Akai AT-93/L User manual

· AKAI
QUARTZ SYNTHESIZER TUNER
AT-93/L

This is the Akai
1 Quartz Synthesizer
Tuner
Use the Akai tuner in combination with the other
components in the Akai
Pro-series and you will
have an excellent hi-fi system.
Features
• Stable accurate reception microcomputer con-
trolled quartz synthesizer tuner
• 20 station random preset system (See page 6)
• Sensitive large AM loop antenna (See page 8)
• Computer controlled FM anter-ma selector and 2
separate terminals for dual
FM antenna connec-
tion
(See page 8)
• FM mute system (See page 5)
• FM IF band select system (WidelNarrow, see
page 7)
• FM auto mode system (See page 5)
• 6-way tuning system including timer controlled
tuning (See page 6)
• Wide scale LED (Light Emitting Diode) signal
strength indicator
• Dual gate MOS (Metal Oxide Semi-conductor)
FET (Field Effect Transistor) incorporated Front
end
• Microcomputer controlled antenna switching
system with
PIN diodes
• Improved PLL (Phase Locked Loop) quartz syn-
thesizertuning system
• Akai original open loop multiplex circuit with DC
servo circuit for accurate reproduction of FM
stereo signals
• Large
capacity and high stable power supply
system with fast recovery diodes, low noise
zennerdiodeand high quality parts
• Separate power supply system for digital and
audio sections
• Large FL (Fluorescent) display
• Large pedestals
Table of contents
This is the Akai QuartzSynthesizerTuner ....... 1
What you should know to protectyourself
....... 2
Making the right connections
................... 3
Controls .................................. :. .. 4
Listening to the
radio. . .. ... . ... .. .. .. ... .. .. .. 5
6-waytuning system
.......................... 6
Operation details
........................... 7-8
Antennas ..................................... 9
On the RESET button ......................... 10
Problem? Let's check
........................ 10
Specifications ............................... 11
WARNING
To prevent fire or shock hazard, do not expose this
appliance to rain or moisture.
Power requirements
Power requirements for electrical equipment differ
from area to area. Please ensure that your machine
meets the power requirements
in your area.
If in doubt, consult aqualified electrician.
120 V, 60 Hz for USA and Canada
220 V, 50 Hz for Europe except UK
240 V, 50 Hz for UK and Australia
110-120 V /220-240 V, 50/60 Hz convertible for
other countries.
Voltage conversion
Models for Canada, USA, Europe, UK and Australia
are not equipped with this facility. Each machine is
preset at the factory according to its destination,
but some machines can
be set to 110 V-120 V or
220 V-240 V as required.
If your machine's voltage can be converted:
Before connecting the power cord, if the propervol-
tage for your area is not shown, turn the VOLTAGE
SELECTOR located on the rear panel of the ma-
chine with a screwdriver
so that the correct voltage
is indicated.
i[]l
22Q.240V 110·120V
'-- VOLTAGE SELECTOR-
Tuning frequency step/FM De-emphasis
conversion (Voltage
convertible models
only)
Set the tuning frequency step for your area after
changing the operating voltage.
Set the
AM FM STEP/FM DE-EMPHASIS selector
on the rear panel of the tuner as follows:
For North and South America
Setthe selector to the 10kHz175 J-Ls position
For Othercountries
Set the selector to the 9 kHz/50 J-Ls position
After changingthe position of this selector
Press the RESET button after turning on the power.
J
AMSTEP~
101< 9K
100KDsou
FM STEP/
DE·EMPHASIS

What you should
know to protect
yourself
Watch out! You mightget an electric
shock.
• Never touch the plug with wet hands.
• Always pull out by the plug and never the cord.
• Only let a qualified professional repair or re-
assemble the Akai tuner. An unauthorized
person might touch the internal parts and re-
ceive a serious electric shock.
• Never allow a child to put anything, especially
metal, into the Akai tuner.
Let's protect the Akai tunertoo.
• Use only a household AC power source. Never
use a DC power source.
• Make sure that the power consumption of each
component does not exceed the wattage speci-
fied
on the rear panel.
• If water is spilled on the Akai tuner, disconnect
it and call yourdealer.
• Make sure that the Akai tuner is well ventilated
and away from direct sunlight. Be careful not to
block the side ventilatorof the Akai tuner.
• To avoid damage to the internal circuits and the
external surface, keep away from heat (stoves,
ete.)
• Avoid using spray type insecticide near the Akai
tuner. It can damage the finish and might ignite
suddenly.
• To avoid damaging the finish, never use dena-
turated alcohol,
paint thinner or other similar
chemicals to clean the Akai tuner.
• Place the Akai tuner on a flat and solid surface.
• If you don't plan to use the Akai tuner for a
long period of time, disconnect the power
cord.
To enjoy the Akai tuner for a long time, please read
this operator's manual thoroughly.
CAUTION
To prevent electric shock, do not use this
polarized AC power plug with an extension
cord
receptacle or other outlet unless the
blades can be fully inserted to prevent blade
exposure.
2

Making the right connections
3• Turn offall the components before connecting.
• Connectthe power cord last. .
• Make sure that you connect the white P'IN-plugs
to the left (white) jacks and the red PIN-plugs to
the right (red) jacks.
• Connect everything securely. Loose connec-
tions can cause distortion.
• To prevent damage to the cords, connect and
disconnectby holding the plug, not the cord.
FM (75 n) A terminal for main FM antenna
connection
Holes for attaching
antenna holder Ground terminals for antenna
FM (75 n) Bterminal for sub FM antenna connection
o --1
[~M--~' -~
o
AM LOOP ANT terminals for AM loop antenna
connections
OUTPUT (L/R) jacks for amplifier connections Power cord and plug
FM antenna
'"
'"
[@"@@@;
i~·~~@i
AM loop antenna
Amplifier
~~t~pJ
I
.[0
o
Tuner
o
OUTPUT jacks connection
Connect the Akai tuner's OUTPUT jacks and
the amplifier's TUNER
jacks with the provid-
ed connection cord, (left and right)
T-shape FM antenna
connection
Connect the provided T-shape FM antenna
(using the FM antenna plug) to the tuner's
FM (75 n) A terminal on the rear panel, then
attach the antenna to a wall.
o AM Loop antenna connection
Open both the AM LOOP ANT terminal tabs
and insertone wire into each hole.
Close the tabs to complete the connection.
Attach the
AM loop antenna to the provided
holder or hang it where best reception can be
obtained. Refer to page 8 "How to attach the
AM loop antenna".
o After you have connected everything:
Note
Connect the power cord to the AC OUTLET of
the Akai amplifier or an audio timer, or
direct-
ly to a household AC outlet.
The provided FM antenna is a simple type. If you
want to receive FM broadcasts more clearly, we
recommend a higher grade
FM antenna (multi ele-
mentantenna, etc.) for FM reception. See page 9.
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Controls
o
8
8
POWER button
To turn the power on and off.
ANTENNA Select button
To selectthe main or sub FM antenna.
IF BAND Select button
To select the wide or narrow FM IF (Inter-
mediate Frequency) band.
BLEND
select button
To select the blend mode during FM stereo
reception.
HI-CUT button
To turn the high cut filter on or off during re-
ception.
FM AUTO button
To set the tuner to the automatic FM recep-
tion mode.
LED
(Light Emitting Diode) Indicators
Tells you which mode the tuner is in.
FL (Fluorescent) Display
Shows tuning information.
LED Indicators
SIGNAL Strength Indicators . , .
Tells you the strength of the received station s signal.
(;) 0
=~:.=;-:i~
_'""_1-..,· ... '''"'''-201
/
CD
PRESET SCAN button
To set the tuner to the automatic preset sta-
tion scan mode.
MEMORY button
To memorize preset stations. Press the
button once to memorize preset station num-
bers 1 to 10. Press the button twice to memo-
rize preset station numbers
11 to 20.
PRESET STATION Buttons and Indicators
(1/11 to 10/20)
To memorize preset stations and tune in
.memorized stations.
TUNING buttons (UP >/DOWN <)
To tune in a station manually.
SCAN MODE Select
button
To select the manual or automatic tuning
mode.
BAND Select Button
To select the band.
MUTING button
To cut inter-station noise during tuning.
HIGH CUT Indicator
Tells you the high cut filter is engaged.
I
----------
SIGNAL
I /
2 4 6 B 10
MONO
ANT B
NARROW BLEND 2 HI-CUT
ANT A WIDE;
BLEND 1
ANT A and B Indicators
/
I: /BLEND 112and MONO Indicato"
Tells you the blend mode selected.
Tells you which antenna is selected.
NARROW
and WIDE Indicators
Tells you which IF band of the tuner is selected.
4

Listening to the radio
5Basic tuning
Before proceeding, set your amplifier's inputselec-
tor to the TUNER position.
o Depress the POWER button to turn on the
• Selectthe band with the BAND button.
-===-----8 Tune in a station with the TUNING UP > or
DOWN < button.
On FM stationtuning (after setting the BAND to FM)
To set the tuner to the automatic FM reception
mode Normally set the tuner to the
FM AUTO mode with
the
FM AUTO button. The FM AUTO indicator will
light
on the FL display.
AUTO/MANUAL
i
FM AUTO
i When set to
the FM AUTO mode, the tuner auto-
matically selects STEREO or MONO according to
the station which is tuned in. The STEREO indica-
tor lights up when a stereo station is tuned in.
When a monaural signal is tuned
in, the MONO in-
dicator above the BLEND indicators will light up.
The ANTENNA select button, IF BAND select
button, BLEND select button and the HI-CUT but-
tons are set automatically by the microcomputer.
Pressing any of these buttons will cancel the FM
AUTO mode.
Eliminating inter-station noiseduring tuning
MUTING
I I
The FL (Fluorescent) display
MUTING Indicator
Tells you the muting system is engaged.
FM AUTO indicator
Tells you the tuner is in the FM
auto mode.
Press the MUTING button. The MUTING indicator
will light up and inter-station noise will be eliminat-
ed duringtuning.
• If you want to tune in a weaker station, press the
MUTING
button once again. The MUTING in-
dicator will go off and inter-station noise will be
heard during station tuning.
Band Indicators SCAN AUTO/MANU Indicator
Tells you which band is selected. Tells you which tuning mode (manual or
automatic) the tuner is set at.
: :.::,~~ TI AM MW I I I I I I I I 1kHz
r---1:STEREO -r FM LW I U U. U U MHz
LSTEREO Indicator TUNED Indicator '----- Frequency/Number display
Tells you the received station is Tells you a station is tuned in. Shows tuning frequency
in the stereo mode. (MHz/kHz) and the memorized
PRESET STATION number
(1-10/11-20).

6-wayTuning system
This quartz synthesizer tuner incorporates a 6-way
tuning system.
Before tuning in a station
Set the amplifier's input select button to the
TUNER position.
Method
* Before tuning in a station manually or automati- 6
cally, remember to select the band with the
BAND select button.
* When using a preset station button for tuning,
make sure that you have already memorized a
station.
Operation
Manual tuning
Set the SCAN MODE to MANUAL with the SCAN MODE button,
then repeatedly press the TUNING
UP > or DOWN < button until
a station is tuned in.
* To quickly change the frequency, depress the TUNING button
continuously. For fine tuning press the button repeatedly.
Automatic tuning Set the SCAN MODE to AUTO with the SCAN MODE
button, then
press the TUNING
UP <or DOWN> button once.
Preset station tuning Press the preset station button once or twice depending on
which
preset station you want to listen to.
Automatic preset scan tuning Press the PRESET SCAN button once. Automatic preset station
scanning is engaged. To stop at a preset station, press the
PRESET SCAN button again or press the PRESET STATION
button that holdsthe station you want to listen to.
Manual preset station tuning Repeatedly press the PRESET SCAN button.
Sequential station call tuning with an
Make sure you have tuned in and memorized a station at the
optional audio timer PRESET STATION number 20 before turning off the power. For
operation details see page
7.
How to memorize a preset station Selectthe band with the BAND button.
AKAI ... _, .. ,. __ ,_ ..."
Notes
• As well as memorizing the band and frequency
of a preset station, the tuner's memory system
also memorizes the ANTENNA, IF BAND,
HI-CUT and FM AUTO button's modes during
preset station memorization.
• If a PRESET STATION button is not pressed
within 5 seconds after the MEMORY button is
pressed, the memory operation will be cancelled
automatically.
• If you are using timer controlled preset station
tuning (Sequential station call function), make
sure you have memorized the desired stations
at the PRESET STATION numbers 20,
19 and
18 (See page 7).
Tune in a station you want to memorize with
theTUNING
UP < or DOWN> button.
Press the MEMORY button as follows;
Press the button once
..................... .
To memorize channels 1 to 10. The M in-
dicator and 1-10 display will appear on
the
FL display.
Press the button twice
.................... .
To memorize channels
11 to 20. The M in-
dicator and 11-20 display will appear on
the FL display.
Press the button three times
............... .
To cancel the memory operation. The
normal tuning display will appear.
Within 5 seconds
Press the PRESET STATION button where
you want to memorize the station.
When pressing a PRESET STATION button,
it's indicatorwill light up.
After completing a preset station memorization, to
memorize more stations, repeat the above
steps 1
through
4.

Operation details
7Station interferenceduring FM
reception
If interference from another nearby FM station is
botheringthe
FM station you have tuned in, use the
IF BAND select button to reduce the interference.
WIDE/NARROW
I I
NARROW
IF BAND
WIDE
Press the IF BAND select button until the NARROW
indrcator lights up.
With the IF BAND set to it's narrow setting, interfer-
ence caused by another
FM station will be reduced.
Normally set the IF BAND to WIDE for good FM
stereo station reception. The WIDE indicator will
light up.
FM reception enhancement
Use the BLEND select button to enhance reception
during differentreception conditions.
1/2/MONO
MONO
I I
BLEND 2
BLEND
BLEND 1
Press the BLEND select button as follows;
Normal stereo reception:
Repeatedly press the BLEND button until all the
indicatorsare off.
Noisy stereoreception:
Repeatedly press the BLEND button until the
BLEND 1 or 2 indicator lights up. High frequen-
cy separation and noisewill be decreased.
Weak and noisystereo
reception:
Repeatedly depress the BLEND button until the
MONO indicator lights up. The FM mode will be
setat monaural.
Eliminating high frequency noise
(hiss) duringreception
Use the HI-CUT button to eliminate high frequency
signals including noise.
EJ
ON/OFF
I HI-CUT
I
Press the HI-CUT button. The HI-CUT indicator will
light up.
Note
When the tuner is set at the
FM AUTO mode with
the
FM AUTO button (FM AUTO will be on the FL
display), using the BLEND or HI-CUT buttons toen-
hance reception is not necessary. The tuner will
adjust itself automatically to the best FM tuning
conditions. If these buttons are pressed while the
tuner is set at the
FM AUTO mode, the FM AUTO
mode will be cancelled automatically.
How to usethe Sequential station
call function
This tuner has a sequential station call function for
automatic preset station selection. 3 different sta-
tions can be memorized and then recalled when
the
tuner's power is turned on with the optional
Akai audio timer. This function can be used effec-
tively during absentee recording.
Turn on the power of all the components con-
nected to the optional Akai audio timer.
2 Memorize the stations that you want to record at
PRESET STATION numbers
20,19 and 18.
3 Prepare for sequential station call by pressing
the 10/20 button of the PRESET STATION
button twice to tune in the memorized station
number20.
4 Turn off the power with the timer mode button of
the audio timer. Power of all components will
be
turned off and then turned on again at the time
that the Akai audio timer has been programmed
for. (For operation details, please refer to the
audio timer's operator's manual.)
Notes
• In order for the sequential function to work prop-
erly, 3 stations must be memorized at PRESET
STATION numbers 20,19 and 18.
• During absentee recording, sequential recall of
preset stations begins with the station memo-
rized at
PRESET STATION number 20 and then
continues with the stations at PRESET STATION
numbers 19 and 18.
• If you are only planning to record one station
during absentee recording it is not necessary to
use the sequential station call function. Memo-
rize the station you want to record at one of the
PRESET STATION numbers between 1 and
17
and use the last station memory function to
recall the station.
• When the power is turned on after the third time,
the tuner will automatically tune in PRESET
STATION number 18.
Laststation memory
This tuner has built-in last station memory. When
the tuner's power is turned off, the tuning frequen-
cy,
band, and tuning mode of the station at the last
preset station button you have pressed will be
memorized in the memory system of
the micro-
computer. When the power is turned on again
(manually or with an audio timer), the tuner is auto-
matically set to that station. This function is useful
if you have a favorite station that you often listen to,
as itsaves having to tune that station in repeatedly.
This function can also be used to recall a station
during absentee recording.

How to attach the AM loop antenna
After finding the best position for reception by
changing the direction of the AM loop antenna and
adjusting it's height:
Attach the provided antenna holder firmly to a
wall, to the rear panel of the audio rack or to the
rear panel
of the tuner with the two provided
wood screws.
2
Attach the AM loop antenna to the antenna
holder.
Wall or rear panel of the audio rack
AM loop antenna
oWood screws
How to use the A/B FM antenna
terminals
Use the A terminal for the main FM antenna con-
nection. For best reception Akai recommends the
use of a higher grade
FM outdoor antenna for the
main antenna. Adjust it's direction so that as many
stations as possible can be received.
Use the B terminal for the sub
FM antenna connec-
tion. Use the sub
FM antenna to catch stations that
the main antenna can't pick
up by setting it in a dif-
ferent position.
Main FM antenna
FM(750)A
Sub FM antenna
FM (750) B
r--·I----ANTENNA-I-----,
FM( 'Sn)
FM( sn) AM
mm
A/B antenna selection
Use the ANTENNA select button to switch between
the A or B antenna terminals when you are using 2
FM antennas.
ANTA/B
I ANTENNA I
Cl
~
Press the ANTENNA select button. The ANT A or B
indicatorwill lightup.
How to use the FM antenna plug
Connect the FM antenna to the A (750) terminal
usingthe provided FM antenna plug.
Prepare a 75 ohm coaxial cable (3C-2V or
5C-2V; not provided) by stripping off approx. 10
mm of the outer insulation. Be careful not to cut
through the copper wire 'net' beneath it. Fold
back the copper wire and then strip off about 5
mm ofthe inner wire's insulating cover. Fig. 1
2 Rotate the
FM antenna plug and take it apart.
Pass the prepared 75 ohm coaxial cable
through part (a) as shown in Fig. 2, and then
return the copper wire to it's folded back
position.
3 Insert the inner wire of the coaxial cable through
the center hole of part (b) and stop when the
folded back copper wire surrounds the bottom
of part (b). (If there is a multiple core c~nter
strand, first twist it together to form a single
strand.) Fig. 3
4 Fit parts
(a) and (c) together in the order shown
in Fig. 4 and screw together as shown in Fig. 5.
Fig. 1
Fig. 2 Fig. 3
Outer
cOvering~ m,~2~ mm
~
..
~
Netshield ~
Insulatingcover
(a)
(b)
Fig. 4 Fig. 5
~ .. mt(C)6J
SJ .. a
(a)
8

Antennas
9 FM antennas
FM broadcasts give you
excellent sound quality,
but in order to enjoy this
quality, you must catch
the radio waves properly.
Therefore, we recommend
that you selectan antenna
appropriatefor yourarea.
T-shaped FM
antenna
The standard accessory
T-shaped FM antenna is
a simple one. Extend the
ends and move it around
to find the best location,
or attach it to a wall, for
example.
* Unless the radio
waves are strong
enough, the antenna
can't deliver the full
body of the music, or
let the Akai Tuner
show itsfull capability.
Multi-element FM
outdoor antenna
Chose the number of ele-
ments according to how
far you are from the radio
station. The greater the
number of elements, the
more signals your anten-
na will receive and this in
turn will improve directivi-
ty and lessen multipath
distortion.
Where to install
the antenna
Keep the following in
mind when you install the
antenna.
• Make sure that the an-
tenna is not in the
shadow of a building
and is away from car
traffic and high voltage
wires.
• Tune in a station and
move
the antenna
around until you obtain
the bestreception.
T-shaped
Multi-element
Multipath
distortion
Multipath distortion
occurs when radio waves
reaching the antenna
directly and indirectly (re-
flected off buildings,
mountains, etc.) from the
FM station interfere with '------------'
each other. This can
result in noise and inade-
quate channel separation.
AM loop antennas
This Akai tuner is
equipped with an AM loop
antenna. Attach this an-
tenna to a wall or to the
rear panel of the audio
rack. If good reception
cannot be obtained,
attach a wire antenna of
more then 5 m to the
LOOP ANT terminal along
with the AM loop antenna.
Grounding
You can tune in stations
without grounding, but by
grounding you can effec-
tively reduce noise such
as humming. Also, when
you use
an outdoor anten-
~--- ........
FMl7sn)
. FMI75QI
...
.
na, it helps to prevent an '------------'
electric shock. Connect
one end of the ground
wire to one of the ground
terminals (lh) and the
other end to a deeply
buried underground bar
(must be made of lead).
Do not connect to a gas
line, etc. If you live in an
apartment that is equip-
ped with a community an-
tenna terminal, grounding
is not necessary.

On the RESET button
When the tuner does not fuction properly due to in-
terference caused by static electricity, etc., press
the RESET button located on the rear panel with
the blunt end of a pen or pencil, for example. (The
tuner must be on.)
Afterwards, the tuner will be set to the following ini-
tial modes:
• Antenna
• IFBAND
• HI-CUT
• MUTING
• FM mode
• SCAN MODE
• Tuning band
• Tuning frequency
• Memorized preset
stations
A
NARROW
On
On
FM AUTO
MANU
FM
87.5 MHz
All cancelled
After the RESET button has been pressed, it will be
necessary to memorize all broadcast stations once
again.
6 RESET
Problem? Let's check
~----------------~10
Onlynoise isheard during AM (MW and LW)
or FM reception
The antenna is not properly connected.
For good reception, always connect an antenna
appropriate foryour area.
Thefrequency will not change when a
PRESET STATION button ispressed
There is nothing memorized at that PRESET
STATION button.
Memorize astation.
Thestation is
not received clearly
The antenna is incorrectly oriented or insuffi-
cientfor good reception.
For good reception, the antenna must be orient-
ed properly and be capable of catching as many
signals as possible.
Sequential station call tuning will not function
properly
The sequential station call function is not en-
gaged.
Set the 10/20 PRESET STATION button to 20
before turning offthe power.
Make sure you have memorized stations at
PRESET STATION buttons 20, 19,and 18.
The presetstation changes automatically
when the power isturned on
The SEQUENTIAL STATION CALL function is
engaged.
Press one of the PRESET STATION buttons be-
tween 1and 17 before turning off the power.
Tunerdoes not function properly
The microcomputer is malfunctioning.
Press the
RESET button on the rear panel of the
tuner.
Should a problem persist, write down the model
and serial numbers and all pertinentdata regarding
warranty coverage as well as a clear description of
the exisiting trouble. Then contact your nearest au-
thorized Akai Service Station.

Specifications
11 FM section
Tuning frequency
range
.............. 87.5 MHz to 108.0MHz
Usable sensitivity ..... 1.0 fJ-V (11.2 dBt)
Quieting sensitivity (SIN =
50 dB)
Mono
.............. 2.0 fJ-V (17.2 dBt)
Stereo ............. 22 fJ-V (38.2 dBt)
Capture ratio (Wide) ... 1.3 dB
Selectivity (±400 kHz)
ForWest Germany
Wide
............... 60dB
Narrow ............. 80 dB
Forothercountries
Wide
............... 60dB
Narrow ............. 90 dB
Image rejection ratio .. 90 dB
IF rejection ratio ...... 100 dB
Spuriousrejection
ratio
............... 100 dB
AM suppression ratio. 65 dB
Sub carrier
suppression ratio
... 70 dB
SIN
For West Germany
Mono
.............. 85 dB (at 60 dB~
Stereo ........ , .... 76 dB (at 60 dBJAl
80 dB (at 80 dBJAl
For othercountries
Mono (lHF-A)
....... 90 dB (at 60 dB JAl
Stereo (lHF-BPF) ... 80 dB (at 60 dBJAl
86 dB (at 80 dBJAl
Distortion (T.H.D., at 1 kHz)
For West Germany
Wide
............... 0.04% (Stereo)
Narrow ............. 0.05% (Mono)1
0.15% (Stereo)
For othercountries
Wide
............... 0.02% (Mono)1
0.07% (Stereo)
Narrow ............. 0.08% (Mono)1
0.3% (Stereo)
Stereo separation
..... 62 dB (Wide)1
(at 1 kHz) 55 dB (Narrow)
Frequency response
.. 0 ±0.5 dB (30 Hz to 15 kHz)
AM section (MW for AT -93L)
Tuning frequency range
For USA and
Canada
............ 530 kHz to 1 ,610kHz
For othercountries .. 531 kHz to 1,602 kHz
Sensitivity
(Loop antenna) ....... 300 fJ-Vlm
Selectivity
USA and Canada .... 50 dB (±1 0 kHz)
Othercountries ..... 40 dB (±9 kHz)
Image rejection ratio .. 40 dB
IF rejection ratio ...... 60 dB
SiN .................. 45dB
Distortion (T.H.D.)
For West Germany
.. 0.8%
For othercountries
.. 0.6%
LW section (AT -93L only)
Tuning frequency
range
.............. 144 kHz to 351 kHz
Sensitivity ............ 300 fJ-V Im
Selectivity ............ 55 dB (±9 kHz)
Image rejection ratio .. 45 dB
IF rejection ratio ...... 37 dB
S/N .................. 40dB
Distortion (T.H.DJ ..... 0.6%
Output level
FM
For West Germany .. 770 mV
(at 100% modulation)
For othercountries
.. 770 mV
(at 100% modulation)
AM ................ 250mV
(MW for AT -93L) (at 30% modulation)
Hi-cutfilter ........... -6 dB/1 0 kHz
Blend (Separation at 1 kHz)
Blend 1 ............ 20 dB
Blend 2 ............ 10dB
Power requirements
... 120 V, 60 Hz for USA and
Canada
220
V, 50 Hz for Europe
except UK
240
V, 50 Hz for UK and
Australia
110-120 V/220-240 V,
50/60Hz convertible for
othercountries
Dimensions
.......... 461 (W) x87 (H) x344 (D)
mm
(18.1 x3.4 x 13.5 inches)
Weight
............... 6.3 kg (13.9Ibs)
Standard accessories
Connection cord
...... x 1
FM di-poleantenna ... x 1
FM antenna plug ...... x 1
AM loop antenna ...... x1
Loop antenna holder
.. x 1
Wood screws
......... x 2
* For improvement purposes, specifications and
design are subjectto change without notice.