This high-definition video shows the Sun in the 171-angstrom wavelength of extreme ultraviolet light. It covers a time period of January 2, 2015 to January 28, 2016 at a cadence of one frame every hour, or 24 frames per day. This timelapse is repeated with narration by solar scientist Nicholeen Viall and contains close-ups and annotations. The 171-angstrom light highlights material around 600,000 Kelvin and shows features in the upper transition region and quiet corona of the Sun.
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Marcus, DL8MRE announces that release of SmartSDR for iOS v3.9.12 is now available for download or update from the Apple App Store. SmartSDR is a full featured radio client that enables your... Read more
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“In a few weeks I’m off to the Arctic again, this time to EU-063 Hopen Island, one of Svalbard’s Coastal Island. ETA Hopen Island first week of June for a 6 months s... Read more
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If you’re a new comer to the SDR or SWL hobby then here’s 10 things which will help get you started and choose the right equipment to use, depending on your requirements. Read more
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Antenna, 80 & 40 meter Heavy Duty Vertical, 80m 40m Dual-Band, 5,000 W, 55 ft. Height, HD Pivoting Base, Kit DX Engineering 8040VA-1 Dual-Band THUNDERBOLT® Vertical Antennas are high per... Read more
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“We take Icom’s IC-705 transceiver on a ride with the Harley-Davidson Road King Limited and review it along with Icom’s AL-705 Magnetic Loop antenna and LC-192 backpack, Al... Read more
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International Space Station (ISS) Expedition 50 Commander Shane Kimbrough, KE5HOD, will take one more spacewalk on March 30 before he heads back to Earth in a Soyuz MS-02 vehicle on April 10... Read more
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Yaesu FTM-7250DR C4FM/FM 50W 144/ 430MHz Digital AMS The new Yaesu FTM-7250DR is a compact and ruggedly built C4FM/FM 144/430MHz Dual Band 50W Transceiver and offers the latest advanced fea... Read more
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The ARRL 2017 Annual Report, which highlights the organization’s efforts and activities throughout 2017, is now available. Starting with the cover photo, Amateur Radio’s response to the Atla... Read more
Key Features/Specifications: Type: Aluminium Vertical with Unun matched base Frequency RX: 2.0-90MHz Impedance: 50 Ohms Base connection: SO239 Length: 6m Mast size: 25-42mm https://www.moonr... Read more
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Stop buying equipment, you only need these five things to have a successful ham radio portable operation. Read more
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The American Red Cross (ARC) has asked the ARRL for assistance with relief efforts in Puerto Rico. ARC needs up to 50 radio amateurs that can help record, enter and submit disaster survivor... Read more
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The ANAN-7000DLE MKII monoblock SDR transceiver incorporates an Intel 8th Generation i5/i7 core computer, the SDR client software is preloaded and calibrated making the unit completely Plug... Read more
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This release fixes issues with saving the State and with DX cluster performance issues. 0002817: [Bug] Logbook: crashes when loading world map resource in main frame at startup (K7ZCZ) 000... Read more
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Source:ARRL.org Average daily sunspot numbers over the past week were about the same (59) as last week (54.6), and average daily solar flux declined, from 121.4 to 116.3. Average daily plane... Read more
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Seychelles Polish operators SP6EQZ, SP2EBG, SP2GKS, SP3CYY, SP6FXY, SP6JIU and SP9FOW will be active from Mahe, Seychelles as S79SP between October 3-18, 2015. Accommodation already booked,... Read more
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 of Our Sun in Action){kind=link}