How can the same FM station appear at two different spots on the dial?
To the person who complained recently that I was off topic, I'm sorry. This is not about any repair it would be feasible to make. It's only about electronics.
Where I live there are two FM radio stations, 88.1 which is only a few miles away, and 88.5 which is 40 or 50 miles away.
Right now, only my expensive KLM radio plus any car radio gets the second one well, but I've had some cheap radios that do almost as well.
I lose track of which radios those are, so I'll start tuning at 88.1 and tune up very gradually. After a period of silence, when I get above
88.5 to what I'd estimate is 88.6 or .7 or .8 I get 88.1 again.How is that happening? I know about harmonics, but that doesn't apply, does it?
P.S. This means 88.5 doesn't come in at all. I've tried stretching out the power cord, which on the cheap radios is usually the antenna. Sometimes that helps but on most of the radios, 88.5 won't come in at all.
P.P.S. 88.1 is WYPR Baltimore. 88.5 is WAMU in DC. Sometimes they play the same thing, like during the top of the hour news, Diane Rehm, etc. although WAMU is on a 5 or 10 second delay most of the time. Because the topic and the voices can be the same it means I can't tell for a while if I've gotten 88.5 or just another 'instance' of 88.1.