Author Archive | GEARS Technographer

Exciting Program at next Friday’s meeting!

Digital Based Solutions for Declining Propagation Environments

GEARS Special Program Friday July 21, 2017 – 7 PM

Presented by:
John Bush – KH6DLK / V63JB
Yap, Federated States of Micronesia

GEARS is very pleased to welcome Extra Class licensee John Bush, visiting from Yap, Micronesia. John will present digital based solutions to counter reduced radio wave propagation due to current, unfavorable, solar activity.

John’s informative and interesting talk will address:

  • How the declination in propagation requires hams to rethink how we’ll communicate in the future.
  • What communications options are available to counter adverse solar activity.
  • Useful digital modes.
  • Operating digital with VHF, UHF, and repeaters.
  • Helpful criteria for picking a digital mode.
  • The importance of ARQ (automatic repeat request) and FEC (forward error correction) in high accuracy digital modes.
  • An overview of some of the more popular modes.
  • Pros and cons of the these modes.
  • Practical tips on building a digital station.

And much more.

All hams, and non-hams, are welcome!

Golden Empire Amateur Radio Society
Butte County Search and Rescue Building
3965 Morrow Lane
Chico, CA 95926

For additional information email:

Sunspot AR2665 — News to Know

SOLAR FLARE AND RADIO BLACKOUT: Sunspot AR2665 has grown into a behemoth almost as wide as the planet Jupiter: movie. Stretching more than 125,000 km from end to end and containing dozens of dark cores, the active region is an now easy target for backyard solar telescopes. Amateur astronomer Peter Desypris sends this July 9th photo from Syros island, Greece:

“This is the biggest sunspot of 2017 so far,” says Desypris. “I photographed it using an 8’inch LX200 telescope and a safe solar filter.”

On July 9th at 0318 UT the big sunspot erupted, producing an M1.3-class solar flare. Telescopes onboard NASA’s Solar Dynamics Observatory recorded the explosion’s extreme ultraviolet flash:

A pulse of UV and X-radiation from the flare ionized the top of Earth’s atmosphere. This, in turn, altered the normal propagation of shortwave radio transmissions on the dayside of our planet. A map from NOAA shows the geographical regions affected: mostly Australia and east Asia. People who might have noticed blackouts, fades, and other transmission irregularities include aviators, mariners, and ham radio operators.

Considering its extreme size, AR2665 has been relatively calm so far. Stronger flares and CMEs could be in the offing, however, as the sunspot continues to grow and turns toward Earth. Stay tuned for updates.. Free: Solar Flare Alerts

Website Technical Issue v20170528

WordPress’ recent update (v4.7.5; 18 May 2017) seems to have introduced a bug in the “Feedback Notification System.” Prior to the v4.7.5 update, Feedback and Comment postings were automagically Emailed to your Kindly ‘Ole Volunteer Webmaster when posted. After the v4.7.5 update, automatic Email notifications became INOP. WordPress has been notified of the issue. Your Webmaster is monitoring the situation. Also, every ~3 days, or so, he will manually check our Club’s website’s Notification Queue. This will explain why there might be a delay in a response. Until the issue is resolved, if you have an urgent matter, please send an Email directly to gearsw6rhc.