[VE7SL] Great Circle Map Generator

[VE7SL via rec.radio.amateur.moderated Admin]

VE7SL - Steve - Amateur Radio Blog

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Great Circle Map Generator

Posted: 29 Dec 2015 12:32 PM PST
http://ve7sl.blogspot.com/2015/12/great-circle-map-generator.html

A recent 'year end review' posting in the Amateur Radio Weekly blog,
reminded me of great little piece of online software that might interest a
lot of hams. It is a very nice Great Circle Map Generator, centered on
your specific location.

The map generator is the brainchild of Tom, NS6T, and can be found on
his 'HAM STUFF' website along with some other interesting bits. The actual
map generator can be found here.The user interface is simple and map
generation times are fast. Anyone with a beam will likely be interested in
this, should they not already have a great circle map for their present
QTH.

I used my six-letter grid square identifier for centering the map.
Depending on the 'distance' value used, one can tailor the map for local /
regional work or for a worldwide setting.

This is the map generated for a distance unit of 500km and would be helpful
for local VHF'ing:


This map was produced when a distance unit of 4500km was used ... nice for
the 6m grid square hunter:



This worldwide map was produced with an input of 18000km:


Hopefully you might find the map generator of some value in your own shack.