Daytime in NW San Antonio: Nothing
Sunset: Both XESFT "La Poderosa" in San Fernando and WBBM come up. Aiming NW, XESFT is heard alone, and aiming NE, WBBM is heard underneath.
Night: When XESFT goes to day power, WBBM dominates, and XESFT is heard underneath. Aiming NW, I can get a fairly good null of WBBM and hear XESFT more clearly.
Interestingly, XESFT appears to go off air about 10:10 p.m. CT every night. There's no sign-off; it just suddenly disappears. Late last Sunday night aiming NW (see the "Post your latest DX" thread), I briefly heard a weak HJFV "Radio Viva" in Pasto, Colombia, which is my first South American catch on AM and furthest AM catch (from the U.S.). I also heard what I believe was KKOH, but it was too weak and intermittent to positively ID.
When monitoring the frequency this past week, I've heard HJFV pop up very weakly a few times, but the signal has never been as good as it was last Sunday, when propagation must've been really great.
Sunrise: Some time before 6 a.m., XESFT reappears and mixes with WBBM.
Retro: I used to hear XEWGR regularly and KCEG on occasion. I know that the latter has been off air for a while. I'm guessing that XEWGR might've transitioned completely to FM because I have not heard a trace of it lately.