Re: Digest for radiometeors@googlegroups.com - 3 updates in 1 topic

[Gary Eldridge]

I have not been monitoring meteor activity since moving to a new location several years ago but intend to set up a new system in the near future. I would like to comment that during my years of monitoring/observing I found there to be a rise in meteor activity in the early morning hours, as to be expected, but then again in the early afternoon hours. This was surprising to me but it is what my system showed. Does anyone else have the same observation?

On Wed, Jul 23, 2025 at 2:19 PM <radiom...@googlegroups.com> wrote:

radiom...@googlegroups.com

Google Groups

Topic digest
View all topics

• A 1965 Electronics Magazine Article About Meteor Scatter - Reprinted from RF Cafe - 3 Updates

A 1965 Electronics Magazine Article About Meteor Scatter - Reprinted from RF Cafe

Rich Glassner <richgl...@gmail.com>: Jul 23 05:33AM -0700 Thank you Denny for the great article. The article raises questions that I would like to know more about. I would appreciate any help to these questions.   Are there any websites or other sources of information that show the statistics of sporadic meteors? I would like to know for non-shower sporadic meteors whether the quantity and quality (e.g. overdense/underdense ionizations) are increasing or decreasing over long periods of time and/or over seasonal periods? If a change in trend exists, what are believed to be the causes?   When looking at a strip chart with time on the horizontal axis and amplitude on the vertical axis, for example, what are the characteristics of sporadic-E on the chart that would allow me to know that I am not looking at meteor reflections? By listening to the audio for an hour or so I can easily identify the meteor reflections but am never sure when a period of sporadic-E might have set in.   Thanks, Rich Glassner Jefferson City, Mo.   On Tuesday, July 22, 2025 at 2:22:02 PM UTC-5 Denny - K0LGI - wrote:

Mike Otte <mike....@gmail.com>: Jul 23 07:25AM -0700 Hello All, This article is quite dated.   Current resources: rmob.org https://www.imo.net/ https://www.emeteornews.net/   Sporiadic rate changes daily and is called the diurnal. Rate increases as we come into the morning twilight because we are headed into the debris lying in the way of Earth as it orbits around the Sun. Rate is lowest in the evening when we are in the shadow of the earth's path. There is seasonal changes too with more from summer to winter and less winter into spring   Sporiadic-E propagation is a problem for meteor counting and for me it causes Over counting because of almost continuous reflections mainly in June and December but of late with the active Sun, much more often including aurora.   I have been doing radio meteors for over 25 years and would be glad to share what I know and don't know.   Mike Otte w9ys Northern IL     On Wednesday, July 23, 2025 at 7:33:50 AM UTC-5 Rich Glassner wrote:

Denny - K0LGI - <de.k...@gmail.com>: Jul 23 09:47AM -0700 Indeed, Mike it is a vintage article about this subject however it does describe it from a different viewpoint. I have found similar older articles I have submitted links to this group about this subject in the past. Although they are also be considered 'vintage' they in general offer a historical perspective about this subject.   I have paused my meteor observations currently due the complete loss of my antennas designed for that purpose because of the 2020 Derecho. Now since the increase in solar flux I have shifted my interest mainly to the reporting of solar flares observed on HF.   The following links may be of some interest Rich where more interesting details are included by other authors or groups.   Included below are several informative and comprehensive links regarding radio detected meteor observations. They are the from the efforts of the American Meteor Society (AMS) http://www.amsmeteors.org/ and several others are from the International Meteor Organization (IMO) http://www.imo.net/       - Some Notes and Equations for Forward Scatter *http://amsmeteors.org/radio/*scatter_notes.txt <http://amsmeteors.org/radio/scatter_notes.txt> - The Meteor Meniscus *http://www.amsmeteors.org/* resources/ams-programs/radio-observing/the-meteor-meniscus-meteor-distance-verses-meteor-zenith-angle/ <http://www.amsmeteors.org/resources/ams-programs/radio-observing/the-meteor-meniscus-meteor-distance-verses-meteor-zenith-angle/> - The American Radio Meteor Project AMS Bulletin No. 203 *http://www.amsmeteors.org/*radio/ams203.txt <http://www.amsmeteors.org/radio/ams203.txt>     An Introduction to Meteor Radio Scatter     *http://amsmeteors.org/*resources/ams-programs/radio-observing/ <http://amsmeteors.org/resources/ams-programs/radio-observing/>       International Meteor Organization (IMO) Links       *http://www.imo.net/radio/**reflection* <http://www.imo.net/radio/reflection>     *http://www.imo.net/radio/**astronomy* <http://www.imo.net/radio/astronomy>     *http://www.imo.net/radio/**reduction* <http://www.imo.net/radio/reduction>     *http://www.imo.net/radio/**practical/setups* <http://www.imo.net/radio/practical/setups>     *http://www.imo.net/radio/**practical/transmitters* <http://www.imo.net/radio/practical/transmitters>     *http://www.imo.net/radio/**practical/antenna* <http://www.imo.net/radio/practical/antenna>     *http://www.imo.net/software* <http://www.imo.net/software>     *http://imo.net/files/data/**calendar/cal2016.pdf* <http://imo.net/files/data/calendar/cal2016.pdf>     *http://www.imo.net/radio/**literature* <http://www.imo.net/radio/literature>

Back to top

You received this digest because you're subscribed to updates for this group. You can change your settings on the group membership page. To unsubscribe from this group and stop receiving emails from it send an email to radiometeors...@googlegroups.com.