Atari ProSystem Owner's Manual page 8

If
Your
Television
Has a
Short
Round
Cable:
A.
Attach the
television's
short
loose-hanging cable to the
flat
twin-
connector next
lead
antenna
wire:
television.
Disconnect
it
from
the
teievi-
B.
If
you
have
a
round antenna
ANTENNA
screw
terminals
on
the
TVIGAME
Switch
Box. Disconnect the
cabie
from
your
television.
C.
Connect
the twin-lead wire
from
the
TViGAME
Switch
Box
to the
VHP
antenna
terminals
Screw
the cable
into
the
impedance-matching
transformer.
^
on
your
television
set.
Installing
the
TV/Game
Switch
Box