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.
The ARRL Headquarters Emergency Response Team will activate on Wednesday, September 12, ARRL Emergency Response Manager Mike Corey, KI1U, has announced. The team already has taken some steps... Read more
The deadline to submit nominations for these five ARRL awards that recognize educational and technological pursuits in Amateur Radio is just 2 weeks away. Nominations are also open for the L... Read more
IC-R30 Communications Receiver (Handheld) After an online teaser campaign featuring silhouettes of mystery radio models, the secret is out and Icom Inc. has shown the very first samples of t... Read more
Baofeng UV9R Plus Product parameters Frequency Range: VHF 136-174,UHF 400-520MHz Theoretical communication distance: 10 km Power: 15W Battery: Polymer lithium battery Battery: 8000 mAh Weigh... Read more
Source:Manchester University The assessment of the impact of solar activity on radio signals in the atmosphere has been boosted by a new measurement method, report scientists. An innovative... Read more