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Great Circle Map Generator
29 December 2015 | by 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.
Steve McDonald, VE7SL, is a regular contributor to AmateurRadio.com and writes from British Columbia, Canada. Contact him at [email protected].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.
14 Responses to “Great Circle Map Generator”
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The azimuthal map by NS6T is quite slick! I use it for antenna pattern comparisons and general DX work. Here’s to a good 2016 for all.
I love reading these articles because they’re short but iniamrotfve.
Thanks for the map. It is just what I was looking for.
73s
Super info.. Thank you!! Been wanting something like this for a long long time. Very helpful with planning antenna layout and which direction to face the verticals.. (LOL). Seriously, this is a great source of info. Thank you.
72,
Dale – WC7S
great aid for the vhf contest !!
Thanks,
Dale – WC7S in Wy
Great map and free for a change.Worked well for an upcoming article I’m writing about beacons.
Very useful. Thank you !
Thank you so much just what I was looking for
Best regards
Thank you for producing the map it is in constant use in my shack
Best Regards & 73
How about a great circle map centered on my grid square showing all grid squares of the earth?
Can I get a great circle map entered on my qth? Thanks warren VK3LX
Wow, just what I was looking for and can be centred on my grid square! What could be better. Many thanks for sharing. Keep safe 73 de Roland G0GZI.
No,comment,..is fery you
sorry typo, can’t say only 1 special word