Internet, cellphone apps, and personal computers, many calculations began with a lookup table, chart, or
nomograph. In the case of long distance radio operators seeking distance and direction information for
pointing antennas, it took a map like this one published by Radio News & Short-Wave magazine in
1934. Distance are all relative to New York (NYers have always considered
themselves the center of the universe
so operators in other locales need to compensate. Here is one example of many online
great circle calculators
that allow you to enter two sets of longitude and latitude. Unfortunately, I do not have the next
month's edition for be able to post the second chart mentioned.
of Contents]These articles are scanned and OCRed from old editions of the Radio & Television News magazine.
Here is a list of the Radio & Television News articles
I have already posted. As time permits, I will be glad to scan articles for you. All copyrights (if any) are hereby
See all available
vintage Radio News articles.
World Distance Chart
HOW TO USE THE WORLD DISTANCE CHART
To use the map
first find the distance in inches between New York and the desired point, multiply this by the
miles per inch shown on the scale on the chart and the answer will be a close approximation
to the air line distance between the two points. This chart is reproduced from the March, 1933,
issue of RADIO NEWS for the benefit of our new short-wave readers. Chart Number Two will be
published next month
World Distance Chart No. 1
Posted July 29, 2013