Frank Donovan, W3LPL, says the long-anticipated significant increase in Solar Cycle 25 activity may have begun on April 19.
“As a result, 30- and 20-meter nighttime propagation and 17- and 15-meter daytime propagation is likely to be enhanced through at least April 26. The solar flux index (SFI) is likely to remain at 85 or higher through at least April 26 due to two active regions on the sun’s surface, 2816 and 2817, containing 16 sunspots in all. Two additional active solar regions on the far side of the sun are expected to rotate into view later this week, possibly increasing the SFI and extending enhanced propagation at least through late April.
See Donovan’s article, “What to Expect During the Rising Years of Solar Cycle 25,” in the May 2021 issue of QST.
Check out this CompacTenna dual band ham antenna, only 7.5″ tall and can be used for mobile OR base applications. I also have the CompacTenna Sc... Read more
“After several attempts to build a multiband C-Pole I finally ended up with the Multiband H-Pole. C-Poles for different frequencies on one pole... Read more
Ham Radio Hotspot Read more
Description RT82 is a dual band DMR radio Frequency band:136-174 & 400-480MHz 10000 Contacts IP67 Waterproof Use Time-Division Multiple-Acces... Read more
Automatic antenna tuner specifically designed for IC-705 Read more
Compatible digital radio protocols and networks DMR (BrandMeister, DMRplus, DMR-MARC, Phoenix, XLX, TGIF) D-STAR® (DCS, REF/DPlus, XRF/DExtra, XLX) Sy... Read more
Description: WHAT IS SOFTWARE DEFINED RADIO (SDR)? In traditional hardware radios, the mathematical operations required to decode and proces... Read more
“Nestled deep in the Chequamegon-Nicolet National Forest in Northwest Wisconsin is the small town of Clam Lake. Clam Lake is best known for the... Read more
K4BEN, announces the official beta of his Remote Radio Service, DXRemote.net. It is a very simple concept: his enterprise-class, redundant n... Read more
AMSAT-UK is very happy to announce the 2022 AMSAT-UK International Space Colloquium will be held as part of the RSGB Convention on October 8-9 at the... Read more