The new URL for my web page is w2du.com. My new email address is
.

Please use my new web page URL when accessing it. My page will soon
have new material added, but for now it has only selected chapters
from Reflections 2, which include the R&D report of my RCA research on
the quadrifilar helix antenna flying on all TIROS-N NOAA
polar-orbiting weather spacecraft. The research included antenna
pattern and impedance measurements I made on more than a thousand
different electrical and physical configurations of the antenna in the
late 1970's that produced the one used on the TIROS-N spacecraft. A
picture of the test model used in the measurements appears in my R&D
report.

Walt Maxwell, W2DU