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.
A group of Portuguese amateur radio enthusiasts are spending their own vacation time trying to identify the location of a series of GPS buoy clusters that are transmitting, illegally and for... Read more
7 elements full size arranged on a single boom, divided into 2 parts for 20 m, 2 elements for 15m and 3 elements for 10m in spotlight radiator configuration and reflector-radiator-director.... Read more
Stories you’ll find in our November, 2015 issue: TSM Reviews: Electraft K3s—Another Step Forward By Mark Haverstock K8MSH If you already have a K3, you know you have one of the best, full-fe... Read more
A strong 7.9 magnitude earthquake struck the South Island of New Zealand at 1103UTC 13 November ( just after Midnight local time ) causing damage and local tsunami alerts, mainly for the Eas... Read more
DX Alert App Instead of being connected to a DX cluster directly you can use DX Alert to monitor the cluster for you and get notifications on your phone or tablet when a DX is spotted that m... Read more
The FCC has announced that its large-scale website redesign will be completed by December 10. The switch to the new site is set to begin on December 10 at 0100 UTC and will be completed abou... Read more