KILT-AM directional pattern - a geek question

[NoMoreLurking]

Is this directional pattern for KILT upside down? Don't they send most of their power south into Houston and out into the gulf?

http://fccinfo.com/CMDProEngine.php...SearchType=Appl&sAppIDNumber=1414538&sHours=N

 

[Lazy J]

Here is another "representation" of the KILT signal pattern.

http://radio-locator.com/cgi-bin/pat?call=KILT&service=AM&status=L&hours=D

AM signals carry very well over salt water, so the patterns look huge over the gulf. You can look at any major AM station near any coast and it will have the same effect.

But the red line has roughly the same pattern as the link you posted.

 

[NoMoreLurking]

It's just that I recall seeing a pattern map for KILT a few years back that was the inverse of what I see these days, with the deep nulls to the NE/NW instead of to the SE/SW.

 

[jd]

FCCinfo.com gets their data directly from the FCC, but something very strange is going on here. Look at the night pattern on the FCC site: http://transition.fcc.gov/ftp/Bureaus/MB/Databases/AM_DA_patterns/1414538-113723.pdf

The day pattern is messed up too: http://transition.fcc.gov/ftp/Bureaus/MB/Databases/AM_DA_patterns/1414538-113722.pdf

I've seen these plots inverted, or rotated 90 degrees either way on the FCC site (temporarily, as they were subsequently corrected), but never with a combination of that and such a discrepancy between the standard and augmented patterns. 25 augmentations at night and 21 during the day? I don't think so. For what it's worth this appears to be an isolated situation with KILT, since all the other patterns for Houston area stations that I checked appear to be normal.

 

[schmave]

Wow, those are messed up. That night pattern basically shows no signal over the western half of Houston, and as anyone to the north of 610's towers knows, their night signal is horrible to nonexistent once you get any distance north of the Beltway.