Well,I guess I don't know where all of the 640's are in U.S.A. I can
easily do a www.dogpile.com for them and look them up.But,the 640
AM radio station I was listening to definetly was either Northwest or
Southeast of me.I know which way is North,South,East and West and in
between those points of my Compass without needing to actually look at
my Compass.I had the back of my radio aimed to the Northwest to pick up
the best signal from that 640 AM radio station (wherever that particular
AM 640 radio station I was listening to is?) because my couch faces due
West and that was the easiest way for me holding the front of my radio
in front of me.It would have worked the same way (it isn't rocket
science,boys and girls) even I had been holding the back side of my
radio in front of me.
cuhulin