Today, there are two sunspots in the sun’s southern hemisphere. Their magnetic polarity reveals something interesting: They come from different solar cycles. Take a look at this magnetic map of the sun’s surface (with sunspots inset) from NASA’s Solar Dynamics Observatory:
One sunspot (AR2760) belongs to old Solar Cycle 24, while the other (AR2761) belongs to new Solar Cycle 25. We know this because of Hale’s polarity law. AR2760 is +/- while AR2761 is -/+, reversed signs that mark them as belonging to different cycles
Source:https://spaceweather.com/
Antenna
FX700 Vector Network Analyzer
Metropwr FX700 is a vector network analyzer 0.1/700 MHz used to measure all the parameters of an antenna. It has a large 4.3 “touch screen display and... Read more
How to Attach Radials to a Radial Plate
“Jeff, AC2AU has a straight-forward question, How exactly do I attach radials to a commercial vertical antenna? Dave will answer this question a... Read more
Comet HFJ-350M 160m-5m – Antenna Review
A pocket size antenna that covers all HF bands. Ideal for IC-705 COMET HFJ-350M TOY BOX 10-Band 1.8-50MHz portable Antenna with carrying pouch I... Read more
Fan Dipoles
Bob Carver, KB0XT, wants to know how close he can put his dipoles or if he can even combine them? Yes! He can. Watch to learn all about Fan Dipoles Read more
How close can Antennas be?
Bpb, KC1MOF, is setting up his second antenna, a mfj 1846 hex beam, and wants to know if his hustler 4btv may be too close, and if the two antennas ma... Read more
Review
Can RG8X Really Handle 1500 Watts?
Using a linear amplifier Jim W6LG tests a 100 foot length of RG8X to see if it can handle 1500 watts by measuring the temperature of the jacket. You m... Read more
RigExpert AA-2000 | Best Ham Radio Antenna Analyzer?
“Today I get to tell you about the AA-2000 Antenna Analyzer from RigExpert in the Ukraine. This is the Best Ham Radio Antenna Analyzer that I ha... Read more
Pluto Plus SDR – An Adalm Pluto Upgrade?
Here we take a look at the Pluto+ which has all the features the original Adalm Pluto should of had. Description: Pluto+ is a software-defined radio p... Read more
Why We don’t look at Single Side Band in the Time Domain
Dave Casler here to help show and explain why we don’t look at the Time Domain when using Single Side Bands. Read more
Where to Tap the Icom 7300 for your SDR Radio
Bill Whittaker, KO4IOE, asks where, when, and how Dave tapped his Icom 7300 to his SDR Radio, and how he should tap his. Read more
News
Family Comes First during Hurricane Preparation for Home and Station
The Atlantic hurricane season began on June 1 and continues through November 30, and two named storms have already shown up, although neither threaten... Read more
Ham Radio in Games
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International Space Station to be in Cross-Band Repeater Mode for Field Day
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New IARU-R1 HF band plan released
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ISS SSTV 145.800 FM June 9-10
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VHF
Baofeng UV-10R Dual Band HT Ham Radio – First Look!
Today I go over the features and do some power testing on the Baofeng UV-10R Dual Band HT Ham Radio Specification: Brand Baofeng Power 10W Frequency V... Read more
ISS repeater remaining on until after Field Day
The International Space Station crossband FM repeater should remain active until after the Field Day weekend of June 26-27. Amateur Radio on the Inter... Read more
Changes to the RSGB 50MHz awards
The RSGB Awards Manager has reviewed the current 50MHz awards offered by the Society and concluded that the existing 50MHz 2-Way Countries a... Read more
Over 50 km on 481 THz! Great news from SP
On May 8, 2021, the group of Polish radio amateurs: Marek SP4ELF, Jurek SP2GUB, Adam SQ2DOL, Piotr SQ4MIK, and Jarek SQ4IOB realized optical communica... Read more
Anytone AT-D878UVII Plus – Best DMR Handheld Ham Radio 2021?
The newest DMR Handheld Ham Radio from Anytone is the AT-D878UVII Plus HT, which incorporates 500,000 contacts and 10,000 talkgroups into the same, gr... Read more