Solar physicist Leif Svalgaard of the W.W. Hansen Experimental Physics Laboratory at Stanford University has predicted a maximum sunspot number of 128 ±10, slightly better than Solar Cycle 24.
“The overall average is 132 ±47 (median 124),” he said. “None of these numbers are substantially different, so one could perhaps just go with the ‘wisdom of the crowd.’ All predictions that we consider have the underlying assumption that the sun has not changed its behavior (its ‘spots,’ so to speak) on a time scale of a few centuries (the Maunder Minimum may be a possible violation of that assumption), and that there will be no such changes in the near future, in spite of speculative suggestions.” Those included one of his own in 2013.
Svalgaard characterized the science of solar cycle prediction to be still in its infancy, “borne out by the extreme range of predictions of Cycle 25.” — Thanks to Frank Donovan, W3LPL
source:ARRL
Antenna
Mechanical Issues with EFHW Antenna
“Rolf, KE1Y, has a EFHW 80 – 10 and it’s wire has broken near the loading coil. He wants to know if there is a better way to have th... Read more
ABBREE VHF UHF “tactical” antenna
ABBREE Another one of those cheap antennas on Amazon, is it any good? ABBREE 1. All of our items are brand new.2. Model: AR-152A3. Connector Type: SMA... Read more
Create CLP-5130-1N VHF/UHF Log-Periodic Antennas – VHF/UHF, 21 Elements, 50-1300 MHz
VHF/UHF Log-Periodic Antenna Antenna, LPDA Type, VHF/UHF, 21 Elements, 50-1300 MHz, 500 W, 50 ohms, 6.66 ft. Boom Length, Type N, Female Create CLP-51... Read more
What size or gauge of wire should I use for an antenna
“A viewer asks: What size of gauge of wire should I use for my portable End Fed Half Wave EFHW antenna. 16 gauge wire seems to be bending my mas... Read more
X-Quad antennas for 2m and 70cm
Photo: EA5FUZ The X-Quad is an improved design of the well known multi element quads. They are especially designed for amateur radio, with the followi... Read more
Review
Elecraft KX2 upgrade kit by RadioSet-GO
Retrofitted KX2 QRP HAM radio transceiver by Hanz, W1JSB of RadioSet-GO. Available May 2018 at http://radioset-go.com Read more
Elecraft KX3 Manual Español and English
El KX3 es un transceptor compacto todo modo, 160-6 metros, que es ideal tanto para los nuevos operadores como para los expertos. Sus características ú... Read more
Review and test of Buddipole Deluxe Antenna
Buddipole Deluxe Antenna Review This is the testing and review of the Buddipole Deluxe antenna available at Buddipole.com. The Buddipole™ Deluxe Packa... Read more
Vintage Tech: The Simpson 260 VOM Volt-Ohm-Milliammeter family
Vintage Tech: The Simpson 260 VOM Volt-Ohm-Milliammeter family Read more
Equipment
AOR AR-7400
New Super Fast Air-band Scanner – AOR AR-7400 Features will include: Simultaneous 4 channel air band receiver. Scan/search all air band in just... Read more
GZV6000 Switching Mode DC Power Supply – 60 Amp
Special Features: • Size: 8.25″ x 4.5″ x 16″ • Weight: 12.8 lbs. • 60 Amp Continuous Rating, 100% Duty Cycle • Variable Voltage Cont... Read more
Ultra portable antenna tower for ham radio 34′
Ultra portable antenna tower Collapsible portable antenna tower. For ham radio, cellular, light, camera, satellite, radio communications etc. FOR SALE... Read more
Introducing the ANAN-8000DLE MKI
ANAN-8000DLE MKII HF & 6M 500W SDR Transceiver Keeping in mind the various requirements posed by new cutting edge technologies implemented in the... Read more
News
Hurricane Ian: Amateur radio used in rescue
Fox News reports a Maryland firefighter used his ham radio to send rescuers to Florida’s Sanibel Island The broadcaster says: Dale Klonin [KC3TA... Read more
RSGB 2022 Convention livestream
We are delighted to bring you our first hybrid Convention this year. We will be livestreaming some of the presentations each day to give you a taste o... Read more
Amateur Radio Operators Continue Response to Ian
As Hurricane Ian, now a tropical storm, makes its way across Florida, amateur radio operators continue to provide communications support for weather u... Read more
Hurricane Watch Net Update for Ian
The Hurricane Watch Net (HWN) has been in operation since the morning of September 27, 2022, as Hurricane Ian swept across Cuba and headed toward Flor... Read more
FCC Grants an ARRL Emergency Request to Permit Higher Data Rate Transmissions for Hurricane Relief Communications
The Federal Communications Commission (FCC) has granted an ARRL emergency request for a 60-day temporary waiver intended to facilitate amate... Read more
![HAM-Toolbox [ APP ]](https://qrznow.com/wp-content/uploads/2022/10/hamclock-1200x997-1.webp)
![FT-710 [ Update Sherwood Table of Receiver Performance ]](https://qrznow.com/wp-content/uploads/2022/10/308890099_5564727106936426_8010060531805418258_n-90x60.jpg)
![FT-710 [ Update Sherwood Table of Receiver Performance ]](https://qrznow.com/wp-content/uploads/2022/10/308890099_5564727106936426_8010060531805418258_n-180x120.jpg)
![XIEGU G106 [ Video Review ]](https://qrznow.com/wp-content/uploads/2022/09/g106-90x60.jpg)
![XIEGU G106 [ Video Review ]](https://qrznow.com/wp-content/uploads/2022/09/g106-180x120.jpg)
