S of El Cajon, CA...
• Day, summer
Blank channel or maybe carrier (no audio) from KHPY Moreno Valley on "ordinary" portables. Using a SAT or GE SR3 may bring in a weakly audible KHPY.
• Day, winter
Fair but fading signal from KHPY on portables. On peaks it's almost as strong as a 50kW ND clear's average nighttime signal from about 500-800 miles away.
• Night
KHPY is usually fairly strong, and can sometimes exceed XEPE in signal strength even though 1700 is only 15.6 miles away. They are easily my strongest X-band signal at night, and one of the strongest skywaves on all the band on peaks, eclipsed only by 720 KDWN, 740 KCBS, 840 KXNT, 1530 KFBK and 1580 KMIK, maybe plus 1 or 2 others. The only local groundwaves that are stronger than KHPY's peaks are 600 KOGO, 760 KFMB, 910 KECR, 1130 KSDO, 1170 KCBQ, and maybe 690 XEWW, 1240 KNSN, 1360 KLSD and 1470 XERCN.
KNRO Redding has also made a few appearances, but usually at best it's just maybe a hint of audio modulation underneath and the off-frequency carrier het beating against KHPY.