Sony MHC-V818 Operating Instructions Manual page 13

AM antenna
Connect a 6- to 15- meter (20- to 50- feet)
insulated wire to the AM antenna terminal.
Leave the supplied AM loop antenna
connected.
Jack type A
Insulated wire (not supplied)
Ground wire (not supplied)
Jack type B
Insulated wire
(not supplied)
Ground wire (not supplied)
Important
If you connect an outdoor antenna, ground
from y terminal with the screw clamp. To
prevent a gas explosion, do not connect the
ground wire to a gas pipe.
Screw clamp
Screw clamp
13