POLAR CROWN CORONAL HOLE: A large hole in the sun’s atmosphere has formed around the sun’s north pole. This is called a “polar crown coronal hole,” and it is spewing solar wind into space. This image, based on data from NASA’s Solar Dynamics Observatory, shows where the sun’s magnetic field has opened up, allowing the gaseous material to escape.
Although this hole is not directly facing Earth, forecasters believe that some of the emerging solar wind could spill down and brush against our planet’s magnetic field on Feb. 4th and 5th. Minor geomagnetic storms and Arctic auroras are possible when the solar wind arrives later this weekend.
SX-2000 QRP HF transceiver “”I had in mind for a long time to realize an HF transceiver complete with all the functions of a commercial apparatus. Unfortunately, the time available and not ‘how much and instead of my usual... Read more
DX Engineering Coax Cable Stripping Tools provide a new and easy way to prepare your 50 ohm coax cable for the installation of solder-type PL-2... Read more
Introducing the NEW DXBm™. The Fantom Dynamics team would like to present the new DXBm. Formerly known as the Alianza DxB, our team analyzed all th... Read more
In the 1960s, US Navy officials concocted an ambitious plan: they wanted to bury a gigantic grid of cables under roughly 41 percent of the stat... Read more
Ask any radio monitor what information they consider important during any monitoring session, and usually two items will top their list: frequencies a... Read more
[UPDATED 2018-07-12 @ 1937 UTC — This story corrects some incorrect statements included in an earlier post.] A California man embroiled in a lon... Read more
With just weeks to go until the Youngsters on the Air (YOTA) international event, YOTA South Africa 2018 gets under way. The South African Amateur Rad... Read more
CQ has announced that, effective with 2018 contests, some modifications to the CQ World Wide Contest rules have been developed and approved by the con... Read more
The ARRL Contest Branch has announced that some contest award certificates now are available for download from the ARRL website in PDF and JPEG format... Read more