What's going on with my radio, or, the Human Antenna

Factual Questions
1

I have a clock radio on my bedside table. For the past three weeks or so, a weird thing has been happening with it.

Radio goes off at appointed time and I lie in bed listening happily until it’s time to get out of bed. I swing my legs around to sit on the edge of the bed. Radio is broadcasting my station of choice just fine.

Then I stand up, and an obnoxious noisy station starts bleeding in. (When I stand up, I’m not directly in front of the radio.) I take the couple of steps to the bedroom door. As soon as I’m past the radio, it reverts to its previous clear broadcast of the station of my choice.

I step into the hall and turn left. I take a step or two toward the bathroom, and the obnoxious station bleeds back in and then back out as I continue down the hall.

What is causing this?!? Talk geeky to me.

2

The same thing happens to me, and it’s annoying. There is a sweet spot on my bed that enables clear reception, but moving too far from that spot allows bleed-in. Moving around the room leads to other sweet spots, as you also have experienced. Check here for a good discussion about this: Human (And Dog) Antenna - radio reception physics | Ask MetaFilter

3

This happens to me at my current apartment (although it didn’t with the same radio in other places). I mostly solved it by wrapping the little rubber coated antenna around a bar of my metal bed frame.