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Enrolling a callsign records information about a transmitter facility in a database. That information includes such boilerplate things as latitude, longitude, continent, antenna height AGL, and so forth. When a plot is requested the plot engine uses the database to provide the boilerplate as parameters to the plotting system, saving the user the trouble of having to enter it each time a plot is requested. We also use the boilerplate to create the portions of KML/KMZ files that indicate what stations might lie in the service area of a transmitter. We also record the user's IP number and some other things to make mitigating attacks easier, and to allow us to keep statistics.
This is usually caused by entering incorrect information in the database. Re-enter the information, either as a "new callsign", or an "update" to the old callsign. Callsigns consist only of letters, digits, and dashes, and will be mapped to upper case before being recorded. No "blanks" or underscores are allowed, although some legacy entries are now incorrect in the database.
This happens when the boilerplate information in the database indicates your station location is in the middle of a body of water. Almost always, if you are in the Western Hemisphere, it really means that you neglected to use "-" on the longitude entry when you enrolled the callsign. If you are in the Eastern Hemisphere, use "+" longitude. Above the equator, use "+" latitude entries, and below the equator use "-" for latitude entries.
This happens when stations record their latitude and longitude incorrectly.
This happens when stations record their latitude and longitude incorrectly. Did you reverse latitude and longitude ?
A good alternative, if you have the resources, is to download google-earth-pro and install it on your own computer.
Just load each of the KML/KMZ files into Google Earth.
We rely heavily on Google Earth for placing plots in geographical perspective, but there are alternatives. You can use Google Earth on the web or downloaded versions (we use google-earth-pro) are available for local use. We have reports of a system called "cesium" working well also. Any system which uses Google's KML/KMZ files should be satisfactory.
Some possible alternatives include:
This website deliberately provides only for some common situations. We suggest you download and install SignalServer for your local machine. SignalServer has a lot of options and parameters, and possibly you will find that it can be used for your situation. See the About for information about downloading and creating your own installation.
Nope. No PHP either.