On a clearer 930, KHJ was still a challenge due to the very sharp null towards WKY. That null effectively reduced the power towards the east and northeast, and most of the Midwest, too. In fact, when I was PD of (K)KHJ, the null towards Glendale, La Crescenta and Montrose often allowed WKY to be heard right in the metro area!
I figured that was the case because I could hardly hear KHJ in the Coachella Valley at night years ago.