"Roger" wrote in message
...

Why?

I regularly file, 3BS direct LDM (94 miles), Direct MTW(55 miles),
Direct OSH (39 miles). Coming home I file the reverse but still direct
Each is in a different sector. 3BS (Cleveland Center) is an airport,
LMD(Minneapolis Center) is an NDB, MTW (Green Bay?) is a VOR, and OSH
is both an airport and VOR (Chicago)

Altitudes vary between 5,000 and 8,000 although I have been sent
higher on occasion.


It appears all of that route is within radar coverage at those altitudes. I
don't see your point.