I am in the midst of rerunning the Yuma stations impacted by the Salton Sea issue.
YELP PHOENIX ARIZONA TV STATIONS UPDATE
UPDATE ( at 3:08PM ET): So the Iowa maps should be done. I'll be rerunning maps in that area as well. I've tried replacing the terrain data with newer data here as well and the issue appears to be resolved per the KESQ map I ran. I also want to note that there is at least one additional hole that I'm aware of in the US, in southwest Texas, but as I recall there are few or no TV stations that reach it, so I'm not sure if I'll need to do much there.įinally, there was also a separate flaw in the terrain near the Salton Sea in California.
It's been wrong for literally the last 15 years and I'm very used to it.
It's going to take some getting used to the fact that those maps are now correct. I personally found the South Carolina one to be most jarring, followed by Florida (pretty flat), followed by Rhode Island (decent portion of the diamond was in the ocean anyway). I'm going in order of how offensive I found the missing data to be Iowa was clearly worst, but the other three are all somewhat minimal just because of how close to sea level the terrain is in those places. I also intend to fix the maps in Florida and Rhode Island, but I'll do those after South Carolina is done. Once I'm done with Iowa, I'll move on to South Carolina. As of this writing, I've also grabbed the patched terrain for the South Carolina hole, and tested it on WBTW to prove that hole is also patched. I'm in the midst of rerunning the maps that were impacted by that issue in Iowa. Sure enough, the hole there is now patched and the maps came out looking correct. I grabbed the files that cover the Iowa hole, which was the worst of the four, and reran one of the maps. I went looking and found it, but then I noticed a message that said the data had been updated in 2015 and now had some of the holes in the data have been patched. Yesterday I got a question from a friend about where the SRTM-3 data had moved to, since the links on the SPLAT webpage are dead now. Using functions SPLAT has for handling it, I had patched in other lower-resolution data, and while it helped, it still wasn't really correct. What's wrong is that the SRTM-3 data that is used by SPLAT to create those maps has diamond-shaped holes in it in those places. If you've ever looked at the Longley-Rice coverage maps in or near Des Moines, IA Providence, RI Florence, SC or Gainesville, FL you've probably noticed that they have odd diamond-shaped areas where the maps just look wrong.
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