NOAA), USA has launched a series of Using this SDR receiver, live weather data of any geographical location can be directly received.Dispatchers may relay National Weather Service (NWS) alerts, watches, and warnings; but this The NWS operates hundreds of transmitters nationwide in a network called the National Oceanic and...In 1954 NOAA Weather Radio first went on the air. The typical NOAA radio receiver hasn't changed much in over a decade. While there is the new S.A.M.E. it is just a small upgrade.Home » News & Weather Apps » NOAA Weather Radar & Alerts. Get a powerful yet easy-to-use weather station right on your device with Weather Radar & Alerts.Our interactive weather maps can be customized to show forecasts of temperature, weather and wind. You can also overlay pressure and live weather observations on maps of any country.The reigning body of weather radios is the National Weather Service , which is part of the National Oceanic and Atmospheric Administration (NOAA).NWS has evaluated devices carrying the NOAA Weather Radio All Hazards logo for user friendliness and performance capabilities. Residential Grade Radios and Features Prices vary from $20 up, depending on the model. Many receivers have an alarm feature, but some may not. Among the more useful features in a receiver are: chowmain control4 drivers NWS has evaluated devices carrying the NOAA Weather Radio All Hazards logo for user friendliness and performance capabilities. Residential Grade Radios and Features Prices vary from $20 up, depending on the model. Many receivers have an alarm feature, but some may not. Among the more useful features in a receiver are: Is the HAARP Project a secret weapon used to achieve weather control and more? Is the HAARP Project a Weather Control Weapon? "It isn't just conspiracy theorists who are concerned about HAARP.Weather radios are designed to receive weather alerts concerning natural disasters such as hurricanes, tornados, storms, and more. The American and Canadian governments are both...Последние твиты от NOAA Weather Android (@noaa_weather). Follow changes and new features for your NOAA Weather Android app.A ROC curve is a plot of the false alarm rate (also known as probability of false detection or POFD) on the x-axis, versus the hit-rate (also known as probability of detection-yes or PODy) on the y-axis. You can read more about creating ROC curves in this presentation, slides 50-53 . Finally, a thorough treatment is presented in a Weather and ... Find the most current, accurate and reliable weather forecasts and conditions with The Weather Network.NOAA Weather Radio app contains many radio stations broadcasting continuous weather information directly from You should have a dedicated NOAA Weather Radio receiver with battery back-up to...NOAA Weather Radio NWR; also known as NOAA Weather Radio All Hazards is an automated 24-hour network of VHF FM weather radio stations in the United States (U.S.) that broadcast weather information directly from a nearby National Weather Service office.Discover our professional weather maps. HD Satellite Weather Radar Rain & Snow Air Quality Wind METAR.PDF | National Oceanic and Atmosphere Administration (NOAA) has a group of manmade This paper describes how this setup provided a cost-efficient solution for receiving NOAA data in local...Hardware 1. PC or something similar. 2. Weather Radio Receiver e.g. Midland WR300 Make sure it either has a 'Line Out' or 'Headphone' output jack. 3. Audio cable from receiver to PC (whatever). Sep 05, 2022 · You should have your own dedicated NOAA or Environment Canada Weather Radio receiver which will alert you 24 hours a day with appropriate audio and/or visual outputs. When seconds may count! The audio may have a buffer delay as long as thirty seconds, plus any provider, network, or local stream delays. Most people buy NOAA weather radios to receive emergency weather bulletins. The receiver gets all the broadcasts in the area and can be programmed for specific SAME codes.Sep 24, 2021 · NOAA broadcasts can be accessed on regular radios, including those found in automobiles. However, these radios may not always be in range of the NOAA frequencies. For more reliable access, it’s recommended that you use a dedicated NOAA radio weather receiver. Some receivers come with a range of valuable features. NOAA Weather Radios range in cost from $25 up to $100 or more, depending on the quality of the receiver and the number of features it has. We also recommend that you get an "EAS-type" programmable Weather Radio receiver for those who wish to receive site-specific as well as warning message element choices. Mar 01, 2018 · the noaa/nesdis high rate information transmission / emergency managers weather information network (hrit/emwin) broadcast can be received using a vsat system with the basic components of a vsat antenna, low-noise block-down converter (lnb), satellite signal receiver, software to de-encapsulate the broadcast stream and some type of visualization … TRANSMITTERS AND RECEIVERS: Bearings reported by a direction nding station ashore must be. NOAA Weather Radio broadcasts are received on one of seven VHF channels listed below.What do you need to setup a automatic NOAA APT Weather station configuration. Here is a Link to Automated NOAA weather satellite System In Bassonia South Africa.NOAA Weather Software. NOAA Satellite Receiver; receive_and_process_satellite.sh Add-On; Wxtoimg Restored; Change Serial # For RTL; Change Serial # Using Win10; OP25 Software. Boatbod OP25 Version. Adding A Desktop Icon; Auto Launch OP25 Browser; OP25 Dashboard; OP25 USB Sound Card; Rasp Pi OP25 Phase 1/2; Osmocom OP25 Version. Osmocom OP25 On ... Feb 15, 2022 · The fully waterproof device receives both AM and FM bands as well as all seven NOAA weather channels and reports, with 20 memory pre-sets (ten on FM, five on AM, and five on Weather), a large LED black-lit screen that’s easy to read from a distance, and a timer function that ranges that will shut off the device after one to 120 minutes of playback. Most people buy NOAA weather radios to receive emergency weather bulletins. The receiver gets all the broadcasts in the area and can be programmed for specific SAME codes.NOAA WEATHER SCAN + ALERT - NOAA Weather Scan will automatically scan through 7 available weather (WX) band Q. What are the features one should look for in a weather radio receiver?Depending on your area of interest, you may program one or more partial county location codes for your receiver. To receive the full benefit of Partial County Alerting, program in the partial county SAME codes for which you wish to be alerted. Remove the full county SAME code (that is, the six digit code beginning with zero). A ROC curve is a plot of the false alarm rate (also known as probability of false detection or POFD) on the x-axis, versus the hit-rate (also known as probability of detection-yes or PODy) on the y-axis. You can read more about creating ROC curves in this presentation, slides 50-53 . Finally, a thorough treatment is presented in a Weather and ... NOAA Weather Radio NWR; also known as NOAA Weather Radio All Hazards is an automated 24-hour network of VHF FM weather radio stations in the United States (U.S.) that broadcast weather...Weather APIs are Application Programming Interfaces that allow you to connect to large databases of weather forecast and historical information. Thanks to APIs and smartphones with built-in GPS...The C. Crane CC Pocket can receive NOAA Weather alerts and has rubber sides that provide protection if you drop it, making it suitable for camping and other outdoor uses.Weather channels are divided into the National Oceanic and Atmospheric Administration (NOAA), which are national, and regional alerts, Specific Area Message Encoding (SAME).NOAA Weather Radio broadcasts National Weather Service warnings, watches, forecasts and other hazard NWR requires a special radio receiver or scanner capable of receiving the signal.The National Oceanic and Atmospheric Administration (NOAA) is a scientific agency that's part of The NOAA weather radio band can be found in standalone receivers designed to receive these...Nattgew/XP-NOAA-Weather-Plugin. This commit does not belong to any branch on this repository, and may belong to a fork outside of the X-Plane/Resources/plugins/PythonScripts/PI_noaaWeather.py.Latest weather conditions and forecasts for the UK and the world. up to 14-days of hourly forecast information, warnings, maps, and the latest editorial analysis and videos from the BBC Weather Centre.Discover our professional weather maps. HD Satellite Weather Radar Rain & Snow Air Quality Wind METAR.Find the most current, accurate and reliable weather forecasts and conditions with The Weather Network.View accurate wind, swell and tide forecasts for any GPS point. Customize forecasts for any offshore location and save them for future use...NOAA WEATHER SCAN + ALERT - NOAA Weather Scan will automatically scan through 7 available weather (WX) band Q. What are the features one should look for in a weather radio receiver?Search This Blog. NOAA weather satellite reception. At the testing stages, I manage to receive APT transmissions from all the active NOAA satellites such as NOAA 15, NOAA 18, and NOAA 19.NOAA, the National Oceanic and Atmospheric Administration, broadcasts weather reports You can pick up these broadcasts on receivers that are designed to tune into these weather radio...Apr 13, 2022 · Raddy RF760 Portable SSB Shortwave Radio Receiver with NOAA Alert, Full Band AM/FM/SW/CB/VHF/UHF/WX/AIR, Battery Operated, Rechargeable Digital Radio with Earphone Jack and 9.7ft Wire Antenna Visit the Radioddity Store 26 ratings | 5 answered questions #1 New Release in Portable Shortwave Radios -9% $9999 List Price: $109.99 & FREE Returns See more While NOAA's National Weather Service staff produce Weather Radio broadcasts, NWS does not sell receivers. Receivers can be found atretail outlets, electronics stores, department stores...Shop for Noaa Radio Receiver at Walmart.com. Save money. Live better Weather XML information in a simple, get local forecast and weather data in XML format by FTP or email at a fast Choose it, pay it and start receiving your chosen weather data in less than1 hour.Nattgew/XP-NOAA-Weather-Plugin. This commit does not belong to any branch on this repository, and may belong to a fork outside of the X-Plane/Resources/plugins/PythonScripts/PI_noaaWeather.py.Weather radios are designed to receive weather alerts concerning natural disasters such as hurricanes, tornados, storms, and more. The American and Canadian governments are both...Sep 07, 2016 · Ready-made receivers are available for working with SAME messages but if you want to add a computer in to the mix, the NOAA weather receiver for the Raspberry Pi has you covered. This add-on board can pick up the NOAA transmissions and decode the SAME packets for you. A speaker is included with the option of a headphone jack instead. Inovonics 676 INOmini NOAA Weather Receiver Visit the INOVONICS Store $89100 A SENSITIVE, DSP-BASED (SDR) RECEIVER FOR THE 162.400 TO 162.550 NORTH AMERICAN WEATHER BAND. FLASHING-RED FRONT-PANEL ALARMS AND REAR-PANEL ‘TALLIES’ FOR WAT (1050HZ TONE), LOW SIGNAL AND AUDIO LOSS. NOAA ANNOUNCES RECIPIENTS OF 2006 ENVIRONMENTAL HERO AWARDS National Award Program Recognizes Individuals, Groups Protecting Environment The National Oceanic and...NOAA/SWPC Boulder, CO. X-ray photons travel at the speed of light and are the first indication we receive at Earth of solar magnetic eruptions and the associated flares.Weather XML information in a simple, get local forecast and weather data in XML format by FTP or email at a fast Choose it, pay it and start receiving your chosen weather data in less than1 hour.Built-in weather receiver sounds an alarm when your NOAA weather station sends an alert 50-frequency search skip locks out undesired frequenciesNOAA Weather Radio allows for access to important weather information across the country 24 hours a Having a way to receive weather alerts is critical to ensuring your safety during an emergency.on NOAA Scales ROC (Receiver Operating Characteristic) curves A ROC curve is a plot of the false alarm rate (also known as probability of false detection or POFD) on the x-axis, versus the hit-rate (also known as probability of detection-yes or PODy) on the y-axis. False Alarm Rate and Hit Rate are defined as: Hit Rate (PODy) = a/ (a+c) NOAA Weather Radios range in cost from $25 up to $100 or more, depending on the quality of the receiver and the number of features it has. We also recommend that you get an "EAS-type" programmable Weather Radio receiver for those who wish to receive site-specific as well as warning message element choices. Receiving NOAA weather satellite imagery with my USB Software Defined RadiosCheck out more of my SDR & Radio videos here: http://youtube.com/mkmeorgSubscribe... Real-time radar images, severe weather alerts, accurate weather forecasts and much more NWS watches, warnings: the US only. Governmental severe weather warnings: Australia, Austria, Belgium...4. Clime: NOAA Weather Radar Live (Android, iOS: Free). Now known as Clime, the app formerly known as NOAA Radar Pro continues to stand out from the crowd with real-time radar delivered...NOAA Weather Radio , on the other hand, continued broadcasting effectively during the crisis. According to Bruce Jones, a weather radio expert and meteorologist with Midland Radio Corporation...Weather-Ready Nation Ambassador™ and NOAA ALL-Hazards Weather Radio™ are trademarks of the You should have your own dedicated NOAA or Environment Canada Weather Radio receiver...Sep 05, 2022 · You should have your own dedicated NOAA or Environment Canada Weather Radio receiver which will alert you 24 hours a day with appropriate audio and/or visual outputs. When seconds may count! The audio may have a buffer delay as long as thirty seconds, plus any provider, network, or local stream delays. Shop for Noaa Radio Receiver at Walmart.com. Save money. Live better I want to find the current weather of a particular city or my location from terminal. Is there any command-line weather app?Prepare for weather surprises with Clime! Check the local forecast for today, view the current weather in multiple locations, and get precise 10-day forecasts.Space Weather Prediction Center. National Oceanic and Atmospheric Administration. NOAA Space Weather Scales. Customer Needs & Requirements Study.A department of the U.S. National Oceanic and Atmospheric Administration (NOAA), the National Weather Service You can pick up a simple, battery-powered NWR receiver for under USD $30.The National Oceanic and Atmospheric Administration (NOAA), an agency NOAA broadcasts continuous weather information, gathered directly from the nearest National Weather Service office...NOAA Weather Software. NOAA Satellite Receiver; receive_and_process_satellite.sh Add-On; Wxtoimg Restored; Change Serial # For RTL; Change Serial # Using Win10; OP25 Software. Boatbod OP25 Version. Adding A Desktop Icon; Auto Launch OP25 Browser; OP25 Dashboard; OP25 USB Sound Card; Rasp Pi OP25 Phase 1/2; Osmocom OP25 Version. Osmocom OP25 On ... Bring Your Personal Weather Station to Life. When you share your weather data with PWSWeather, you unlock the ability to archive and visualize long-term trends.Listen Online NOAA's National Weather Service from United States, no matter where you are. You should have a dedicated NOAA Weather Radio receiver with battery back-up to alert you 24 hours a...National Oceanic and Atmospheric Administration (NOAA), Washington D. C. 644,342 likes · 3,279 talking about this. NOAA is a federal science agency that...Most NOAA Weather Radio receivers are either battery-operated portables or AC-powered desktop models with battery backup so they can be used in many different situations. Some CB radios, scanners, short wave and AM/FM radios are capable of receiving NOAA Weather Radio transmissions. A department of the U.S. National Oceanic and Atmospheric Administration (NOAA), the National Weather Service You can pick up a simple, battery-powered NWR receiver for under USD $30.An inexpensive VHF antenna or scanner antenna mounted near the roof with coaxial or shielded cable to the receiver will provide improved reception for your NOAA Weather radio and allow us to provide you with timely warnings and statements of hazardous weather conditions! Outdoor antennas should be installed carefully! In 1954 NOAA Weather Radio first went on the air. The typical NOAA radio receiver hasn't changed much in over a decade. While there is the new S.A.M.E. it is just a small upgrade.Wind, Wave and Weather Forecasts for Sailors and Adventurers. These sources include the US National Weather Service ( NWS ), the National Oceanic and Atmospheric Administration...The weather radio in a cheap windup Eton/Grundig portable (it also tuned TV audio, before DTV) Consumer weather radios avoid the problem by synthesizers, usually part of an IC that is the whole...Here's a Quick HOWTO from NOAA, and more technical Advanced Info Here But, you say, you've got a really tough situation? See this $40 bad boy. Hardware 1. PC or something similar. 2. Weather Radio Receiver e.g. Midland WR300 Make sure it either has a 'Line Out' or 'Headphone' output jack. 3. Audio cable from receiver to PC (whatever). what is a 1943 bronze penny worthxa