In article . com,
"Andrew" wrote:

I was flying through Chicago last night, VFR outside class B. The
controller was busy. When he said "01U radar contact, xx miles from yy"
I decided to not say anything back. He was busy talking to many
airplanes. A few minutes later, he repeated the "01U radar contact, xx
miles from yy". I guess he wanted an acknowledgement, even though he
was busy.


Just respond back something like 7-sierra-papa...just last of your tail#
is sufficient typically

--
Chris Schmelzer, MD
Capt, 110th Fighter Michigan ANG
University of Michigan Hospitals
Ann Arbor, MI