THE SPARK GAP

A monthly publication of the Meridian Amateur Radio Club April 2026

 

Jesus Has Risen

 

 Bible Verse

Matthew 28:5-8 --- The angel said to the women, "Do not be afraid, for I know that you are looking for Jesus, who was crucified. He is not here; he has risen, just as he said. Come and see the place where he lay. Then go quickly and tell his disciples: 'He has risen from the dead and is going ahead of you into Galilee. There you will see him.' Now I have told you." So the women hurried away from the tomb, afraid yet filled with joy, and ran to tell his disciples. (NIV)

 

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President's Report

For our upcoming meeting on 11 April 26, we will again accept the hospitality of the Suqualena Fire & Rescue department and hold this scheduled meeting at their fire house beginning at 0900 hrs. At this meeting we will have a visiting speaker, Mike Hartman, K4MR who will present an informative program on tower safety. Mike is from L.A. “Lower Alabama” and is a member of the Mobile ARC. He was invited to be with us by his friend Larry Anderson, K5LDA. We look forward to welcoming Mike and hearing his presentation. You do not have to be a member of the MARC to be welcome at any of the meetings and activities of this club.

Again, this year, our club has been honored with an invitation to participate in the annual Collinsville Day by the Collinsville Fire & Rescue Department. This is on Saturday 2 May 26, we will set up and occupy a booth there. We have plans to demonstrate our radios and antennas operating on the air in a very visible location during this event. Larry Anderson advises that the FCC has granted call sign W5C for this special event.

Besides the upcoming Collinsville Day special event, we will on June 27-28, along with the Quitman ARC, participate in the National ARRL Field Day. Our local Field Day event for the two clubs will be conducted at the Archusa Water Park, Quitman, MS on those two days.

Support your local Meridian Amateur Radio Club by attending the monthly meetings and our various events; visitors are always welcome. The club’s regular meeting schedule is the first Monday each month, 9:00 am, except when there is a holiday or area Hamfest which conflicts. Meeting locations and schedules are announced by email in the Spark Gap.

This report is submitted at the request of MARC President Wayne Myhre, KC5HPU who is out of town.

Buford Rochester, KI5HCM
MARC Vice-President

 

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Next MARC Business Meeting

IMPORTANT NOTE: MEETING TIME AND LOCATION

DUE TO 1ST SATURDAY BEING EASTER WEEKEND,
THE MARC BUSINESS MEETING HAS BEEN MOVED TO THE 2ND SATURDAY, APRIL 11TH

We're a go for the program on Tower safety. Our guest speaker is Mike Hartman, K4MR. He lives in Semmes, Alabama, a suburb of Mobile. Mike had been a ham for many years and is very skilled in electrical and electronics and all things ham radio. I know you will enjoy his program on towers.

The next business meeting will be held at Suqualena Volunteer Fire Department, 10432 Highway 494 (just off of Hwy 19 - north of Meridian) from 9am until... on Saturday April 11th.

 

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The 23rd Mississippi QSO Party is just ahead !!!

The MSQP rules and operating helps are on www. arrlmiss. org under the MSQP Tab.

Several Mississippi Clubs as well as individuals have planning under way for April 4-5 to conduct portable/mobile operations from rare counties. The county hunters will be out in force looking for these stations.

In addition, multiple Mississippi Home stations will be on the air.

The planned activity is shown on the Mississippi County Map on the Website (www. arrlmiss. org).

To get to the map click on the MSQP Tab. Then click on ‘Planned Activity Map.’ The highlighted counties indicate that there will be activity from that county.

You can then click on a highlighted county to find out who has signed up to operate from that county.

Questions to w5xx@arrl.net.

See you on the air during the MSQP!

Best 73 de W5XX

 

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Upcoming HamFest

Memphis Freefest (Delta ARC) April 11, 2026 - Agricenter International, 7777 Walnut Grove Road, Memphis, Tennessee 38120

Mobile ARC W4AIX Hamfest April 18, 2026 - 8:00am to 2:00pm - Mobile Fairgrounds, 1035 Cody Road N. Mobile, Alabama 36601

Wiregrass ARC Spring Tailgate April 25, 2026 - Park Street, Headland, Alabama 36345

 

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WHY SOLAR REPORT?

THIS IS A GOOD ARTICLE EXPLAINING WHY HAM RADIO OPERATORS SHOULD PAY ATTENTION TO DAILY SOLAR ACTIVITY.
Full article: https://www.ico-optics.org/solar-cycle-influence-on-hf-radio-communication/

This is a brief summary below:

Solar Cycle Influence on HF Radio Communication: Key Impacts & Insights By ICO Optics

 

Tech Insights: Navigating the Solar Cycle for HF Radio


As the Sun moves through its natural 11-year cycle, its magnetic activity creates a shifting landscape for high-frequency (HF) radio communication. Understanding these atmospheric changes is the key to maintaining clear, long-distance links.
The Science of Skywaves


HF communication (3–30 MHz) relies on skywave propagation, where signals bounce off the ionosphere to travel beyond the horizon. This process is driven by solar radiation, which ionizes the upper atmosphere into layers (D, E, and F).

  • The F Layer: The primary "mirror" for long-distance daytime and nighttime signals.
  • The D Layer: A lower altitude layer that absorbs signals during the day, often weakening lower-frequency communications.

Solar Maximum vs. Solar Minimum
The phase of the solar cycle determines which bands will be most effective:

  • Solar Maximum (Peak Activity): High sunspot counts and solar flux lead to intense ionization. This opens up higher bands like 10m, 12m, and 15m for worldwide communication with minimal power. However, this phase also increases the risk of solar flares that can cause sudden blackouts.
  • Solar Minimum (Quiet Period): With fewer sunspots, the Maximum Usable Frequency (MUF) drops. Long-distance operators typically shift to lower bands like 40m and 80m, particularly after sunset when the D-layer fades.

Managing Solar Disturbances
Space weather can disrupt even the best setups. Sudden Ionospheric Disturbances (SIDs) from solar flares can wipe out signals on the sunlit side of Earth within minutes. Additionally, Coronal Mass Ejections (CMEs) can trigger geomagnetic storms, leading to increased signal fading and noise.

Pro-Tips for Operators

  1. Monitor the Indices: Keep an eye on the Solar Flux Index (SFI) for propagation potential and the K-index to gauge geomagnetic noise levels.
  2. Choose the Right Mode: When conditions are weak or unstable, digital modes like FT8 can often maintain a connection where voice modes might fail.
  3. Frequency Agility: Be prepared to shift bands as the sun rises or sets. Lower frequencies generally perform better at night, while higher frequencies shine during peak daylight hours of a solar maximum.

 

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Quote of the Month

"Our spring has come at last with the soft laughter of April suns and shadow of April showers." – Byron Caldwell Smith

 

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Have a BLESSED month!

 

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