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NVIS Antenna Test CountyEC Mon, 04/19/2021 - 05:08 Body

Ed, KE8ANU tested out a NVIS antenna at Keckley Park on World Amateur Radio Day.  The video is of the antenna setup and in operation.  

Media NVIS Antenna Test

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ARRL Audio News - April 16, 2021

JS8Call Overview and Settings 2021

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The post JS8Call Overview and Settings 2021 appeared first on QRZ NOW - Ham Radio News.

Tad Cook, K7RA, Seattle, reports: On April 12, new sunspot group AR2814 appeared following 5 days of no sunspots. Daily sunspot numbers on the next 4 days were 16, 16, 17, and 22, taking the average daily sunspot number for the April 8-14 reporting week from 6.4 last week to 7. The April 15 sunspot number of 22 was not included in this average. So far in 2021, 39% of the days had no sunspots.

Geomagnetic indicators were quiet, with average daily planetary A index declining slightly from 6.6 to 5.1. Likewise, middle latitude A index changed from 5.6 to 4.1.

On April 14 Spaceweather.com reported a high-speed stream of solar wind from a hole in the sun’s southern hemisphere. This could produce a minor geomagnetic storm on April 17.

At 2338 UTC on April 14 and again at 0239 UTC on April 16, the Australian Space Forecast Centre issued this Geomagnetic Disturbance Warning: Geomagnetic activity is expected to increase to active levels with a chance of an isolated minor storm period from late on April 16, due to coronal hole effects. The April 16 warning said to expect the effects to continue through Sunday, April 18.

Predicted solar flux is 74 on April 16 – 19; 72 on April 20 – 21; 70 on April 22 – 23; 75 on April 24 – May 8; 72 on May 9 – 17, and 75 on May 18 through the end of the month.

Predicted planetary A index is 18, 20, and 16 on April 16 – 18; 12, 8, 5, and 10 on April 19 – 22; 8 on April 23 – 24; 5 on April 25 – 26; 10 and 8 on April 27 – 28; 5 on April 29 – May 3; 15 on May 4; 5 on May 5 – 7; 8 on May 8; 5 on May 9 – 10; 8 on May 11 – 12; 5 on May 13; 20 on May 14; 8 on May 15 – 16, and 5 on May 17 – 18.

Here’s the geomagnetic activity forecast for April 16 – May 11 from F.K. Janda, OK1HH, who has been compiled this weekly bulletin since January 1978.

The geomagnetic field will be:

• quiet on April 25, May 1-3, 5
• quiet to unsettled on April 26, 28-30, May 6-11
• quiet to active on April 19-20, 23-24
• unsettled to active April 21-22, 27
• active to disturbed April 16-17, (18,) May 4
• Solar wind will intensify on April (16-17,) 18-19, (21-22, then irregularly between April 23-May 1,) May 3-5, (6-7, 10-11)

Parentheses means lower probability of activity enhancement.

Jon Jones, N0JK, reported on April 15: Stations in New England spotted CE2SV and CE3SX (FF46) on 50.313 MHz FT8 ~ 2200 UTC on April 13. Likely a sporadic-E link to transequatorial propagation (TEP). AC4TO (EM70) in Florida reported 18 DX contacts in 10 countries on April 13. Solar flux was 83.

Steve Sacco, NN4X reported: Here in Florida, we saw a late-afternoon opening into Europe on both 10 and 12 meters. Looking west on 10 on FT8, I noticed ZL3IO completing a QSO with CT1ENI, and then calling EA5RW. Note that it’s the middle of the night in EU at 2034 UTC.

Don’t miss this truly remarkable presentation on “HF Ionospheric Propagation” by Frank Donovan, W3LPL, to the Central Arizona DX Association

Universe Today has an article on Galileo sunspot drawings and an application of artificial intelligence.

Here is the April 14 report and forecast from Space Weather Woman Tamitha Skov, WX6SWW.

Sunspot numbers for April 8 – 14 were 0, 0, 0, 0, 16, 16, and 17, with a mean of 7. The 10.7 centimeter flux was 74, 77.8, 70.4, 72.9, 82.8, 72.8, and 74.4, with a mean of 75. Estimated planetary A indices were 5, 3, 5, 6, 5, 5, and 7, with a mean of 5.1. Middle latitude A index was 3, 2, 3, 5, 4, 5, and 7, with a mean of 4.1.

For more information concerning radio propagation, visit the ARRL Technical Information Service, read “What the Numbers Mean…,” and check out K9LA’s Propagation Page.

A propagation bulletin archive is available. For customizable propagation charts, visit the VOACAP Online for Ham Radio website.

Instructions for starting or ending email distribution of ARRL bulletins are on the ARRL website.

Share your reports and observations

SOURCE:ARRL

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The post The K7RA Solar Update appeared first on QRZ NOW - Ham Radio News.

Tad Cook, K7RA, Seattle, reports: On April 12, new sunspot group AR2814 appeared following 5 days of no sunspots. Daily sunspot numbers on the next 4 days were 16, 16, 17, and 22, taking the average daily sunspot number for the April 8-14 reporting week from 6.4 last week to 7. The April 15 sunspot number of 22 was not included in this average. So far in 2021, 39% of the days had no sunspots.

Ge...

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Category: Club Event - Meeting
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NVIS DAY IS ALMOST HERE! CountyEC Thu, 04/15/2021 - 15:25 Body

Your NVIS Day Checklist

C. Matthew Curtin, KD8TTE

NVIS Day is this Saturday, April 24! Are you ready? If your plan is just to operate your NVIS antenna without any specific objectives, you’re not ready. Let’s run down the checklist and get you ready. We’re just under a week away!

Remember the concept with NVIS Day: get everyone operating during the same period of time so there are other participating stations with whom you can exchange signal reports, all for the purpose of understanding how different antennas and configurations work.

We return to the Section Emergency Coordinator column from the March issue of the Ohio Section Journal for the statement of goals.

• Goal 1: Construct a working NVIS antenna (or several) and try them out for performance.

Near-Vertical Incidence Skywave (NVIS) propagation isn’t difficult to achieve. In fact, unless you’ve specifically built your station for DX or otherwise have the antenna up high, that’s probably what you’re using most of the time, at least at frequencies of 5 MHz and lower.

Being an ARES event, NVIS Day is about operating for emergency and public service, which means not only making random contacts, but establishing the ability to make specific contacts. Working on behalf of an agency means you need to communicate with specific stations and nets. If your county EMA can’t effectively exchange messages (whether directly or through a relay net) with the state EMA, the job isn’t getting done, and the ability to talk to the Czech Republic isn’t a consolation prize for the agency’s boss.

Dale Hunt WB6BYU has some excellent information on how NVIS works, and the interplay among the antenna, its configuration (including height), and the critical frequency. As Dale writes, “Successful NVIS operation requires being able to change frequency to suit current conditions, rather than making assumptions and hoping the ionosphere will cooperate.” (D. Hunt, “Near Vertical Incident Skywave (NVIS) Antennas,” Practical Antennas. https://practicalantennas.com/)

• Goal 2: Operate with a completely off-grid power source (battery, solar, generator, whatever)

Do you remember the excellent presentation from Eric Jessen N8AUC about solar power at the Ohio ARES Conference 2019? It’s a good time to watch it again. https://www.youtube.com/watch?

What kind of battery might you use? Terry Russ N8ATZ has written about portable operation, most recently with his HAMMO CAN XL. While it’s a VHF-UHF station, it does need to bring its own power, so there could be some ideas there. (T. Russ. “ARES Rapid Response Equipment Boxes.” Stark County ARES. http://www.wd8aye.net/. See also, B. Darden, “Car and Deep Cycle Battery FAQ,” http://www.batteryfaq.org/)

• Goal 3: Make contact with your district net or DEC on HF (DEC’s make your info known!)

Will your ARES District net be in operation? How will you get a message to your DEC by radio? Your DEC should have published this information by now, and if you don’t know it, contact your EC to get the information! Do not passively wait for someone to do it for you: if you’ve got a station, plan your communication!

Stan added further in the Easter Edition of PostScript that District operations may take place on VHF and even with repeaters.  http://arrl-ohio.org/news/

• Goal 4: Make contact with the Sarge on 3902

This is a goal that gets a lot of practice throughout the year, though through the winter of 2020-21, the net was not in operation, so some HF operators are just getting used to operating there again. The weekly practice in the early evening is great, but with an operation taking place in daylight hours (six hours starting at 10 A.M.), NVIS Day will be quite a bit different as the 75 meter band is sensitive to ionospheric changes throughout the day.

Have you practiced making in-state contacts during hours of operation recently? You’ve got a few days left to get ready. Try OSSBN, which operates a 10:30 A.M. session (NTS Cycle One). The next session is unfortunately not until 4:15 P.M. (NTS Cycle Three), by which time NVIS Day will be over. Nevertheless that session can also help be instructive for comparison of conditions against the morning session. (http://ossbn.org/)

Also, try Buckeye Net, which runs a mixed-mode session at 1 P.M. (NTS Cycle Two). The best band for in-state communication at that time of day has lately been 60 meters, listen for that on Channel 4, and if it’s not here listen on 75 meters. See the Signal Operating Instructions for more information. (https://buckeyenetweb.)

If you haven’t been operating during the day, you definitely want to spend some time preparing. I can tell you that it has been very difficult these past few weeks and especially if you want to use phone mode with sideband you’re going to need to be very patient and might have hours where you struggle to maintain a contact for long.

• Goal 5: Send a message to W8SGT

Messaging is a critical function for ARES. Compose a message for W8SGT with your callsign, the location of your operation, the antenna type(s) you’re using, and how many operators you have. Don’t send it by email!

Radio messaging is what we do, so the question becomes how you’ll get that message to W8SGT. Is your District Net capable of taking and relaying such a message? Your district net should be in operation to do so.

Whether your district net needs relay to get the message to W8SGT or you don’t have one, the district net can send a rep or you can go directly to an Ohio Section net that will be in operation during NVIS Day.

Remember OSSBN? (Yeah, you checked into the 10:30 and maybe 4:15 sessions to get ready for NVIS Day!) Since OSSBN’s morning session will be during the event, you can get that message composed early and maybe handled in the 10:30 net. They’ll want an NTS radiogram to provide accountability for the message and to ensure good relay. If you’re not quite sure how to do it, just say you need help “originating” (use that word) your message to W8SGT and let net control get you some help.

Remember Buckeye Net? (You were also joining that net at the 1 P.M. sessions every day to practice early-afternoon operation before NVIS Day, right?) Buckeye Net is mixed-mode and can take messages in voice, digital, or CW as long as the band is there to support it. Buckeye Net can also take any format for which there is a relay procedure. Try NBEMS digital, FLDIGI, FLMSG, and FLAMP. You can compose your message with FLMSG but save it and try transmitting it with FLAMP, which is more likely to work well on HF even in poor conditions. See the Activation Warning 1 to get an idea of what’s happening and to find the link for coordinating. (https://groups.io/g/QTC/) If you need help originating your message, just say so when you enter the net and net control will give you some help.

OHDEN will be operation for the duration of the event. You can pass digital messages on 3585 to The Sarge. They will have net control operators on duty for NVIS operation.

Check your other options, too. Other nets might be operating for NVIS Day. Check with them to see what they’re doing, and whether they will establish liaison with any of the nets known to be operating during NVIS Day to help get messages relayed to W8SGT. Maybe Winlink will work for you. Simply address your message to W8SGT.  Whatever you’re doing, remember it’s NVIS Day, so using 20 meters to get to a Texas Winlink RMS is better than not using radio at all, but best would be to find an RMS that you can work within about 300 miles of where you are and test out that NVIS antenna!

• Goal 6: Have fun; take a break for the grill and lunch!

Don’t forget to take pictures of your operation and share them. Yes, what we’re doing has a serious purpose and it can be difficult but that doesn’t mean that we don’t enjoy ourselves in the process.

 

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Category: Club Event - Meeting
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Devin, KM4ENW, asks how to ground his 2m/70cm radio in his RV. I show how to use the frame of the RV as a good counterpoise.

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The post How do I Ground My Transceiver in a Recreational Vehicle appeared first on QRZ NOW - Ham Radio News.

The Huntington Library, Art Museum, and Botanical Gardens in San Marino, California, has acquired an archive of papers and correspondence to, from, and about wireless pioneer and Nobel laureate Guglielmo Marconi. Among the more than 200 pages of correspondence are 31 letters from Marconi to his chief engineer, Richard Vyvyan, written between 1902 and 1909, regarding the construction and success...

A 5-year, $9.3 million National Science Foundation (NSF) grant will allow the University of Alaska Fairbanks (UAF) Geophysical Institute to establish a new research observatory at the High-frequency Active Auroral Research Program (HAARP). A former military facility, HAARP is now operated by UAF and is home to HAARP Amateur Radio Club’s KL7ERP. The new Subauroral Geophysical Observatory for Space Physics and Radio Science will be dedicated to exploring Earth’s upper atmosphere and geospace environment. The facility’s 33-acre Ionospheric Research Instrument will be the centerpiece of the observatory.

“This NSF support will provide the scientific community increased access to the instruments at the observatory and, hopefully, grow the scientific community,” said Geophysical Institute Director Robert McCoy, the project’s principal investigator.

A second NSF-funded project will add a Light Detection and Ranging (LiDAR) instrument at the site, which will allow the study of other regions of the upper atmosphere. A LiDAR sends pulses of laser light to determine the composition, temperature, and structure of regions of the upper atmosphere from 90 to 150 kilometers. UAF hopes to add additional instruments over time at the Gakona, Alaska, research site.

The research grant will allow scientists to investigate how the sun affects Earth’s ionosphere and magnetosphere to produce changes in space weather. Their work will help fill gaps in knowledge about the region, which is important because ionospheric disturbances, if severe enough, can disrupt communication systems and damage the power grid.

Research at the observatory is initially expected to include the study of various types of aurora and other occurrences in the ionosphere, which stretches from about 50 to 400 miles above Earth’s surface.

The Gakona facility is a prime location for the study of the ionosphere and magnetosphere because of its location in relation to one of Earth’s magnetic field lines that reaches deep into the magnetosphere, the magnetic field that shields the planet from much of the sun’s plasma energy.

“Amateur radio will clearly benefit with an improved understanding of ionospheric propagation and space weather physics, and providing improved HF propagation prediction modeling data,” HAARP Research Station Chief Engineer and ARRL Life Member Steve Floyd, W4YHD, told ARRL. He said, “Radio science experiments will also provide a valuable data set to encourage development of new radio technologies and modulation methods useful from VLF through HF.”

Floyd is the KL7ERP trustee, which, he says, is available “to demonstrate amateur radio to visiting scientists and students, to maintain contact with Alaska hams, and to provide visiting hams with an opportunity to operate from this unique Alaska location.”

For more than 25 years, UAF, the US Air Force, the US Navy, and the Defense Advanced Research Projects Agency (DARPA) have collaborated on ionospheric research at HAARP. As Air Force funding for research and development decreased, the Air Force transferred the research equipment to UAF under an Education Partnership Agreement (EPA). The UAF Geophysical Institute operates the facility under an agreement with the Air Force.

SOURCE:ARRL

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The post National Science Foundation Funds Creation of Research Lab at Alaska’s HAARP appeared first on QRZ NOW - Ham Radio News.

A 5-year, $9.3 million National Science Foundation (NSF) grant will allow the University of Alaska Fairbanks (UAF) Geophysical Institute to establish a new research observatory at the High-frequency Active Auroral Research Program (HAARP). A former military facility, HAARP is now operated by UAF and is home to HAARP Amateur Radio Club’s KL7ERP. The new Subauroral Geophysical Observatory for Spa...

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The post FTdx10 & FT-991A SSB Receiver Comparison appeared first on QRZ NOW - Ham Radio News.