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  2. Long March 4C - Wikipedia

    en.wikipedia.org/wiki/Long_March_4C

    It is launched from the Jiuquan, Taiyuan, and Xichang Satellite Launch Centers, and consists of 3 stages. Long March 4C vehicles have been used to launch the Yaogan-1, Yaogan-3 synthetic-aperture radar (SAR) satellites and the Fengyun-3A polar orbiting meteorological satellite. On 15 December 2009, a Long March 4C was used to launch Yaogan-8. [3]

  3. Long March 3B - Wikipedia

    en.wikipedia.org/wiki/Long_March_3B

    In 1997, the Agila 2 satellite was forced to use onboard propellant to reach its correct orbit because of poor injection accuracy on the part of its Long March 3B launch vehicle. [11] In 2009, a Long March 3B partially failed during launch due to a third stage anomaly, which resulted in the Palapa-D satellite reaching a lower orbit than planned ...

  4. List of Long March launches (2020–2024) - Wikipedia

    en.wikipedia.org/wiki/List_of_Long_March_launches...

    Ludi Tance-1 01A Sun-synchronous: Ministry of Natural Resources: Earth observation: 26 February 2022 23:44 [80] Long March 4C: F-40 Jiuquan SLS-2: Successful Ludi Tance-1 01B Sun-synchronous: Ministry of Natural Resources: Earth observation: 27 February 2022 03:06 [81] [82] Long March 8: F-2 Wenchang LC-2 Successful Dayun (Xingshidai-17) Sun ...

  5. Weather radio - Wikipedia

    en.wikipedia.org/wiki/Weather_radio

    NOAA Weather Radio (NWR; also known as NOAA Weather Radio All Hazards) is an automated 24-hour network of more than 1000 radio stations [20] in the United States that broadcast weather information directly from a nearby National Weather Service office. A complete broadcast cycle lasts about 3 to 8 minutes long, featuring weather forecasts and ...

  6. These Are the Best Emergency Radios to Keep You Updated ...

    www.aol.com/lifestyle/best-emergency-radios-keep...

    The NOAA broadcasts weather warnings and forecasts as the National Weather Radio (NWR) across seven public radio frequencies: 62.400 megahertz, 162.425 MHz, 162.450 MHz, 162.475 MHz, 162.500 MHz ...

  7. Automatic picture transmission - Wikipedia

    en.wikipedia.org/wiki/Automatic_Picture_Transmission

    The Automatic Picture Transmission (APT) system is an analog image transmission system developed for use on weather satellites.It was introduced in the 1960s and over four decades has provided image data to relatively low-cost user stations at locations in most countries of the world.

  8. Specific Area Message Encoding - Wikipedia

    en.wikipedia.org/wiki/Specific_Area_Message_Encoding

    Specific Area Message Encoding (SAME) is a protocol used for framing and classification of broadcasting emergency warning messages. It was developed by the United States National Weather Service for use on its NOAA Weather Radio (NWR) network, and was later adopted by the Federal Communications Commission for the Emergency Alert System, then subsequently by Environment Canada for use on its ...

  9. ETSI Satellite Digital Radio - Wikipedia

    en.wikipedia.org/wiki/ETSI_Satellite_Digital_Radio

    ETSI Satellite Digital Radio (SDR or ETSI SDR) describes a standard of satellite digital radio. It is an activity of the European standardisation organisation ETSI . It addresses systems where a satellite broadcast directly to mobile and handheld receivers in L band or S band and is complemented by terrestrial transmitters.