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.
VX-8GR – A Devoted APRS® User Dual Band Version of the VX-8R Series of HandheldKey Features of the VX-8GR include:• Full 5 watts FM 144/430 MHz. • RX 108-999.90 MHz • GPS unit included with... Read more
Yaesu FT-950 HF+6 TRANSCEIVER The FT-950, the newest radio in the direct lineage of the FTDX-9000 and FT-2000 series radios, has been developed to fit the needs of both casual and serious D... Read more
N0KC Wins the January 2017 QST Cover Plaque Award The winning article for the January 2017 QST Cover Plaque award is “A Small, Lightweight Switch-Mode Power Supply” by Ralph J. Crumrine, N0K... Read more
Amateur Radio Emergency Service (ARES) groups in counties along Florida’s east coast are now at a Level 2 (local) activation for Hurricane Matthew. A Level 1 (statewide) declaration is expec... Read more
Have you obtained an Amateur Radio License? Congratulations on your excellent achievement! Now you can proudly display your accomplishment with your own License Class Certificate. Preview th... Read more
Participants in CQ magazine’s Worked All Zones (WAZ) award program will soon be able to use the Logbook of the World (LoTW) system of ARRL, the national association for Amateur Radio, to app... Read more