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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The FCC has opened a brief window for public comment on recommendations approved by the World Radiocommunication Conference Advisory Committee (WAC). Comments are due March 18 on Internation... Read more
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Nobuaki, JA0JHQ will be active from Nepal 16 – 20 June 2016 as 9N7NH. He will operate on 40, 30, 20, 17, 15, 6m CW, SSB, RTTY, inluding activity in All Asian CW Contest. QSL via home c... Read more
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Amateur Radio volunteers are providing communication support to American Red Cross shelters in Sevier County, Tennessee. Wind-driven flames and embers from the Chimney Top Fire in Great Smok... Read more
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Marko, N5ZO will be active from Praia de Bilene, Mozambique as C92ZO between November 22 to December 1, 2015. QRV primarily during CQ WW CW contest, but also active on HF (including WARC) ba... Read more
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ARRL has announced its 2017 Teachers Institute on Wireless Technology schedule. This summer’s sessions will be held in Dayton, Ohio — hosted by the Dayton Amateur Radio Association (DARA) —... Read more
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It took nearly 20 years, but AMSAT Vice President of Operations Drew Glasbrenner, KO4MA, finally qualified for Satellite DXCC. Glasbrenner submitted the requisite number of QSLs for checking... Read more
Video introduction from Icom Inc. to the IC-SAT100 which is Icom’s first Satellite PTT handheld radio that uses the Iridium satellite communication network. Unlike satellite phones, the IC-S... Read more
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BaoFeng BF-UVS9 Product Features Brand:BAOFENG Type of radio:Portable SKU:Baofeng BF-UVS9 walkie talkie Frequency Range:VHF 136-174 MHz UHF 400-520MHz Storage Channel:128 Display:Yes Type:Tw... Read more
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Steve (K9AN) and I have developed a potential new mode for WSJT-X. We’re calling the mode “FT8” (Franke-Taylor design, 8-FSK modulation). FT8 is designed for situations like multi-hop Es wh... Read more
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DX News — ARRL DX Bulletin #7 ZCZC AE07 QST de W1AW DX Bulletin 7 ARLD007 >From ARRL Headquarters Newington CT February 19, 2015 To all radio amateurs SB DX ARL ARLD007 ARL... Read more
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Sunset at the PJ2T station! Photo from Gene KB7Q ARRL Radiosport and Field Services Manager Bart Jahnke, W9JJ, has announced that through the yeoman efforts of Charlie Carroll, K1XX; Kelly T... Read more
Amateur Radio Emergency Service Manual The latest edition (March 2015) of the Amateur Radio Emergency Service® (ARES) Manual now is online. This edition includes various Incident Comm... Read more
CHAMELEON ANTENNA EMCOMM-III Portable HF Antenna is specially designed for short to long range portable and man-pack HF communications. The EMCOMM III Portable antenna is ideal for hiking, b... Read more
The FCC has denied the petition of an Arizona radio amateur, who had petitioned for lifetime Amateur Radio licenses. Mark F. Krotz, N7MK, of Mesa, had filed hisPetition for Rule Making (RM 1... Read more
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“Our station located in a very beautiful place on the shore of a local “sea” (man made lake) in Siberia. The city name is Berdsk . It’s a satelite of a large c... Read more
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