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
80M Antenna with HOA Constraints
Welcome to the 400th Ask Dave video! Ken, VE7ZY, is having trouble with an 80m dipole mounted very closely to the roof flashing. He is seeking other a... Read more
Can I Put One End of a Dipole Next to my VHF Antenna?
Nick, KC3PWJ, has a flagpole and also a pole that holds up his VHF/UHF discone. He’d like to string a 20m dipole between the two poles, but is w... Read more
Wideband Antennas for SDR Radios
Flip, W4FLP, asked about options for wideband antennas for the popular RSP-DX software defined radio from SDRPlay. We cover three that should work fin... Read more
Bushcomm Horizon Multi-Band Loop Antennas LOOP-20
Antenna, Loop, Magnetic, 20-10M, 125 W PEP, Each Magnetic- loop antennas have existed almost since radio began. The recent resurgence of interest in t... Read more
Chameleon EmComm II Amateur Ham Radio Antenna Review
A slightly different form of hybrid is the Chameleon Emcomm II.The Emcomm II is a portable antenna, which can also be very good to use as a base stati... Read more
Review
TOP 10 ACCESSORIES FOR IC-705
This week Jonathan goes through his top 10 must-have accessories for the IC-705! Read more
Traditional Amateur Radio Contesting Faces a Demographic Cliff
Frank Howell, K4FMH, followed up his two-part National Contest Journal (NCJ) series, “The Demographics of Contesting,” with a post to his Social Circu... Read more
Yaesu FTDX-10 Menu and Feature Overview with W9FFF Ham Radio Dude
New from Yaesu, the FTDX-10 HF Transceiver – today I’ve invited Sean, W9FFF, from the Ham Radio Dude channel to go though all of the menu... Read more
Renewing Your Amateur Radio License thru FCC Universal Licensing System
Renewing Your Amateur Radio License thru FCC Universal Licensing System Read more
NanoVNA-H4 Network Analyzer, $86 Antenna Analyzer Review/Demo
Today we are checking out the NanoVNA-H4 analyzer. This little gem does a lot more than just SWR, so check out this video and other videos on YouTube... Read more
News
March 2021 Volunteer Monitor Program Report
The Volunteer Monitor (VM) Program is a joint initiative between ARRL and the FCC to enhance compliance in the Amateur Radio Service. This is the Marc... Read more
ARISS USA Gets IRS 501(c)(3) Recognition
ARISS-USA, a Maryland nonprofit corporation, has earned recognition from the US Internal Revenue Service (IRS) as a Section 501(c)(3) charitable, scie... Read more
Contests on QO-100 allowed
Updated band plan valid: from 4 April 2021 Contest Zone (CW and SSB) Uplink area 2400.370 – 2400.490 MHz Downlink area 10489.870 – 10489.990 MHz Of co... Read more
How to use an automatic antenna tuner with a Yaesu FT-891 (LDG Z11 Pro II)
How to use an automatic antenna tuner with the Yaesu FT-891. In this video I show you the steps to set up and configure the LDG Z11 Pro II auto tuner... Read more
Online Comm Academy 2021 is set for April 10 – 11
The 2021 Comm Academy April 10 – 11 is 2 days of training, talks, and information on emergency communications and amateur radio. This year’... Read more
VHF
Wouxun REVEALS the KG-UV8H Dual Band 8-watt HT Radio
Brand new from Wouxun is the KG-UV8H Handheld, which features a different screen than earlier models, an 8-watt output power, and a 3200mAH battery. L... Read more
Amateur Radio Gets a Partial Reprieve on 3.5 GHz
Pending future FCC action, amateur radio secondary use of the 3.3 – 3.45 GHz band segment may continue indefinitely. The FCC, as part of a lengthy... Read more
Dump the UV-5R and Get the GT-5R
“For years the Baofeng UV-5R has been maligned as non-compliant with FCC regulations and a real spreader of spurious emissions. Further, it woul... Read more
Best Handheld Ham Radio Under $150 – 2021
“In early 2021, these are my recommendations of the Best Handheld Ham Radios under $150.” Read more
ANYTONE AT-779UV – Dual Band Mini Mobile Radio
The Anytone AT-779UV Dual band Mobile radio is a compact rugged 25 watt mobile radio Factory pre-programmed with the Moonraker code plug including all... Read more