Kenwood KT-660 User manual

AM/FM STEREO TUNER
KT-660/KT-660L
INSTRUCTION MANUAL
KENWOOD
@PRINTED IN SINGAPORE B50-8760-00(P,T.E)(G)
88/12 11109876543
Introduction
Your choice of this product indicates that you are a
devotee to excellence in sound reproduction.
We appreciate your patronage and take pride in the long
tradition of quality components.
So that you can get the most out of your unit, we suggest
that you take the time to read through this manual before
you hook up and operate your system. This will acquaint
you with operating features. and system-connection con-
siderations, so that your listening pleasure will be enhanced
right from the start. You will notice that in all aspects of
planning, engineering, styling, operating convenience and
adaptability, we have sought to anticipate your needs and
desires.
Keep this manual handy for future reference.
For your records
Record the serial number. found on the back of the unit,
in the spaces designated on the warranty card, and in the
space provided below. Refer to the model and serial
numbers whenever you call upon your dealer for informa-
tion or service on this product.
Model Serial Number
Unpacking
Unpack the unit carefully and make sure that all acces-
sories and cables are put aside so they will not be lost.
Examine the unit for any possibility of shipping damage.
if your unit is damaged or fails to operate, notify your dealer
immediately. If your unit was shipped to you directly, notify
the shipping company without delay. Only the consignee
(the person or company receiving the unit) can file a claim
against the carrier for shipping damage.
We recommend that you retain the original carton and
packing materials for use should you transport or ship the
unit in the future.
Accessories
RCA pin plug cord .
AM loop antenna ...
AM loop antenna stand
FM T shaped antenna ..
75 2/300 © Antenna adaptor ...
Contents
A\ Before applying power
& Safety precautions.
A\ Important safeguards
System connections..
Controls and indicators...
WRENN
Caution: Read the following pages marked in aA carefully to keep your safety.
Display... 8
Operating instructions . 9
in case of difficulty. 14
Specifications... . 16

Before applying power
A\ Caution: Read this page carefully to keep your safety.
important!
U.S.A,, Canada, U.K. and Europe
Units shipped to the U.S.A. and Canada are designed
for operation an 120 V AC only.
Units shipped to U.K. are designed for operation on
240 V AC only.
Units shipped to Europe are designed for operation
on 220 V AC only.
Safety precautions
Safety precaution for AC plug (For
U.S.A. and Canada)
CAUTION: To PREVENT ELECTRIC SHOCK DO NOT
USE THIS (POLARIZED) PLUG WITH AN EXTENSION CORD.
RECEPTACLE OR OTHER OUTLET UNLESS THE BLADES
CAN BE FULLY INSERTED TO PREVENT BLADE EXPOSURE.
For United Kingdom
The mains plug must be removed from the wall socket
prior to any internal examination.
important
The wires in this mains lead are coloured in accordance
with the following code:
Neutral
Live
The wires in this mains iead must be connected to the
terminals in the piug as follows:
Wire colour Plug terminal marking
Blue ..... ite N or Black
BrOWN ose ssecsssssseeeesssseneeseee L or Red
OE
Brown to
Live
Blue to t
Neutral
N |i
i
Plug j}— i
Notes:
1) Ht @ 13-amp plug is used, this must be fitted with a 5-amp
fuse.
2) If a 3-pin plug with earthing contact is used, no wire must
be connected to the E terminal.
——)
WARNING:
TO PREVENT FIRE OR ELECTRIC SHOCK,
DO NOT EXPOSE THIS APPLIANCE TO
RAIN OR MOISTURE.
Amz A
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT
REMOVE COVER (OR BACK). NO USER-SERVICEABLE PARTS INSIDE.
REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
THE LIGHTNING FLASH WITH ARROWHEAD SYMBOL. WITHIN AN EQUILATERAL,
TRIANGLE, IS INTENDED TO ALERT THE USER TO THE PRESENCE OF UNINSULATED.
“DANGEROUS VOLTAGE” WITHIN THE PRODUCT'S ENCLOSURE THAT MAY BE OF
SUFFICIENT MAGNITUDE TO CONSTITUTE A RISK OF ELECTRIC SHOCK TO PERSONS.
2° KT-660/KT-6601 (P}
THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIANGLE IS INTENDED TO ALERT
THE USER TO THE PRESENCE OF IMPORTANT OPERATING AND MAINTENANCE
(SERVICING) INSTRUCTIONS IN THE LITERATURE ACCOMPANYING THE APPLIANCE.

A\ Caution: Read this page carefully to keep your safety.
Improtant safeguards
Please read al! of the safety and operating
instructions before operating this unit. For best
results, follow-all warnings placed on the unit and
adhere to the operating and use instructions. These
safety and operating instructions should be retained
for future reference.
1.
3.
Power sources — The unit should be connect-
ed to a power supply only of the type described
in the operating instructions or as marked on the
appliance.
. Power-cord protection - Power-supply cords
should be routed so that they. are not likely to
be watked on or pinched by items placed upon
or against them, pay particular attention to cords
at plugs, convenience receptacles, and the point
where they exit from the unit.
Never pull or stretch
the cord,
ak
Ventilation ~ The unit should be situated so
that its location or position does not interfere
with its proper ventilation.
To maintain good ventilation, do not put records
ora table-cloth on the unit. Place the unit at least
10 cm away from the walls,
Water and moisture — The unit should not be
used near water - for example, near a bathtub,
washbowl, kitchen sink, laundry tub, in a wet
basement, or near a swimming pool. etc.
. Temperature ~ The unit may not function
properly if used at extremely low. or freezing
temperatures, The ideal ambient temperature is
above +5°C (41°F).
. Heat - The unit should be situated away from
heat sources such as radiators, heat registers.
stoves, or other units (including amplifiers) that
produce heat.
7.
9.
10.
Electric shock - Care should be taken so that
object do not fall and liquid are not spilled into
the enclosure throuch openings. if a metal
object, such asa hair pin or a needle, comes into
contact with the inside of this unit, a dangerous
electric shock may ‘result. For families with
children, never permit children to put anything,
especially metal, inside this unit.
Enclosure removal - Never remove the enclo-
sure. lf the interna! parts are touched accidental-
ly, a serious electric shock might occur.
AC outlets - Do not connect other audio
equipment with a power consumption Sarger
than that specified to the AC outlet on the rear
panel. Never connect other electrical units, such
as an iron or toaster, to it to prevent fire or
electric shock.
The maximum capacities of the AC outlets
provided on the rear panel is indicated on page
5.
Cleaning — Do not use volatile solvents such as
alcohol, paint thinner, gasoline, benzine, etc. to
clean the cabinet. Use a clean dry cloth.
11. Abnormal smell — ff an abnormal smell or
smoke is detected, immediately turn the pow-
er OFF and pull out the power cord. Contact
your dealer or nearest service station.
p58 POWER OFF!
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KT-660/KT-660L (FF 3

System connections
FM outdoor antenna FM indoor antenna AM outdoor antenna
———
AM loop antenna
750 coaxiat cable {3000 feeder
To AC outlet
Connect the
loop antenna
as shown,
Left ‘Amplifier Right
Speaker system pM Speaker system
FM outdoor antenna FM indoor antenna AM outdoor antenna
AM (MW/LW) loop antenna
AC outlet
752 coaxial cable Ee feeder
Supplied
Connect the
loop antenna
as shown.
Left ier Right
Amplifier
Speaker system Speaker system
4 KT-660/KT-6601 IP)

Output
Signals from the output jacks are fed to the amplifier.
Connection cables should be plugged to the amplifier
TUNER or AUX jacks. Shielded cables terminated at both
ends with RCA pin plug cord supplied with this tuner.
AC outlet (KT-660)
The AC outlets on the rear panel can be used to supply
power to other components in the system. Never connect
equipment whose power consumption exceeds the maxi-
mum value shown at each outlet.
SWITCHED: This outlet supplies power when the unit is
set to tuner mode or the built-in timer is activated.
UNSWITCHED (except some models): The outlet provides
power when the unit is plugged into an active AC wall
outlet, regardless of the setting of the POWER switch
of timer.
AC outlet (KT-660L)
SWITCHED: This outlet supplies power when the unit is
set to tuner mode or the built-in timer is activated.
SWITCHED outles
UNSWITCHED outles
Ground
For maximum safety and minimum interference connect
the GND terminal to a good earth ground if practicable.
A good earth ground is a cold water pipe or a metal stake
driven into moist earth. However, never use a gas pipe for
this purpose.
AM (MW/LW) antennas
AM (MW/LW) loop antennas
Install the AM loop antenna to the supplied loop antenna
stand and place them ona shelf, etc.. or install them in the
rack or wall with screws.
Rotate the AM loop antenna to the right or left for best
reception.
KT-660
KT-660L
Ge GO
Keep the speaker
leads and AC cord
away from the AM
loop antenna.
Loop antenna stand
Note:
Do not ptace the AM{MW/LW} loop antenna on the unit. As this
unit employs computing device. placing the AM(MW/LW} loop
antenna on the unit may result in noise generation. Place the AM
loop antenna away from the unit.
AM (MW/LW)} outdoor antennas
In steel buildings or ata great distance from the transmitter,
it may be necessary to install an outside long wire antenna.
The end of this wire should be stripped of insulation and
connected to the AM terminal. At this time. keep the loop
antenna connected.
FM antennas
Your tuner approaches the theoretical limit in.FM sensitivi-
ty. However, the performance of your system is determined
toa very large extent upon the signal conditions where the
antenna is placed. The reason is that FM broadcast signals
travel in straight paths. Therefore they can be blocked by
natural or man-made obstructions such as mountains, hills,
or buildings. At large distances from the transmitter the
curvature of the earth acts as a screen between transmitter
and receiver.
Consider the signa! conditions in planning your installation.
If you live in or near an urban area the indoor antenna
(supplied) may serve your needs adequately. However, if
favorite stations are weak due to natural obstructions, or
if you live in a building which is made of steel-reinforced
concrete (which acts as a shield) it may be necessary to
install a good outdoor antenna.
FM outdoor antenna
Consult with your dealer or service man about the best
method of selecting and erecting an outdoor FM antenna.
The choice of lead-in (feeder) wire is also important, The
flat ribbon-shaped twin lead performs well electrically, is
cheaper and is somewhat easier to handle in routing
through windows and around rooms. Coaxial cable is more
expensive, does a much better job of minimizing interfer-
ence, is less prone to the effects of weather and close-by
metal objects, and is nearly as good a signal conductor as
the ribbon type wire. The latter is particularly true of
foam-type coaxial cables. Coaxial cable is somewhat more
difficult to install at the point where the cable enters the
building. If coaxial cable is selected, make sure the antenna
is designed to drive that type of cable.
© To minimize auto-ignition noise, locate the antenna as far from heavy
traffic as possible.
@ Keep the feeder or coaxial cable as short as possible. Do not bundie
or roll up excess cable.
© The antenna should be at least two meters (6.6 feet) from reinforced
concrete walls, or metal structures.
FM outdoor antenna installation
Note:
Do not connect both the 3002 feeder and 752 coaxial cable to
the FM antenna terminal.
KT-660/KT-660L (P} 5

FM indoor antenna
Connect the T-shaped indoor antenna {supplied) to the
3000 FM ANTENNA terminals as shown in the System
connections diagram. Spread the two arms that form the
top of the “T” horizontally and hold them against conven-
ient wall surfaces. Try several locations for best results on
your favorite stations. Tape the antenna in place where the
best compromise is found between listening results and
appearance.
750 coaxial cable connection (KT-660L)
After stripping the end of your coaxial cable, mount the
supplied 750/300 FM antenna adapter on the cable as
shown. Then insert the plug into the 759 ANTENNA
terminal on the rear panel as shown in System connections
diagram.
Press the claws in the direction of
the arrows with the fingers to re-
lease the lock and pull out the
cover.
How to open the 750/3000 antenna adapter
. Arrange the coaxial cable as illustrated.
Outer shield
Outer shi
(braid)
Juter
shield
(braid) Inner
conductor
RG-59
(5C-2V)
x
Connect the processed coaxial cable to 75/3002 antenna adapter
as shown below, In the case of RG-6, insert and wind the inner
conductor around the slit. In the case of RG-59, further insert and
wind the inner conductor around the slit. Detach the collar in the
antenna adapter.
Wind the inrier
conductor here Collar
750/3008 Antenna
adapter (Supplied)
750/3000 antenna adapter
6 kT-660/KT-660L {P}
3002 ribbon type cable connection
Although the unit is designed exclusively for use with 750,
coaxial cable, it can also accept a 3000 indoor antenna
or 3000 ribbon-type lead-in cable by using the supplied
7502/3002 Antenna Adapter. Strip the plastic insulation
from the wire ends for about 10 mm (3/8 inch). Connect
the wires to the terminals on the adapter, then insert it into
the 750 ANTENNA terminal on the rear panel (see.
System connections diagram).
if you connect a 30020 feeder cable, you need not detach
the collar in the 75/3000 antenna adapter,
If the collar is detached, the sensitivity will decrease.
Note:
An FM outdoor antenna can be connected to the tuner with either
a 759 coaxial cable or 30029 ribbon feeder. For proper connec-
tion, carefully read the instruction manual for the FM outdoor
antenna.
LW CHANNEL FREQUENCY switch (KT-660L)
The LW frequency step changes in area. If the unit fails to
stop at desired LW station in auto tuning mode, set this
switch to opposite position.
STATION NAME AND PRESET switch (rear panel)
[=m : When the station name is not displayed (10 stations
for each A and B)
= : When the station name is displayed (6 stations for
each A and B).
@ This switch is factory set to the STATION NAME
position.
STATION
Refer to “Preset memory” on page 9.
Notes:
1, Operate the STATION NAME AND PRESET switch or the LW
CHANNEL FREQUENCY switch after plugging out the power
cord from the AC outlet.
2. To reset the switches equipped on the rear panel, slide the
switch to the opposite side with a screwdriver or other pointed
tool.

Controls and indicators
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KT-660
KT-660L
@ POWER switch
Press this switch to supply power. Press the switch again
to turn the power OFF.
© SLEEP timer key
Press
this
kay
to
set
sleep
timer
(up
to
60
minutes
with
10
minutes intervals).
© DISPLAY (FRQ/TIME) key
Used
to
switch
between
the
frequency
and
timer
display
modes.
@ Numeric keys (1 ~ 0)
Used to set time and program timer. Also, these keys are
used to preset broadcast stations.
@ ENTER key
Press this key to activate the station memory and clock
after entering the present time with the numeric keys.
© Tuning mode key (AUTO/MANUAL)
Press this key to select the tuning mode between AUTO
or MANUAL. in MANUAL mode, an FM stereo broadcast
is received in monaural.
@ Band selector switches
KT-660
FM: Press this switch to receive FM broadcasts.
AM: Press this switch to receive AM broadcasts.
KT-660L
FM: Press this switch to receive FM broadcasts.
MW<Press this switch to receive MW broadcasts.
LW: Press this switch to receive LW broadoasts.
@ PRESET SCAN key
When this key is pressed, each of the preset stations will
be received for several seconds sequentially. When one
presét station is being received. scanning starts from the
next preset station. If not, scanning will start from the
station preset in the A-1 channel.
© PRESET A/B selector switch
Press this switch to select the A or B preset station group.
@ DIGIT key
When inputting the station name. press this key after
selecting the character to memorize the character, and the
unit enters the standby mode to inputting the next column.
@ TUNING/CHARACTER (DOWN, UP) key
TUNING
AUTO-tuning: When the UP or DOWN side is pressed,
the frequency automatically increases or decreases until
the next station of sufficient signal strength is reached.
MANUAL (MONO} tuning: Each time the UP or DOWN
side is pressed, the displayed frequency increases or
decreases. When either side of the key is held down,
the displayed frequency. will continue to increases or
decreases until the key is released.
CHARACTOR
Station name entry: When presetting each station. the
station name (max. 4 Characters) can also be preset
along with the frequency using this key. For details, refer
to “Preset memory” on page 9 and “Station name
indication” on page 10.
® CHARACTER key
Press this key to set or release the station name input mode.
This key is valid when the unit is in the “station name
indication present” mode.
@® DIRECT tuning key
When this key is pressed, the desired broadcast can be
received by inputting the frequency of the station.
@® CLEAR key
Press this key to cancel the input mode of the time or
program timer. When this key is pressed. the input mode
returns to the previous one. In the station mode, it returns
to the first column of the four characters.
@® EXECUTE 1 = 2 key
Press this key to select the 1 or 2 program of the timer and
both 1 and 2 programs can also be selected.
Also it returns to the first column of the four characters.
@® PROGRAM 1,2 keys
Press this key to set programming timer
® ADJUST key
Press this key to adjust the clock time.
@ Display
Refer to “Display” on next page.
KT-660/KT-660L (P) 7

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@ STATION NAME/TIME display
Display the station name or ON TIME.
@® STATION NAME indicator
©® Band indicators
Indicate the reception band,
@® Frequency/time display
Displays the receiving frequency, current time, or OFF
TIME.
® Preset function indicator A/B
Indicate the preset function A or B.
@® MEMORY indicator
Lights for about 5 seconds when the ENTER key is pressed
in tuner mode.
@® Preset channel indicators
Indicate the pressed preset channel key.
SLEEP timer indicator
Lights when the sleep timer is set.
8 kt-6860/KT-6604 (P}
@® TUNED indicator
Lights when the station is tuned in correctly.
@ STEREO indicator
Lights when an AM stereo broadcast with a sufficient
signal strength is received,
@ AUTO indicator
Lights when the tuning mode is set to AUTO with the
TUNING MODE button.
@ OFF TIME indicator
Displays the OFF TIME of the program timer.
@ PROGRAM [1] [2] indicators
Blinks when setting the program timer.
@ ON TIME indicator
Displays the ON TIME of the program timer.

Operating instructions
M@ Setting the current time
1. Confirm that the frequency/time display is in the time
display made.
When the frequency/time display is in the frequency
display mode, press the DISPLAY key or the POWER
switch to turn OFF.
2. Press the ADJUST key.
The hour display of the left starts flashing.
mean
Le ht
3. Input the current time using the numeric key {1 to 0).
The clock employs 24-hour system. Press the numeric
keys as follows.
AM 9:05 Input in the order of
0-9-0-5
PM 4:50 Input in the order of
1-6-5-0
When 4 digits are input, the entire time display flashes.
To change the input digit. press the CLEAR key and
proceed the above steps again.
ass aa
4, Press the ENTER key
The time display illuminates.
illuminates
When the ENTER key is pressed, the clock starts.
Press the ENTER key according to the time signal of the
radio or telephone service.
Note: —<— <<
When the time display flashes, this indicates the power failure
occurred, At that time, reset the current time.
Listening to broadcasts
Auto tuning
1, Press the POWER switch.
2, Set the input mode of the amplifier to tuner.
3. Select the reception band with the band selector
switches.
4. Press the tuning mode key so that the AUTO indicator
lights.
5. Press UP or DOWN side of the TUNING/CHARACTER
key.
The unit starts scanning in the specified direction and
stops at a station with a sufficient signal strength.
6. Adjust the volume control of the amplifier.
Manual tuning
1. Press the POWER switch.
2. Set the input mode of the amplifier to tuner.
3. Select the reception band with the band selector
switches.
4. Press the tuning mode key so that the AUTO indicator
disappears. In the FM band, the MONO indicator lights.
5. Press UP or DOWN side of the TUNING/CHARACTER
key until the desired station is received.
When the TUNING/CHARACTER key is kept pressed,
the displayed frequency changes rapidly.
6. Adjust the volume control of the amplifier.
Direct station tuning
1. Press the DISPLAY key to set the display window to the
frequency mode.
2. Select the desired band with the band select switches
(AM/FM).
3. While the frequency indicator is displayed, press the
DIRECT tuning key.
4. Input the number of the frequency with the numeric
keys.
5. When the input frequency is within the range of the
band, the station of the input frequency is received
immediately after the final column is input.
lf the input frequency is out of the range of the band,
the frequency indicator flashes for 5 seconds, then the
display mode before pressing the DIRECT tuning key
resumes.
6. During inputting the frequency, when the incorrect
numeric key is pressed by mistake and is noticed, press
the CLEAR key to return to the standby mode for the
first column input.
@ Preset memory
With the station name displayed, a total of 12 stations can
be preset, and with the station name not displayed, a total
of 20 stations can be preset for AM or FM broadcast.
(Select the number of preset stations with the STATION
NAME AND PRESET switch located on the rear panel of
the tuner.)
How to preset
1, Press the DISPLAY key to set the display to the
frequency display mode.
2. Press the AM or FM band select switch.
3. Receive the desired station to be memorized with the
TUNING/CHARACTER key or DIRECT tuning function.
At this time, input the. station name if required, referring
to “Station Name Indication” on page 10. (This opera-
tion is possible after memorizing the frequency.)
4. Press the ENTER key.
“MEMORY” displays in the display window.
5. Select the A or B preset group with the PRESET A/B
switch.
When this is not done, the preset group which is
currently indicated is selected.
6. Within 5 seconds, press any of 1 to 6 numeric keys
{when the station name is displayed) or 1 to 0 keys (when
the station name is not displayed).
The MEMORY indicator in the display window goes off
and the preset indicator will light.
In the same way. preset the other stations. When
presetting the station into the "10" preset channel,
press the “0” numeric key.
@ Example: To memorized 90.0 MHz into. A-3 channel
{station name display mode)
1. Receive the desired station with the UP/DOWN key or
DIRECT key.
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KT-660/KT-660L (P) 9

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@ STATION NAME AND PRESET switch located on the
rear panel of the tuner
(om : When the station name is not displayed (10 stations
for each A and B)
= : When the station name is displayed {6 stations for
each A and B)
@ This switch is factory set to the STATION NAME
position.
STATION
NAME
onent __J
3
Note:
1. When the station is memorized into the preset number in which
another station has been preset, the previously-preset station
willbe cleared and the newly-preset station will be memorized.
Be sure to press the numeric key (1 to 0) after releasing the
ENTER key.
If the numeric key (1 to 0} is pressed while the ENTER key is
pressed, the same frequency may also be memorized into the
other preset channel.
2. In the station name display mode (when the STATION NAME
AND PRESET switch on the rear panel is set to “12” position).
the 7 to 0 preset channel are invalid
3. Operate the preset station number switch on the rear panel
after plugging out the power cord from the AC outlet.
4. If you perform the above operation after you have once preset
the tuning station, the preset contents will be erased.
@ Recalling the preset memory
During the tuner functions, select “A” or “B” with the A/B
select switch and press any of the numeric key. The
memorized contents corresponding to the PRESET number
pressed will be displayed.
When the A/B switch is not pressed. the memorized
contents corresponding to the preset channel of the
currently selected group will be recalled.
However, when the station name display mode is selected,
from “7” to “O" preset channel do not function.
Note:
Since the plug-in backup system is provided with this tuner, the
station frequencies preset in each preset channel key will not-be
cleared even when the POWER switch is set to the STAND BY
position.
However, when the AC power plug is disconnected from the AC
outlet, the preset frequencies will be cleared approx. 3 days later.
10 kT-660/KT-880L (P}
Preset scan
During the tuner is functioning. when the PRESET SCAN
key is pressed, each preset frequency will be received for
5 seconds sequentially.
tf no station is preset in the preset channel, the next preset
channel will be received after one second.
When any of preset channel is currently received, the
scanning starts from the next preset channel. lf not,
scanning will start from the A-1 preset channel.
Al > A2 ---- AS > AO > Bl > B2 ---- BO > BO
c {A8) (88) 1
{. ): in the STATION NAME display mode.
To release this function, press the PRESET SCAN key
again.
Last channel memory
When the POWER switch is turned ON, or when the
broadcast band {AM or FM) is changed to another, the last
received channel of each band will be received. (Last
channel memory function)
@ Station name indication
(Station name preset)
Set the select switch located on the rear panel of the tuner
to the STATION NAME PRESET 12 position.
Character input procedure
1. Tune to the desired station with the TUNING/CHARAC-
TER key or the DIRECT tuning method.
When the desired station has been preset, call the
station with the corresponding PRESET A/B switch and
preset channel keys.
2. Press the CHARACTER key to set the character input
mode. The first column of the character display section
begins flashing.
3. Press the TUNING/CHARACTER (UP, DOWN) key to
select the character.
4, When the desired character is displayed, press the
DIGIT key.
Flashing will shift to the next column.
5. Repeat procedure 3 and 4 for four times to complete
inputting. The character input mode will be released.
@ When the incorrect character input by mistake and is
noticed, press the CLEAR key to return to the standby
mode for the first column input.
@ Even in the middle of inputting. pressing the CHARAC-
TER key again will release the character input mode. At
this time, the data which has been input is valid.
@ When the preset channel to be named is being received,
the character data will be automatically stored in the
currently-displayed preset channel after inputting oper-
ation is completed.
Notes:
1. Disconnect the power plug of the tuner from the AC outlet
before changing the setting of the select switch for the number
of preset stations.
2. When the above operation is performed after the broadcast
station has been preset, the preset contents will be cleared.

To receive the 90.0 MHz FM broadcast and
input the characters “C, B, E” when the
station other than the preset channel mem-
ories is received. Shows the indicator
flashing.
Example 1:
. Tune to 90.0 MHz FM broadcast.
PROGRAM rr)
fu Ae Be
i al
STATION wane
. Press the CHARACTER key.
PROGRAM
& STATION NAME
Press the TUNING/CHARACTER key three times to
select “C".
~7?A*BOC
a a
~oonnar
Seu Oo
PROGRAM
is NAME,
. Press thé DIGIT key.
PROGRAM
r
t
STATION NAME
_ TUNING/CHARACTER UP key twice times to select
- 7? A+B
PROGRAM
: :
cep
is
. Press the DIGIT key.
auro
OT Pe Oo
abt a
corr mare far)
r OTT on Bo
C awe ee 4
stavion ite
. TUNING/CHARACTER UP key five times to select “E”.
~7B?C2?DSE
PROGRAM
c ES ~
_ As the fourth column should be left blank. press the
DIGIT key twice or press the CHARACTER key.
PROGRAM AUTO.
rope ® OCP OH
CRE FT CEU
STATION NAME
After inputting is completed. memorize it into the
desired preset channel according to the “Preset Station
Tuning” section.
Example 2: To change the station name from “FHN8”
for 810 kHz AM broadcast memorized in
B-2 preset channel to “FEN”.
_ Recall the B-2 preset channel with the PRESET A/B
switch and the PRESET button according to “Recalling
the Preset Memory”.
PRocRaM
FHNG ™
STATION NAME,
—
wer © Lon
. Press the CHARACTER key.
PROGRAM [Fiinen)
pone
gd 10 ew @ On
YEH *
STATION NAME.
_ Press the DIGIT key to shift the flashing the character
to the next column since the first character “F” should
be left as it is.
PROGRAM
FSB NG”
STATION NAME
Press the TUNING/CHARACTER (DOWN) key to select
a
H>G>FoE
PROGRAM
FREEN go
STAVION NAME
—
GG wal.
. Press the DIGIT key twice
_ Press the TUNING/CHARACTER key to select a blank.
PROGRAM
Cen oe Qo in res),
rea O fUow BE a
STATION nai
KT-660/AKT-660L (P) 17

7. Press the DIGIT key or press the CHARACTER key.
a
i |
EN
STATION NAME
c
'
@ Operating timer
Setting the program timer
Timer setup procedure (The same procedure can be used
for bath PROGRAM 1 and PROGRAM 2.3
The timer can be set only when the POWER switch has
been turned ON. When power is OFF, it is possible only
to check the program contents.
During setup, the station which has been received is not
changed, and the AUTO and band indications remain the
same.
@ Example 1: To set a Preset channel (B-2) in Timer 1 with
ON TIME 8:45 and OFF TIME 9:35
1. Current condition
Reception of FM 90.0 MHz stored in A-3.
‘PROGRAM
avo (Stereo) [zsen]
CPT TT Thane
Le Le ut
STATION NAME
2. Displaying PROGRAM
Press the PROGRAM 1 key.
ON TIME PROGRAM
OFF TIME AUTO
man
uuu
Boo”
@ When the PROGRAM 1 key is pressed, the “1” indicator
flashes and the display shows the content of Program
Timer 1.
The above display continues for approx. 5 seconds.
During this period, press the ENTER key during to enter
the Timer Setup mode.
When the PROGRAM 1 key is pressed during this display
period, the previous returns to the previous status.
3. Starting setup
Press the ENTER key.
ON TIME jr
mao
rou
OFF TIME auto
nan
udu
@ When the ENTER key is pressed, the “PROGRAM 1”
indicator flashes to indicate that the Timer Setup mode.
At the same time. the first digit of the ON TIME display
Starts to flash, indicating the entry standby for this digit.
If you find it unnecessary to change the current ON
TIME, just press the ENTER key: you can then start the
entry of the OFF TIME.
4. Entry of ON TIME
Press numeric. key “O".
Lean GD
esi miaw)
ON TIME: OFF TIME AUTO
mia
voeou
nm
ty ihos ta oF
12 kT-660/KT-660L (P)
When “0” is pressed, the first digit of the ON TIME
display goes “0” which is lit continuously, and the
second digit starts flashing.
When you made a mistake in entry, press the CLEAR
key; the display returns to the stage of entry standby for
the first digit.
. Entry of ON TIME Using numeric keys
Enter “4” then “'
within 15 seconds.
6”. Press these numeric keys
orr Tiwe auto. [STEREO} [TUNED]
—
~~ Onan
uuu be
When four ON TIME digits have been entered, all the
ON TIME digits flashes to indicate the end of ON TIME
entry. If the setup is correct, press the ENTER key.
lf the desired ON TIME is obtained by entering until the
third digit. press the ENTER key after the third digit.
To modify the ON TIME entered. press the CLEAR key;
the display returns to the stage or entry standby for the
first digit.
|. Setting of ON TIME
Press the ENTER key.
ore ime auto [Sie
7A
u
ue
When the ON TIME entry is finished, the ON TIME
display lights continuously and the first digit of the OFF
TIME display starts to flash, indicating the entry standby
for this digit. If you found entry mistake at this time,
press the CLEAR key; the display returns to the stage
of entry standby for the first digit
. Entry and setting of OFF TIME
Press numeric keys “0”, “9”, "3" then “5”, and press
the ENTER key
OFF TIME AUTO
When the ENTER key is pressed, the OFF TIME display
lights continuously, indicating the end of OFF TIME
entry. In its place, the preset channel display starts
flashing to indicate the standby for preset channel entry.
If you found entry mistake at this time, press the CLEAR
key; the first press returns the display to the stage of
entry standby for the OFF TIME first digit, and the
second press returns it to the stage of entry standby for
the ON TIME first digit again.
‘On TIME
Off ™ OOIe
udt3 O95
. Entry of preset channel
Select the preset channel group by pressing the PRESET
A/B switch, then press numeric channel key “2”.
on ime PERO TIS © ork rE uo
G935 apt
cays”

@ When the PRESET A/B switch is pressed, the other
indicator that the currently-flashing indicator lights (A
+ B, or B -> A). When the numeric key is pressed, the
figure of the preset channel changes to that pressed.
@ If you found entry mistake at this time, press the CLEAR
kay: the display returns to the status before the PRESET
A/B switch was pressed.
9. End of timer setup
Press the ENTER key.
ON TIME PROGRAM [] OFF TIME AUTO
oOOu07° ™ mMOAC
GCa45" OF35 ad.
@ When the preset channel number has been entered,
press the ENTER key.
The preset channel and PROGRAM indicators light
continuously, indicating the end of timer setup. The
above display continues for approx. 5 seconds, and the
display returns to the initial status.
Notes:
1, Ifthe PROGRAM 1 key is pressed during timer setup operation,
the timer setup mode is canceled and the display returns to
the initial status.
2, When the station name display is applied, it is possible to select
preset channels 1 to 6 for both A and B.
Using the program timer
Both timer Both timer
programs (1) | | programs [i].
and [Z] exeow- }|[2] non-execu-
tion mode Ton mode
. Press the POWER switch so that the unit is in the
standby made.
2. Press the EXECUTE 1 = 2 key to select the program
timer to be used.
To use program timer 1 or 2, press the EXECUTE 1 =
2 key so that the PROGRAM 1 or 2 indicator light.
3. When the preset ON TIME is reached, the program timer
turns ON and the selected preset station is received.
4, When the preset OFF TIME is reached, the program
timer turns OFF.
To cancel the program timer
Press the EXECUTE 1 = 2 key so that the PROGRAM 1
and/or 2 indicator goes off.
To check the contents of timer program
1. Press the PROGRAM 1 or 2 key in which the program
to be checked is input. The contents of the selected
program is displayed for 5 seconds.
2. Then the display before the key is pressed resumes.
Even in the STAND BY mode {when only the time is
displayed), pressing PROGRAM 1 or 2 key will display
the program contents for 5 seconds, then the time
display will resume.
Setting the timer is possible only when the POWER
switch is turned ON, When the POWER is OFF, only the
program contents can be checked.
Notes:
1. The timer program functions only when the PROGRAM [1 J or
[2] indicator lights.
2. When the PROGRAM key is pressed or the POWER switch is
pressed ON/OFF during the timer is activated, the program
timer will not function correctly.
3. Be sure not to overlap the times when setting the programs
1 and 2. (Refer to the example in the figure on the right.)
+ When both 1 and 2 programs are input, the program 2 has a
priority.
+ When the ON-time for the program 1 reaches during the
program 2 is activated, the program 1 does not function.
+ When the ON-time for the program 2 reaches during the
program 1 is activated, the program 2 begins functioning.
4, When functioning both program 1 and 2 sequentially, be sure
to leave 1 minute between the OFF-time of the first program
and the ON-time of the second program.
Example: When receiving 90.00 MHz FM broadcast for one
hour from 8 o’clock and 954 kHz AM broadcast for
one hour from 9 o'clock, set the ON-time for the
program 1 to 8:00 and the OFF-time to 8:59, and
set the ON-time for the program 2 to 9:00 and the
OFF-time to 9:59.
5. When the timer function is activated. The same operation will
be performed on the same times every day. When the timer
operation is not required, release the timer function according
to “To Deactivate the Timer Function”.
6. On listening to the tuner with the timer function activated
{when the PROGRAM
time comes, the timer operation will function.
At this time, the receiving station will be changed to the station
which has been programmed for the timer, When recording the
broadcast from the tuner, be sure to confirm the programmed
contents of the timer.
7. The programmed contents of the timer cannot be canceled.
When the timer is not used, be sure to release the timer
function according to “To Deactivate the Timer Function”.
Using the sleep timer
The sleep timer can be used to turn the power OFF after
up to 60 minutes. The power OFF TIME can be set with
an interval of 10 minutes.
1. Press the SLEEP key.
The SLEEP indicator lights and 60 is displayed.
2. To turn the power OFF within 60 minutes, press the
SLEEP key.
The displayed number changes as follows.
POWER POWER
ON OFF
60 + 50 + 40 + 30 + 20 + 10 + O
Notes:
1. The sleep timer has priority over the program timer.
2. When the remaining time or the SLEEP TIMER is displayed,
pressing any of the preset channel key, TUNING/CHARACTER
key, band select switch, etc. will display the frequency, then
5 seconds leter, the remaining time display resumes.
3. When the remaining time is within 10 minutes, pressing the
SLEEP key will turn the power OFF
4, To release the SLEEP timer. press the POWER switch to turn
the power OFF.
5. When the time is not set. the SLEEP timer is not displayed.
KT-660/KT-660L 1P} 13

In case of difficulty
If your tuner should not perform as expected, consult the table below to see if the problem can be corrected before seeking
help from your dealer or service representative.
Occurs during AM reception only
Possible cause
Remedy
High-frequency whistle especially at
night.
Interference from TV set.
Beats from adjacent AM (MW/LW)
station.
Turn off TV set, if problem disap-
pears try relocating TV set.
impossible to eliminate, but try HIGH
filter of your amplifier.
Intermittent buzz or cracking sound. Lightning.
Fluorescent lamps starting.
Appliance or furnace starting.
No remedy.
Try reversing AC plug
Try reversing AC plug.
Occurs during FM reception only
Possible cause
Remedy
Hiss that gets worse in stereo
reception.
Very weak antenna input signal.
Consider an outdoor antenna installa-
tion. In areas remote from the trans-
mitter a 5 to 8 element antenna de-
signed exclusively for FM is
suggested.
Rhythmic static or popping noises
Automobile ignition noise, especially
evident when receiving weak signals.
Review antenna installation. Site the
antenna as far from the street as
possible and use coaxial cable.
STEREO indicator fails light during
stereo broadcast.
Possible trouble with the
Synthesizer
Another possible effect of a very
weak signal.
Possible cause
Antenna system needs attention (see
j above.)
Remedy
Receiving is impossible even when
the numeric key is pressed
Frequency for the broadcast station
is not memorized.
Check the station frequency and
memorize it correctly.
The broadgast station frequency
which has been memorized in the
numeric key is cleared.
14° KT-660/KT-660L (P}
Backup memory does not function
due to poor or incorrect connection
of the power cord.
Be sure to connect the power cord
to the wall outlet, etc, from which
the AC power is always supplied.

Specifications
KT-660
FM Tuner Section
Tuning frequency range
Antenna impedance
87.5 MHz — 108 MHz
300 ohms balanced
75 ohms unbalanced
Sensitivity .
Usable sensitivity (IHF);
Mono ........ =
50 dB quieting sensit
Mono:
Stereo:
Total harmonic distorition
Mono: (75 kHz Dev.}
0.95nV 110.8 BA
3uV (14.7 dBA
43uV (39.0 dBi
1,000 HZ... svseseeee 0.3%
50 Hz - 10,000 Hz ae 05%
Stereo: (75 kHz Dev.)
1,000 Hz ice 0.3%
50 Hz ~ 10,000 Hz eeerenres «Or.
Signal-to-Noise ratio
Mono: (75 kHz Dev.)
65 dBf input... iecutbees 76 dB
85 dBf input . niibdnasiteiiag 2 EPS
Stereo: (75 kHz Dev}
65 dBf input es a. 73 dB
85 dBf input . 75 dB
Capture ratio 1.2 4B
Altemate channel selectivity
tHE: = 400 kHz sos 50 dB
Stereo peparetion
4 . 40 dB
5O Hz - 7 10,000 Hz 35 dB
Frequency response
30 Hz - 15,000 Hz ....... . +0.5 dB - 2 dB
Image rejection ratio (98 MHz) . 60 dB
IF rejection ratio (98 MHz) .......... 95 dB
Spurious rejection ratio (98
MHz) ... 80 dB
AM suppression rati w» 70 dB
Sub-cerrier suppression ratio ....... 37 dB
Output level/impedance
at 1,000 Hz, 100% Dev. .......
0.6V/3.3 kohms
AM Tuner Section
Tuning frequency range «0. 531 KHz — 1,602 kHz
(9 kHz step)
530 kHz - 1,610 kHz
(10 kHz step}
Usable sensitivity .. » 14pV (400pV/m)
Signal-to-Noise ratio
(30% Mod; 1 mV input) ........... 50 dB
Total harmonic distortion ........... 0.5%
Image rejection ratio . 40 dB
Selectivity WHF) ococsnuen 25 dB
Output level/impedance
at 400 Hz, 30% mod . 0.18V/3.3 kohms
General
Power consumption .
Dimensions .
. 12W
.. W: 420 mm (16-9/16"}
H: 65 mm (2-9/16")
D: 251 mm (9-7/8")
KT-660L
FM Tuner Section
Tuning frequency range ......
Antenna impedance
Sensitivity (DIN)
Mono: S/N 26 dB, 40 kHz Dev. 1.0 pv
Stereo: S/N 46 dB, 46 kHz Dev... 29 nV
. 87.5 MHz ~ 108 MHz
75 ohms unbalanced
Limiting level
-3 dB point, 40 kHz Dev.......... 0.54V
Total harmonic distorition (DIN)
Mono: 1 kHz, 40 kHz Dev...... 0.15%
Stereo: 1 kHz, 46 kHz Dev ... 2%
Signal-to-Noise ratio unwei hted {DIN)
Mono: 40 kHz Dev; 1 mV input .. 68 dB
Stereo: 46 kHz Dev; 1 mV input. 64 dB
Signal-to-Noise ratio weighted (DIN)
Mono: 40 kHz Dev.; 1 mV input .. 68 dB
Stereo: 46 kHz Dev.; 1 mV input . 63 dB
Capture ratio ......... 1.8 dB
Altemate channel selectivity - 64 dB (DIN: +300kHz2)
FM Stereo separation: 1mV input (DIN)
1,000 Hz 50 dB
6.300 Hz 36 dB
Frequency responsi
30 Hz - 15 kHz
Image rejection ratio (98 MHz}
IF rejection ratio (98 MHz) . 95 dB
Spurious rejection ratio (98 . 100 dB
AM suppression ratio ............000. 70 dB
Sub-carrier suppression ratio.
do. 19 kHz, 46 kHz Dev.
do, 38 kHz, 46 kHz Dev.
Output level/impedance
at 1,000 Hz, 100% Dev.
MW Tuner Section
Tuning frequency range ......
Usable sensitivity
Signal-to-Noise ratio
(30% Mod; 1 mV input)
Total harmonic distortion .........
Image rejection ratio .....
Selectivity (IHF)
Output level/impedance
at 400 Hz, 30% mod
+0.5 dB - 2.5 dB
75 dB
70 0B
. 75 dB
. 0.6V/3.3 kohms
531 kHz - 1,602 kHz
14 pV (4004V/m}
50 dB
0.5%
40 dB
25 dB
. 0.18V/3.3 kohms
LW Tuner Section
Tuning frequency range 153 kHz ~ 281 kHz
(1_kHz step)
17 HV {8004V/m)
Usable sensitivity ...ccccccccssecsnnes
Signal-to-Noise ratio
(30% Mod; 1 mV input)........ 50 dB
Total harmonic distortion ... sve 0.5%
tmage rejection ratio ...... - 36 dB
Selectivity VHF) oc 30 dB
Output level/impedance
at 400 Hz, 30% mod 0.18V/3.3 kohms
General
Power consumption ..... coe 12W
Dimensions ......... 7 W: 440 mm (17-
Weight (Net) ....... sintnatne Oct cRG Be een Saviet
D: 251 mm (9-7/8)
Weight (Net) 3.1kg
Note: as
Kenwood follo
a policy of continuous advancements in development. For this reason specifications may be changed without notice.
KT-860/KT-660L (P) 15

KENWOOD