GOINTFIcILS
ANTENNA INFORMATION
When
receiving
broadcast
signals, the antenna
being
used is of
great
¡mportance.
The
pos¡tion
of the antenna
is
especially
important when receiving stereo broadcasts. lncorrect antenna
placement
is
often the cause of d¡stort¡on or
insufficient
channel separation.
*
When an FM or AM
antenna
is
placed
high in
the air,
use a l¡ghtening arrestor to
protect
the
un¡Î.
FM ANTENNA
For FM
broadcast
recept¡on, the use of a
professional
type
FM outdoor antenna ¡s most ideal, but when signals are
strong, the standard
accessory
FM
di-pole antenna
will suffice.
A
variety
of antennas are available
on
the
market for use
according to the
spec¡f¡c
area
in which lhey
are
to be used.
Typical examples are:
lndoor Antenna:
For
about a
20 km
(15
mile) radius from
the
stat¡on;
3-Element
Anlenna:
For
about a 60 km
(40
mile) radius from
the
stat¡on;
S-Element
Antenna: For
about
a 80 km
(5O
milel radius from the
stal
ron.
This model is equipped
with
both 75,Çù and
300o
impedance
antenna terminals:
75O Terminals:
Use to connect a 75fl
coaxial cable from an outdoor
FM
antenna
placed
at
a
distance
away from
the
un¡t;
3OOfl Terminals:
The supplied
3O0O di-pole
antenna is
sufficient when
the
signals
are
relatively strong.
*
lf in a remote atea, o( inside a concrete
bu¡ld¡ng, etc.,
a
multi-element outdoor antenna is
recommended. ln
this
case, use
300 ohm
terminals.
*
When using TV antenna feeder
wire,
keep in
m¡nd that
the
w¡re ¡s suscept¡ble to
corrosion and
lasts only a few
years.
Check
wire
periodically
as defective
lead-in wire
can cause sound
distorl¡on or
increased noise.
*
A TV/FM Antenna can
also
be used in
place
of an
FM
antenna.
AM ANTENNA
The AM ferrite
bar antenna at the
rear of
the
un¡t ¡s
adequate for normal AM recept¡on.
Use
AM
antenna
terminals
when
signal
strength is insufficient.
FM BROADCAST RECEPTION
Make connections as outlined in CONNECTIONS.
1.
Turn on
Power
Switch.
2. Set Selector to
FM
posit¡on.
3.
Set
Mode
Switch
to FM AUTO/MUTE or
FM
MONO.
lf
the
signal strength of
the
desired stat¡on ¡s weak,
FM
MONO
posrtion
is
recommended.
4. Turn Tuning Knob to select desired
stat¡on
(FM
Stereo
Lamp will
light
to
confirm FM stereo recept¡on).
5. Tune until
the
FM
Tuning Meter indicator ¡s
at
the center
and
the
S¡gnal
Strength
Meter
reg¡sters as strongly
as
pos-
sible towards the
right
of the scale.
6.
Adjust
controls of the external amplifier.
AM BROADCAST
RECEPTION
Make connections as outlined
in
CONNECTIONS.
1. Turn on Power
Sw¡tch.
2. Set Selector to AM
position.
3. Turn Tuning Knob 1o select desired station.
4. Ad¡ust
AM Bar Antenna as
required.
Pull
out
from
rear
panel
and
pos¡t¡on
for
maximum
fidelity.
5.
Tune
until the Signal Strength Meter
registers as strongly
as
possible
towards the
right
of the scale.
6. Adiust controls of the external amplif ier.
*
As AM
broadcasts
are in monaural only,
position
of FM
Mode Switch is irrelevant-
5
6.
7.
8.
I
10
11.
12.
FM DIAL scALE
'4r
AM DIAL
SCALE
SIGNAL STRENGTH
METER
When tuning
in FM or AM broadcasts,
tune
for
ìndica-
t¡on as
far as
possible
toward the
right end of the
scale.
Movement of the
needle to left or
right indicates signal
st
rengt h.
FM CENTER TUNING
METER
Turn Tuning Knob to
select FM station while
observ¡ng
this meter. Tune
until
the
ind¡cator needle comes to
the center of the
meter. The Stereo
lndicalor Lamp
will
light
when
FM Stereo broadcasts
are
being
received.
FM
STEREO LAMP
Lights when FM stereo
broadcasts are being received.
TUNING
KNOB
Rotate this knob
for selection of desired
broadcasts.
POWER SWITCH
FM
MODE SWITCH
FM AUTO/MUTE:
Will automatically receive any
FM
broadcasts in
stereo
or monaural.
*
Cuts
noise between FM stations
and disturbances
from
weak
inputs.
FM MONO:
For listening to FlVl stereo broad-
casts ¡n monaural. Left and right
channels are mixed and
em¡tted
from
both left and
right speakers.
(When
FIV broadcast
signals are
too weak
for stereo separation,
MONO
position
fac¡litates
better
audibility.
)
FM/AM SELECTOR
SWITCH
Set to
FM
position
to receive FM broadcasts, and to
AM
posit¡on
for receiving
AM broadcasts.
AM FERRITE BAR AN iENNA
Pull out
'rom
rear
panel
for AM reception. lf signals
are not received with sufficient clarity, use an outdoor
antenna and connect to the AM antenna terminal.
FM and AM
ANTENNA
TERMINALS
(See
Antenna
lnformation).
OUTPUT
JACKS
(Left
and Right)
Connects to
inputs
of
external
amplifier
for
playback.
COI\INEGTIGINS
Connect
to
a deeply buried
underground bar.
*
Do no1 connect to a
gas
l¡ne, etc.
AM
Outdoor Antenna
300O
parallel
FM
outdoor
antenna or
FM
di-pole antenna.
*
When using a 75S¿ coaxial cable
from
the
FM outdoor anlenna. connect to
the
75S¿ antenna
terminal, and connect
the shielded
ground
wire
to
the
ground
terminal.
lf the
FM
broadcast
station
is nearby and
d¡stortion
exists,
use
the
LOC antenna
term¡nals
instead of the
DIST terminals
of
Model
AT-2250 and
connect
¡n the same
way as described
above.
B Speakers System
AT-2250
1.
2.
3.
4.
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