Software manuals in Adobe PDF format:
Windows Vista and XP require you to install this software with Administrator options. To do this in XP, simply log in to a user account that has Admin or full user privs, then insert the CD to start the installation.
To install this program under Vista, first CLICK the START button (icon) in the bottom left corner.
Then in the START SEARCH box type in D:\SETUP.EXE
This assumes your CD drive is drive D, otherwise substitute the correct drive letter.
You should see a file icon appear above with the name SETUP. RIGHT-CLICK on this file then select the option
RUN AS ADMINISTRATOR. The program should now install normally.
A replacement file for Table 19 in Chapter 18 is now available in PDF Format.
April 30, 2009
Dean Straw, N6BV, has provided updated statistical elevation-angle files for use with the HFTA application contained on the Antenna Book CD. During the original CD installation process you were asked to specify the region where you live so that appropriate statistical elevation-angle files could be installed along with HFTA. You may wish to replace the files currently in this directory with these to achieve greater accuracy. The statistical elevation angles are computed for the full 11-year solar cycle from transmitting sites indicated by the filename.
The US government has released digital terrain data that covers about 80% of the world (between 60° N and 54° S latitudes). The survey data was generated during a NASA Space Shuttle mission in February 2000, and is called SRTM (Shuttle Radar Topography Mission) data.
Inside the continental USA, parts of Alaska, Hawaii, Puerto Rico and certain US Territories in the Pacific, SRTM data is available with a resolution of 1 arc-seconds (approximately 30 meters, equivalent to seamless NED data). Outside these areas, the US government has restricted the resolution to 3 arc-seconds (roughly 90 meters). Despite these restrictions in resolution, the SRTM digital data is easier to use to generate terrain profiles for HFTA than are any manual mapping methods.
The HFTA.PDF operator’s manual steers the SRTM user to the website for the CGIAR Consortium for Spatial Information and gives detailed information on how to select and download the desired terrain data. You may download the new HFTA.PDF at the following URL: www.arrl.org/notes/9876/HFTA.pdf
Save the HFTA.PDF file to your HFTA subdirectory. If you did a standard, default
installation, this will be located in:
c:\Program Files\ARRL\Antbk21\Terrain