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Signal Strength. The signal strength meter
is
a series
of five bars. The number of illuminated bars increases with
the strength of the received signal. If only one or two bars
illuminate, the signal
is
too weak for noise-free reception
in
stereo, but reception may be satisfactory
in
mono. Strong
signals are indicated by four or five illuminated bars. If fewer
than four bars are illuminated when you are correctly tuned
to
a station, then you are not getting all of the noise-quieting
in
stereo that the tuner is capable of, and a better antenna
(or a re-aiming of your present antenna)
is
needed
in
order
to pull
in
a stronger signal.
Tuning. The center-tuning indicator (FM only) consists
of
an
illuminated rectangular bar (like those
in
the signal
strength meter) flanked
on
either side by a triangular pointer.
The triangular pointers illuminate to indicate that the tuning
is
within
an
FM
station's channel but not
at
the center of that
channel. The pointer shows the direction that the tuning must
be
shifted
in
order to tune the station correctly. When you are
accurately center-tuned the triangular pointer fades out and
only the middle bar is illuminated.
On
the
AM
band, tune for maximum signal strength.
6.
FM
STEREO INDICATOR
This LED illuminates when a stereo
FM
broadcast
is
being received and decoded by the tuner's multiplex decoder
circuit. Note that
if
the MONO button is engaged, all broad-
casts will
be
received
in
mono.
If
an
FM
station
is
broadcasting only
in
mono, or if a
stereo broadcast signal is too weak for reasonably noise-free
reception
in
stereo, then the tuner will automatically switch
into the mono mode, and this light will not illuminate. Also,
if you have mis-tuned away from the center of a station's
broadcast channel, the stereo decoding circuits may not lock
onto the signal and
it
may be received only
in
mono.
7.
STATION PRE-SETS
You
can store the frequencies of ten favorite stations
(5
FM and 5 AM)
in
these pre-sets, using the ENTER button.
Then, to tune those stations from day to
day,
just press the
appropriate pre-set button.
The pre-sets preserve their frequency assignments
when the power
is
switched off, or when the
AC
line cord
is
unplugged, for a period of
at
least two weeks. Thus you can
re-arrange your stereo system, or move the equipment from
room to room, without losing the pre-set frequencies. But
if
you
leave the power off for a month or more, you may have
to re-program the tuning pre-sets.
8.
ENTER
This button engages the Memory Enter mode. Use this
mode to enter the frequencies of your favorite stations
in
the ten pre-sets (five pre-sets on the
FM
band and another
group of five pre-sets
on
AM). The procedure
is
as
follows:
(1)
Decide which station you want to assign to each
pre-set.
On
each band you may arrange the stations
in
any
order that you find convenient to use or easy to remember:
alphabetical
(1
=
WABC,
2 = WCBS, 3 = WNYC
..
. ),
numerical
(1
=
BBC1,
2 = BBC2 . . . ), or in order of
increasing frequency
(1
=
89
.
7,
2 = 90.9, 3 = 95.3, etc).
If
you are not certain of the frequencies of the stations,
check the station/frequency directory
in
a local newspaper
or broadcasting guide.
(2)
Select the FM or
AM
band,
as
appropriate. Using the
Up
/Down Tuning control, manually tune to the first station
on
your list. Check the signal-strength display
(AM)
or center-
tune indicator (FM) to be sure that you have tuned precisely
to the center of the station's broadcast channel. Press the
ENTER button, then press Pre-set
#1
to store the first
station
in
the tuner's memory. (NOTE: After you press
ENTER, you will have approximately ten seconds to store a
5
·station
in
one of the pre-sets. After that interval, the ENTER
mode will automatically de-activate.)
(3)
Tune
to the second station
on
your list. Press the
ENTER button and, within ten seconds, press Pre-set
#2
to
store the second station.
(4)
Tune
to the third station
on
your list, press ENTER,
and press Pre-set
#3
to store the station. Continue
in
this
manner with any other stations that you want to store
in
the
remaining pre-sets. Then switch to the other tuning band
(FM or
AM)
and repeat the process for the second set of
five pre-sets.
Incidentally,
if
you make a mistake or change your
mind,
it
is not necessary to re-program all five pre-sets
in
sequence.
You
can re-program any pre-set simply by tuning
to the desired frequency, pressing ENTER, and pressing
the pre-set that you want to re-program.
After you finish programming the pre-sets, you may wish
to
post your list of stations and associated pre-set numbers
nearby for reference.
CAUTION:
In
day-to-day operation, be careful not
to
press the ENTER button by accident. Doing
so
will activate
the ENTER mode, and if you then press any of the pre-set
buttons you will unintentionally re-program that pre-set.
You
would then have to manually re-tune to the station
you
wanted, and re-ENTER
it
into the pre-set.
If
you press ENTER accidentally, you may wait ten
seconds for the ENTER mode to disengage. Or you can
immediately force the tuner out of the ENTER mode,
in
either of two ways: switch to the other tuning band
(e
.g.,
from
FM
to
AM
and back), or tap the
Up
/Down Tuning
rocker to change the tuned frequency.
9.
AM/
FM
This button switches between the two tuning bands:
FM
or medium-wave AM. The digital tuning display shows
the tuned frequency
in
MHz (for
FM)
or kHz (for AM).
The tuning circuit has a "last station selected" memory.
When you switch between tuning bands, the circuit automati-
cally re-tunes the last station that you were tuned to when
you previously used that band.
10. UP/DOWN TUNING
The
Up
/Down Tuning control
is
a "rocker" switch
that allows you to tune up and down the
AM
or
FM
radio
spectrum. Press the right-hand section of the rocker to tune
toward higher frequencies, or the left-hand section
to
tune
toward lower frequencies.
When the Tuning rocker
is
pressed momentarily, the
tuned frequency shifts
up
or down by one step, unless the
SEARCH mode has been engaged. (If SEARCH
is
engaged
the tuner will scan
in
a station-by-station mode rather than
in
small tuning steps.)
In
North America the size of the minimum tuning step
is
10kHz
on
the
AM
band.
In
Europe and elsewhere the
tuning step
is
9 kHz on AM. Each time the Tuning rocker
is
tapped, the tuned frequency will shift up or down by this
increment,
as
shown
on
the digital frequency display.
If
the Tuning rocker
is
held down with continuous pres-
sure rather than just being tapped, the circuit pauses briefly
and then scans rapidly up or down
in
frequency.
To
tune a broadcast signal, press continuously
on
either
side of the Tuning rocker until the tuned frequency
is
close
to
the desired broadcast frequency. Then fine-tune
in
small
increments by tapping the Tuning rocker. If you know the
exact frequency of the broadcast station, simply tune to that
frequency.
If
you don't know the exact frequency, tune to the
vicinity of the correct frequency and then observe the Signal
Strength and Tuning indicators while fine-tuning.
For
AM
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