Splat Web Interface

Splat! is a program which utilizes terrain data (from Space Shuttle missions) to create plots for determining coverage areas provided by various antenna configurations, or to analyze the radio path between two locations. Splat! is of particular interest to the Amateur Radio Community. This web page provides a web interface to the splat! program.

Thanks to Bill W5GFE for providing the web scripts and prepared SRTM data used to run the web site on this server!
See Bill's original site at http://splat.ecok.edu/

This site courtesy of WA7UHF Seattle UHF Repeater Club and Mark Hagler, KK7U. See the WA7UHF web site for contact information.

January 2009 - I just assembled this site on my server from Bill W5GFE's scripts and terrain files. I have produced a few plots so I think it's working, but if it fails for you please let me know and I'll try to fix it. Thanks! - Mark Hagler KK7U

There are seven items of interest on this page:

Terrain Data Information

Terrain data for all of North America is available, but "city" and "political boundary" data is available only for the United States at this time

Privacy Notice:

We need some information in order to create plots or profiles for you.

You need to know that we will "file" the geographical information that you provide so that it appears on plots generated by other users, as well as by you. This will ultimately result in a "ham station" map of the area, but your station's geographic location will be disclosed to anyone who uses these pages to create plots or profiles.

The site also records the IP address that you used to access the site, and this is stored in the database where others can view it. We do not ask for your name or contact information. The information collected is used only for the purposes of producing plots for you and others interested parties.

If you want to have your information removed, please contact the WA7UHF club via the Contact page at the web site.

Registration

In order to use the Splat! software you must first "register" your station location by following the
Registration Link
You will need to know your latitude, longitude, and the height of your antenna.
Here is a list of Registered Stations
Here is the current Log Book
If you create plots involving more than one station, each station must be registered.

Registration involves providing only geographic information. No email address is collected. Please see the Privacy Notice.

Coverage Plots

Coverage plots involve only your own station, and provide a (rather large) PNG image that uses various colors to show expected signal strength on a map that contains your QTH. The terrain data is depicted on a gray-scale map, using data from space shuttle missions. The data includes HAAT calculations.
Follow This Link for Coverage Plots.

Profile of Paths Between Two Stations

These plots use geographic data for two stations to produce profiles of the paths between those two stations. If the two stations are separated by long distances (say Texas to Connecticut) you may get some really funny answers. Two stations may lie in different states so long as the physical separation is not too great.
Follow This Link for path profiles.

Multiple Transmitter Plots

These plots take a long time (up to six or seven minutes!) to create. Multiple transmitter sites are combined to illustrate the total coverage possible.
Follow This Link for Multiple Transmitter path profiles.

How to Download This Website for your own use

You can download splat! itself, as well as the components of this web site for your own local use. You will need: Check out Bill W5GFE's FTP Downloads Directory which is where I got the scripts and data to run this site on my server.

Credits

 All credit for splat! belongs to John Magliacane KD2BD. I encourage you to visit his site and enjoy his talents!