Sony STR-DA5ES Operating Instructions Manual page 7

e FM wire antenna
(supplied)
AM loop antenna
(supplied)
Notes on antenna hookups
l
To prevent noise pickup, keep the AM loop
antenna away from the receiver and other
components.
l
Be sure to fully extend the FM wire antenna.
l
After connecting the FM wire antenna, keep it
as horizontal as possible.
l
Do not use the h SIGNAL GND terminal for
grounding the receiver.