Solar activity has been fairly boring during the past few days but a surprise solar flare woke us up. A long duration C7.41 solar flare peaked today at 16:32 UTC. Sunspot region 2790 is to blame and that is a sunspot region facing Earth! Long duration solar flares are known to produce coronal mass ejections so the question is… was this an eruptive event?
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The answer to that question is a huge yes! It became quickly apparent that this long duration solar flare would be eruptive. A huge amount of coronal dimming was observed which is an excellent sign that a coronal mass ejection was launched during the event.
Indeed a large coronal mass ejection became visible on STEREO A. We do not have the earth-facing coronagraph imagery yet from SOHO but considering the location of sunspot region 2790 and the extend of the coronal mass ejection on STEREO A we think it is very likely that this coronal mass ejection has an earth-directed component. We will return with more news when the coronagraph imagery from SOHO becomes available.”
Antenna
MFJ 8-Band Cobweb VS Hy-Gain AV680 Comparison
“So many people asked which antenna would I rather have and which one performs better. Well, this is a basic comparison on a day not so g… Read more
Antenna Rotators “ARRL The Doctor is In” podcast. Listen…and learn!
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Jim W6LG Uses A Short Dipole To Demonstrate How A Dipole Functions
Jim makes and then shows his tunable half wavelength dipole antenna. Using an antenna analyzer, Jim finds the resonant frequency and the lowest SWR do… Read more
Building a Multi-Band Dipole
Multi-Band Dipole I built a multiband dipole that will work 40, 20, 17, and 10 meters for ham radio. An easy project I was able to tackle in one day…. Read more
THE TILTED TERMINATED FOLDED DIPOLE – A PRACTICAL BUILDING GUIDE
“THE TILTED TERMINATED FOLDED DIPOLE Recently, I have been experimenting with the Tilted Terminated Folded Dipole, a.k.a. TTFD, a.k.a. T2FD. I… Read more
Review
Book Review: Radio Frequency Interference (RFI) Pocket Guide
“Radio Frequency Interference (RFI) Pocket Guide” by Kenneth Wyatt, WA6TTY and Michael Gruber, W1MG This small 88-page spiral bound (3” x 5”) pocket g… Read more
ZUMSpot RPi Hotspot Review
HRO has an exclusive new ZUMSpot with an LCD screen The ZUMspot RPi is an advanced radio module board. Paired with a Raspberry Pi and the MMDVM soft… Read more
Baofeng UV-5R Extreme Test! – Fire , Water , Freezer
Baofeng UV-5R Hello all! K5CLC here to share a really crazy and extreme field test I did on my year old Baofeng UV5R, to test its merit under the most… Read more
SOTA hike Testing the Xiegu X5105
Xiegu X5105 “I’d climb a mountain for you guys and this time I literally did. We decided to try our hand at Summits On The Air or SOTA. It… Read more
Yaesu FT-991A Unboxing
The FT-991A is the next generation in all mode, all band MF/HF/VHF/UHF transceiver with C4FM (System Fusion) Digital capability. The FT-991A includes… Read more
Equipment
New Hy-gain AR-500
UHF/VHF/6-Meter, MFJ-1886 Rotator/Controller and Remote For use of small VHF/UHF, 6M, TV, FM, the MFJ-1886 wide band receiving loop and other lightwe… Read more
ICOM External speaker SP-41 for IC-7651 and IC-7300
A high-quality external speaker that matches the IC-7610 best. Dual watch ® is also comfortable with input switching . Dual watch can be done comfort… Read more
Alpha 4040 DreamTuner
“In the last 45 days, we’ve made a lot of progress on the Alpha 4040 DreamTuner. As you know, when we tested the tuner under full… Read more
DSP Noise Cancelling Speakers
NOISE CANCELLING SPEAKERS The bhi DESKTOP 10 watt DSP noise cancelling base station speaker will work with most radios, transceivers, receivers, and S… Read more
![PRE-RELEASE INFORMATION – IC 9700 [ ENGLISH ]](https://i0.wp.com/www.nerfd.net/wp-content/uploads/2020/12/icom_ic9700-265x168-1.jpg?w=635&ssl=1)
PRE-RELEASE INFORMATION – IC 9700 [ ENGLISH ]
IC 9700 – 144, 430/440, 1200 MHz ALL MODE TRANSCEIVER Read more
News
The AD-3446 is a new large, full-size antenna for 40, 20, 15 and 10 meters
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Valerie NV9L & Raisa R1BIG: to meet a future spouse in a Ham Contest?
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Launch Window for AMSAT’s RadFxSat-2 / Fox-1E Opens on December 19
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FCC to Require Email Addresses on Applications
Amateur radio licensees and candidates will have to provide the FCC with an email address on applications, effective sometime in mid-2021. If no email… Read more
December is YOTA Month
The month of December has been designated as YOTA month. The annual initiative sponsored by Youngsters on the Air (YOTA) initially focused on Internat… Read more
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