[TriEmbed] TriEmbed This Monday @ 7pm MEETING REMINDER and the wandering magnetic north pole

[Pete Soper]

This Monday at 7pm Nick Edgington will talk about open source, seriously 
powerful tools for embedded development. I'll let Nick chime in if he 
wants to with an abstract of his plans for this month and next as he 
covers an IDE and an open source RTOS as they relate to Espressif parts 
(e.g. ESP32) during the May and June meetings (or to correct me if I 
didn't get the gist right).

The TriLUG experts have made it clear that the Jitsi servers that handle 
our virtual meetings like Firefox the best: Chrome apparently stresses 
the server side more than Firefox, using much more bandwidth. Since I'm 
not able to arrange for us to use triembed.org to run the meetings we're 
on somebody else's dime <https://jitsi.org/> . Plus, you don't even need 
a plugin for Firefox, you just need to give permission to it to invade 
the privacy of your face (Chrome doesn't ask).  Here's the URL for the 
meeting:

https://meet.jit.si/TriEmbed

I'll leave it to Paul to send a checklist before or at the start of the 
meeting for how-to and protocols.

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Some of you have probably been reading about the publication of the 
science behind the relatively rapid movement of the earth's north 
magnetic pole. Related to this is a "K index" that is a normalized small 
integer expressing the "stability" of the earth's magnetic field. (You 
might be saying to yourself 'who knew my compass needle could jump and 
jive from one year/month/hour to the next?') But this stability isn't 
one thing: the earth's magnetic field dances in multiple places.  Here's 
one of the world's most capable amateur radio contesters (Frank Donovon 
W3LPL) shedding more light on the K index and how to find out more about it:

(in reply to something another club member wrote)

As you discovered, transient geomagnetic activity is measured by
magnetometers and the local K-index is calculated and reported every
three hours by dozens of geomagnetic observatories around the world.

Many of us are familiar with the three hour Boulder k-index, but also
of interest and readily accessible on the internet at
www.swpc.noaa.gov/products/station-k-and-indices 
<https://www.swpc.noaa.gov/products/station-k-and-indices>
are the estimated planetary K-index and three local K-indexes:

      - College Alaska K-index,
      - Fredericksburg K-index (NR4M's local K-index!), and
- estimated planetary Kp-index calculated from k-indexes reported
        by a network of 13 geomagnetic observatories at mid-latitudes.
swpc.noaa.gov/products/planetary-k-index 
<https://www.swpc.noaa.gov/products/planetary-k-index>
http://isgi.unistra.fr/Images/reseau_Kp.jpg

SWPC also publishes near-real time alerts, watches and warnings based on
*real-time* local K-index reports from the network of geomagnetic 
observatories.

www.swpc.noaa.gov/products/alerts-watches-and-warnings 
<https://www.swpc.noaa.gov/products/alerts-watches-and-warnings>

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