A WATCH for G1 (Minor) geomagnetic storms has been issued for 23 April 2016 due to the anticipated influence of a positive polarity coronal hole high speed.
Source´s: https://solarmonitor.org and
AH-521, is a halo antenna of small size but high performance. Supports an RF level between 140 and 210 W. Covers bands used between 12 and 30 Mhz. le 20, 117, 15, 12 and 10 meters. With remote continuous tuning in a very short time,... Read more