Online Map Creation using AZ_PROJ v1.1.7
Joe NA3T (EME B,D) and Michael NV3Z (EME B,D)
This site is provided by Mark, WM7D in Reno, NV, USA.
Joe last wasted time on this page on
last server code upgrade
running AZ_PROJ v1.1.7
If you've been here before and know what to do, you can just go
make a map using the
the labels for each DXCC country were plotted with the -ve of the bearing.
So if a country was to your NE, the label was displayed to the NW. Goodness knows how
long this has been going on.
the labels were displayed red/green. This has been changed to black.
If you want something else, you can change it in your own downloaded version of az_proj.
If enough people want the version on the wm7d server here changed to another color, let me know.
the labels were on top of each other around the perimeter of the map. David
changed this to make each label a different distance according to the first letter of the prefix.
So countries with the prefix '0' are right at the perimeter, while the prefix 'Z' is further out.
Now you can read more of the labels, but some of them will have moved off the edge of your map
(those countries to your E and to your W in portrait mode).
DXCC label problems fixed: Thanks to David G8SQH who sent me code fixes.
The problems were
Thanks to David VE7NDE,
the border between North West Territories and Nunavut in Canada has been added
and the border between the US states MO/AR has been restored.
What's on the AZ_PROJ website
Presentations by NA3T
Sites using AZ_PROJ
Thoughts on restructuring and where ham radio could be going.
a Tcl/tk Grid Square/Distance/Bearing Calculator
North Carolina phonetics
- Where are people centering their maps?
(The idea for these maps comes from a site whose URL I've lost).
The QTH information from the 25,000 maps drawn from Oct 98 to Feb 00 was used to construct the
aggregate map for the whole world
and a close up of NA and Europe.
Notable hot spots are the Galapagos Islands and Aruba (popular sites for DX-peditions).
The eastern half of USA draws a disproportionate number of maps relative to the
US ham population.
The large number of maps centered on Kyrgyzstan, relative to the ham population,
are probably by people in the US who don't know whether they are east or west of Greenwich.
A spot in the ocean SW of Baja California is probably
Pratas Is, BV9
by the same people.
What we can learn from analysing contest logs.
Some historical perspectives on ham radio, including US licensing conditions.
Possible reasons to do this are to
The ARRL's policy is to not release this information as it
would enable less skilled hams to learn from contest winners.
I am a past winner and I think this policy is not good for ham radio.
Here is a log of my
efforts to analyse the 40yrs of contest
and VUCC data that we've paid our employees at the ARRL to collect for us.
- look for VHF propagation anomolies seen only when large number of people are on the air.
- document the expansion of hams into new bands
- determine the best grids for Rover and DX-peditions.
These links are dead. I'm looking for the original text.
- US operator licensing requirements
(Chapter 33 of the book The Art and Skill of Radio-Telegraphy
by William G. Pierpont N0HFF. (thanks to N3QYE now WW4M)
- Some US ham radio history, by W2XOY, originally on the now defunct Hudson Division website,
http://www.hudson-loop.org/ is on the Wayback machine.
Here's the timeline
and the first 16 installments
Supposedly 17,18 exist, but I haven't found them.
- An image of the original What hath God Wraught message.
- http://www.radiolab.net/ab4rl/ AB4RL's page had a paragraph on restructuring.
Even AB4RL doesn't have this article anymore.
I've recovered most of the links from the
- http://www.knowcode.org/ KnowCode Int an argument for entry barriers to the ham license
Making a map here on the Server.
This server can generate a downloadable customised colored
map using a subset of AZ_PROJ's features.
Anything you can do here, you can do at home too
(the server is running the same code).
You can use the
if you only want to change the scale and the location of the center of the map.
Otherwise, you can fill out the
to use all of the server's features
(elevation, center offset, gridsquares, lat/lon lines,
geographical features, greyline, compass, beacons/TV stations).
I'm looking for...
info to make maps of ham density by gridsquare
(sample from NE USA).
For USA I used the FCC list of hams/addresses with zipcode and
the US Govt list of lat/lon for each zipcode. If you know where I can
get equivalent information for other countries for free, (or anything else
that might be usefull here) please let me know.
maps with lat=±90° crash the map generator.
This really isn't a bug as there is no azimuthal equidistant map
from these locations - all points are south or north.
However people often try to make this map
- it's only natural to wonder what the world
looks like from the north and south pole.
What they probably want is a map like the
I could do this, but I haven't got around to it yet.
Color Problems If the nighttime part of the
globe animations are gray, rather than
lightblue, (or you have blank
spaces in this sentence) then here's
Other Online Map Resources
Roger Hedin SM3GSJ has a Microsoft windows based azimuthal
equidistant mapping program for hams which
uses the same wdb database for the geographical information as
The GARP Server
is another az-equidistant map server. It has altitude (and ocean depth) information.
About the Azimuthal Equidistant Map Server
How to contact us
About Joe NA3T:
see my other webpage at
Joseph Mack NA3T (C) 1995-2011