Radio Stactic mysteriously disappeared?

Factual Questions
1

Behind my desk is a square radio-cd combo about 6 inches in all 3 dimensions. On one frequency 790 in Los Angeles, I get irritating static which does not go away when I change locations…or turn it around. It should be noted that I live in a canyon.

After all these years, I asked my wife (who is the electronic mavin and who can figure out how modes and the other buttons on watches work) to figure out what to do.

She shifts the radio around like I always had and then tilts one end of the cube off ground level for 2 inches…wedged something to keep the cube tilted and the static disappears.

Was there a short? If so, why were the other stations coming in just fine. If not, pray tell, what probably happened to make the static disappear when the radio is tilted?

2

I’m not an engineer, but I do go back to the days where we all built crystal sets.

My guess is one of two things:

A) there was a loose ground and tilting the set made the connection better, or

b) tilting the set re-positioned the antenna just enough so it picked up the signal better, eliminating the static.

With AM radio, just about everything winds up being antenna position or ground.