Sorry to report that as of Sunday Mar 6, several of my reference pages
are no longer found on my web page. I am investigating as to the
reason for their disappearance. It's especially disturbing that the
pages referring to the quadrifilar helix antenna research are among
the missing. I will get the missing files back on the web page as soon
as possible.

Sorry for the inconvenience to those who are looking for the QHA data.

Walt, W2DU

On Thu, 03 Mar 2005 19:43:58 GMT, Walter Maxwell wrote:

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