[Elecraft] Elecraft CW Net Announcement

[kevinr]

Good Evening,

    It has been dropping into the 40s each night this week.  I almost 
started a fire in the woodstove. But, by noon it was back to 70 again.  
I collected a lot of dry, bucked up wood and got my exercise.  Ten more 
truck loads and I'll be started.  While I was complaining to the jays I 
must have used my hands too actively.  I saw three sets of ears flick in 
my direction.  About a hundred yards away, through the thinned fir 
trees, I saw a doe, then a yearling, followed by this year's fawn.  They 
weren't moving too fast but they were looking at me.  So were the jays.

    I reviewed a few of my college texts this week: "Fundamentals of 
Applied Electromagnetics" by F. T. Ulaby and "Antenna Theory - Analysis 
and Design" by C. Balanis.  All my book marks and penciled in notes sped 
things up a bit.  Now I need to spruce up the code I wrote around three 
of the antennas I modeled.  My code gave me radiation patterns for 
training neural nets for 1/2 wave dipoles, 1/4 wave monopoles, and full 
wave loop antennas.  It will be fun to add transparency and shading 
while I map them as 3D objects in space.  I need to revamp the sliders 
controlling height above ground and orientation.  They were a kluge when 
I created them, but worked well enough to create data sets to train my 
adaptive ARTmap neural nets.  Ulaby's book is a great primer on fields 
and waves.  Chapter 9 introduces antenna analysis for a 1/2 wave dipole.


Please join us on (or near):

14050 kHz at 2200z Sunday (3 PM PDT Sunday)
  7047 kHz at 0045z Monday (5:45 PM PDT Sunday)

    73,
       Kevin. KD5ONS


_


There is no spoon