NOAA’s Space Weather Prediction Center (SWPC) reports that geomagnetic storm watches are in effect through December 11, due to the effects of a direct coronal mass ejection (CME) collision with the Earth’s magnetosphere from December 9 until December 11. The CME eruption was associated with a C7 solar flare erupting from Sunspot Region 2790 on December 7.
Arrival of a shock wave associated with the CME is possible late on December 9, initially resulting in a G1 (minor) geomagnetic storm. As CME effects continue, geomagnetic disturbance is likely to increase, especially if the magnetic field carried with the CME rotates to a southward orientation, causing magnetic reconnection with Earth’s opposite polarity magnetosphere. The potential for stronger storm levels exists, and a G3 (strong) geomagnetic storm level watch is in effect for December 10. A G3 storm level can result in intermittent HF radio conditions, with the possibility of aurora borealis appearing as far south as Illinois and Oregon.
CME-related geomagnetic disturbances are forecast to continue through December 11, likely resulting in G2 (moderate) geomagnetic storm levels; another geomagnetic storm watch has been issued accordingly. In a G2 storm, HF radio propagation can fade at higher latitudes, and aurora has been seen as far south as New York and Idaho.
While SWPC forecasters are fairly confident that the CME will arrive at Earth, the timing and geomagnetic storm intensity are less certain. Visit the SWPC Current Space Weather Conditions web page for updates. (See also www.solarham.net/geo_forecast.htm and www.swpc.noaa.gov/products/wsa-enlil-solar-wind-prediction.)
SOURCE:ARRL
Antenna
Building 2 Meter Vertical Moxon
Building a 2-Meter Moxon by Stephen Dunifer Source´S : http://www.moxonantennaproject.com/ and VE3STL Read more
Cushcraft R-6000 Vertical Multiband 6,10,12,15,17,20m
Cushcraft The Cushcraft R6000 is a 6 through 20 meter, no ground radial antenna. It includes manyof the features of the R8, R7 and R5 antennas.... Read more
YouLoop HF loop antenna
HF loop antenna HF Portable & Flexible Receive Loop Antenna Covers HF frequencies (10 kHz to 30 MHz) Usable on VHF up to 300 MHz as a folded Dipol... Read more
Vehicular HF Antenna Base 1.8 – 54MHz
The CHA HYBRID Base is designed to enhance the capabilities of the common HF radio application by allowing faster tuning operation across the HF bands... Read more
Comet mobile antenna of 430MHz band – ASF-430
Comet is the 19th Kansai first exhibition was of the amateur radio festival venue, fin-type mobile antenna · ASF-430 of 430MHz band. Adopted wa... Read more
Review
RFinder B1 Interview from Orlando Hamcation 2020
“RFinder B1 at Orlando Hamcation of 2020 – I was privileged to spend lots of time with the nice folks from RFinder at the Hamcation this y... Read more
MFJ Big Ear Portable Dipole Review – K6UDA Radio Episode 25
“I’m reviewing the new MFJ-2289 Big Ear Portable rotatable dipole antenna this week. I’ve switched things up just a bit and I’... Read more
How to Find Online Ham Radio Exams
How to Find Online Ham Radio Exams Read more
YAESU FTDX10 [ VIDEO ]
YAESU FTDX10 Read more
Yaesu FT-818 – Unboxing [ Video ]
The new FT-818 incorporates all the many basic and attractive features of the ever-popular FT-817ND while providing upgrades desired by many existing... Read more
Equipment
Ailunce HS1 HF SDR HAM Transceiver
Ailunce HS1 Description: Spectrum Dynamic Waterfall Display Multiple Working Modes:Receive Mode, Transmit Mode, TUNE Mode, VFO Mode, SPLIT Mode DSP Di... Read more
Radiosport RS60CF Deluxe Headset
Radiosport RS60CF deluxe “dream” edition Headset – $289.00 Stereo headset supports Dual-Watch/Dual-Receive rigs, 24dB Noise Reductio... Read more
Yaesu FT-DX101D/MP [ English Brochure ]
Yaesu FT-DX101D/MP The new FTDX101D is utilizing the latest SDR Technology and classified as our High-End HF line, the FTDX series, which amateurs hav... Read more
DV4mobile – first all mode digital tri band transceiver plus LTE with GPS
V4mobile – first all mode digital tri band transceiver plus LTE with GPS The DV4mobile supports all digital modes: no need for multiple r... Read more
ICOM LC-192 for IC-705
Making your field operation more fun and convenient with the LC-192, the IC-705’s utility backpack. The IC-705 fits perfectly in the optional LC-192 m... Read more
News
Amateur & Personal Radio Users Reminded Not to Use Radios in Crimes
Full Title: Warning: Amateur and Personal Radio Services Licensees and Operators May Not Use Radio Equipment to Commit or Facilitate Criminal Act... Read more
SL8SUB – 1st Submarine Flotillas official military amateur radio call sign
Here is a brief information release regarding Radio SL8SUB, the 1st Submarine Flotillas official military amateur radio call sign: The 1st Submarine F... Read more
Smoother FT8 Mode Operation with Constantly Evolving Firmware (IC-705/IC-7300/IC-9700)
Firmware update for the IC-705, IC-7300 and IC-9700* offers smoother FT8 operation. One touch FT8 mode preset, Scroll mode and other updates for each... Read more
Hamvention 2021 is Officially Cancelled
Much like last year, Hamvention 2021 has announced their cancellation of the Hamfest for 2021. Lots of us are disappointed, but I wanted to share my t... Read more
Dayton Hamvention Cancels 2021 Show
Dayton Hamvention® will not take place for the second year. “Unfortunately, several setbacks in the recovery from the COVID-19 pandemic make necessary... Read more