Kenwood TS-680S User manual

GOO/AN>)I
HF TRANSCEIVER
TS-140S
MULT! BANDER
TS-680S
INSTRUCTION MANUAL
KENWOOD CORPORATION

Thank you for purchasing this new transceiver.
IMPORTANT:
Please read this instruction Manual carefully before
placing the unit in service.
SAVE THIS INSTRUCTION MANUAL.
The following explicit definitions apply in this
manual:
Note : If disregarded, inconvenience only, no
risk of equipment damage or personal in-
jury.
Caution : Equipment damage may occur, but not
personal injury.
ST SSNS,
This Instruction Manual covers the following
models:
TS-140S : HF Transceiver
TS-680S : Ail Mode Muiti Bander
Illustrations show the TS-140S.
CONTENTS
1. BEFORE OPERATION
2. SPECIFICATIONS AND ACCESSORIES
2-1. SPECIFICATIONS
2-2, ACCESSORIES
3. INSTALLATION AND CONNECTION.
3-1, INSTALLATION
3-2. CONNECTION
4. OPERATION
4-1. OPERATING CONTROLS
4-2. RECEIVER OPERATION...
4-3. TRANSMITTER OPERATIO!
4-4.
45, ce
4-6, REPEATER
5. CIRCUIT DESCRIPTIO!
5-1. GENERAL DESCRIPTION.
5-2. TRANSMITTER SECTION
5-3. RECEIVER SECTION...
5-4. CIRCUIT BOARD DESCRIPTION ..
6. MAINTENANCE AND ADJUSTMENTS.
7. OPTIONAL ACCESSORIES ...
8. REFERENCE
5-5. BLOCK DIAGRAM .
5-6. CIRCUIT DIAGRAM
6-1. GENERAL INFORMATION
6-2. SERVICE...
6-3. CLEANING
6-4. INCASE OF DIFFICULTY..
6-5. ORDERING SPARE PARTS.
6-6, ADJUSTMENTS
7-1, CW FILTER INSTALLATION
7-2. TU-8 TONE UNIT INSTALLATION .
7-3. IF-10C INTERFACE KIT INSTALLATION,
7-4, OTHER ACCESSORIES .
8-1. ANTENNA INSTALLATION.
8-2. MOBILE OPERATION
8-3. RADIO FREQUENCY ALLOCATION.

1. BEFORE OPERATION
Safety precautions
Never remove the case unless instructed to da so in
this Manual. If the internal parts are touched ac-
cidentally, a serious electric shock might occur.
Never touch internal parts.
If a metal object, such as a hair pin or a needle,
comes into contact with the power socket on the
tear panel, a dangerous electric shock may result.
For families with children, never permit children to
put anything, especially metal, inside this unit.
-~
os
3 A
Touching the power plug when your hands are wet
may result in a serious electric shock.
—
ne
Never touch with wet hands.
JowSx
Never pull, bend or extend the power cord. This
could damage the power cord, resuiting in a broken
cord or short-circuit.
~ Atways grasp the plug.
em
In case of abnormal odor
If an abnormal odor or smoke is detected, immediate-
ly turn the power OFF and pull out the power cord,
Contact your dealer or nearest Service Station.
v
#
es
Notes on installation
Do not place the unit in a place which is exposed to
direct sunlight, near a heating appliance, etc.
O —
lis
En
Do not store or use the unit in a dusty location or in a
moist atmosphere. Select a location where there is
good ventilation.
d
=n
To maintain good ventilation, do not put anything on
top of the unit. Place the unit at least 10 cm away
from the walls.
Choose a location that is relatively free from vibra-
tion.
Cleaning
Do not use volatile solvents such as alcohol, paint
thinner, gasoline, benzine, etc. to clean the cabinet.
Use a silicone cloth or @ clean dry cloth.
Silicone cloth Thinner Benzine

re,
2.
SPECIFICATIONS
AND
ACCESSORIES
2-1. SPECIFICATIONS
Specifications ee TS-1408 TS-6808
ode
J3E
(LSB,
USB),
A1A
(CW),
ABE (AM), F3E (FM)
Antenna impedance 50 ohms
Power requirement | 12 to 16 VDC (13.8 VDE reference) |
Grounding ~ Negative l
_ Receive made with no 1.5A : i
& | current drain input signal a
é _ Transmit mode 204
Operating temperature =10 to +50°C (+14 to +122°F)
Frequency stability — Less than £10 PPM
Frequency accuracy _ | Less than +10 PPM
Dimensions (W x H xD) (Projections included) | a ree 1O ee et? "
Weight ~ 6.1kg (13.4 bs) !
: 160 mband 1B to 2.0 MHe '
80 m band 3.5 to 4.0 MHz
40 m band 7.0 10 7.3. MHz
30 m band _ 10.1 1010.15 MHz
crequeney range 20 m band “14.0 1014.35 MHz
17 m band 18.068 to 18.168 MHz
18 m band 21.0 1021.45 MHz
12 m band 24.89 to24.99 MHz
10 m band 28.0 to29.7 MHz
6 m band —— | 50.010 54.0 MHz
[ sss HOW 1 100W
160
m
band
~
cw
100W
#t
H
15 m band eee
AM 40W 4
5 12 m band 388. ow = 100 W ae
= [ - AM i _40w
& Output power | _SS8 100 W 95 Ww —
cw 95 W
10 m band
FM 50 W
AM ; _ 40w
& mband ___SSB. CW - FM — 10 W i
AM — aw
LSB, USB Balanced modulation
Modulation FM Reactance modulation
aM Low level modulation
| Spurious radiation (Cw _ 1.9 MHz to 29.7 MHz __Less than — 40 48
50 MHz to 54 MHz — Less than —60 dB
Carrier suppression More than 40 dB (with 1.5 kHz reference)
Unwanted sideband suppression More than 50 dB (with 1.5 kHz reference)
Maximum frequency deviation (FM) £5 kHz
Frequency response {—6 dB) _ 400 to 2600 Hz
Microphone impedance ; 500 ohms to 50 ka

Specifications ne Model Ts-1408 Ts-6808
| circuitry : Double conversion superheterodyne
" Frequency range 500 kHz to 30 MHz ane a 2 we
intermediate frequency 1st: 40.055 MHz, 2nd: 455 kHz
I 800 kH? to 1.6 MHz “Less than 3.98 nV
| LSB, USB, CW [1.6 MHz to 21.5 MHz ____Less than 0.26 wv
| fat 10 dB S+N/N) [21.6 MHz to 30 MHz | Less than 0.25 xV_| Less than 0.18 pV »2
i 60 MHzta54MHz |) Less than 0.16 pV +2
_ [ 600 kHz to 1.6 MHz Less than 39.8 pV ~
Sensitivity AM 1.6 Mez to 21.5 Miz Less than 2.5 nV
| (at 10.d8S+N/N) | 21.5 MHz to30 MHz | Less than 2.5 .V_| Less than 1.78 pV «2
. | 50 MHz to 54 MHz = Less than 1.58 xV «2|
2) FM 21.5 MHz to 30 MHz_| Less than 0.35 »V_| Less than 0.18 pV «2
ce (at 12 dB SINAD) ~— | 50 MHz to 54 MHz — Less than 0.18 pV +2
; LSB, USB, CW 6 dB: 2.2 kHz, —60 dB: 4.4 kHz
Selectivity 7 AM =6 dB: 6 kHz, —50 dB: 18 kHz
— FM i —6 dB: 12 kHz, — 50 dB: 25 kHz
Image ratia More than 50 dB
—— ae |
Ist IF rejection More than 50 dB
IF SHIFT variable range More than +1.2 kHz
~ 10 Hz STEP "More than £ 1.2 kH?
RIT variable range a
po nse 20 Hz STEP More than *2.5 kHz
Squelch sensitivity (EM) Less than 0.32 4V
' Output 1.5 W across 8 ohms load (10% distortion)
Output load impedance _ 7 _ 8 ~ 16 ohms
Notes: - soe n=:
1. *1: The output power on the 160 m band is limitted to 10 W depending on local regulations.
2. *2: This is valuable when the RF AMP switch is turned ON.
3. Circuit and ratings are subject to change without notice due to advancements in technology.
2-2. ACCESSORIES
Unpack your TS-140S/680S carefully and confirm that it is supplied with the following accessories.
Dynamic microphone (Except European and U.K. version) .191-0352-05.. ea.
DIN plug (7-pin) -E07-0751-05 ea.
DIN plug (13-pin). -E07-1351-05 ea.
DC power cable assembly -E30-2065-05 ea.
Calibration cable. -E31-2154-05 ea.
Fuse (20A).... -FO5-2036-05 .. ea.
Instruction manual -B50-8199-XX . copy
Warranty card... ea.
After unpacking
Shipping container:
Save the boxes and packing in the event your unit needs to be transported for remote operation, maintenance, or
service.

3. INSTALLATION AND CONNECTION
3-1. INSTALLATION
3-1-1. Bail
The transceiver can be elevated for operating conve-
nience.
Caution:
Do not use the bail to carry the transceiver.
3-2. CONNECTION
3-2-1. Fixed Station
The TS-140S/680S requires more than 20A at
13.8 VDC when transmitting at full power. Use the
PS-50 or PS-430 power supply far fixed station
operation.
A. Rear Panel
To antenna “chee
1S-1408_
SP-430
To
the
external
appiiences
———$=_———|
¥§
y
To
AC
outlet
To antenna tuner
By
Orne
Data
communications
device
SS
EXCITER, TS-140/680S
j
Ha
CECE
bono
265
iy JoGe
=e ; Z
~~] ot
BLACK
AC LINE
AED
GROUND
BUSS
RF
OUTPUT
(AUTON:
Do not connect the power cable unless the
‘TL-922A POWER switch is set to the OFF
TL-922A Interconnection to TS-140S/680S — Peston:

(1) Antenna
Caution:
Protect your equipment—Use a LIGHTNING AR-
RESTER.
The type of antenna that is used will greatly affect
the performance of the transceiver. Use a properly
adjusted antenna, of good quality, to enable your
transceiver to perform at its best. The antenna input
impedance is 50 ohms. Use 50-ohm coaxial cable
such as 5D-2¥V for this connection. If the antenna is
far from the transceiver the use of low loss coaxial
cable, such as 5D-2V is recommended. Match the
impedance of the coaxial cable and that of the anten-
na so that the SWR is less than 1.5 to t. The protec-
tion circuit in the transceiver will activate if the SWR
is particularly poor (greater than 3 to 1}. High SWR
value will cause transmitter output to drop, and may
lead to TVI or BCI reports.
(2) Grounding
Caution:
Never use a gas pipe or electrical conduit pipe.
Notes:
1. A ground connection that is a 1/4 wavelength or
its multiple may provide a goad DC ground, but it
will nat provide a good AF ground.
2. A city water pipe cannot be used as a goad earth
in some cases.
Making a good earth connection is important for
preventing dangers such as electric shock and for
emitting a high quality signal with minimum spurious
radiation, Bury a commercially available ground rod
or copper plate under the ground and connect it to
the GND terminal. A thick wire, cut as short as possi-
ble, should be used for the connection. To make a
good earth connection, connect the GND terminal to
a grounded metal water pipe.
{3} External speaker
The TS-140S/680S includes a built-in speaker. If
you would like to use an external speaker, such as
the SP-430, it may be connected to the EXT SP jack
on the rear of the radio. The speaker may be any
good 8 chm permanent magnet type speaker. The
diameter should be at least 4 inches for good audio
quality. If you plan on using a speaker other than the
SP-430 it should be equipped with a miniature
phone jack plug.
The internal speaker is disabled when the external
speaker plug is inserted into the receptacle.
(4) Key connection
Your key should be connected as illustrated in the
figure below. When using an electronic keyer, make
sure that polarity is set for positive. Always use
shielded line from the key to transceiver.
Before connecting, check that the
polarity is correct. The KEY jack pro-
vides +5.5 V. Use shielded cable.
Key connection
x 5 a
é ¢ g
a
a
g
B. Front Panel
O) Headphones e
a
Microphones
(1) Headphones
Any low-impedance (4~ 16 ohms) headphones may
be used with the transceiver. Connect the head-
phones to the front panel phone jack.
The optional HS-5 or HS-6 headphones are best
suited for use with the transceiver. Stereo type
headphones can also be used.
(2) Microphones
Any microphone with an impedance between 500
and 50 kf may be used with this transceiver.
The KENWOOD microphones MC-43S (handheld),
MC-60A, MC-80, MC-85 (table-top type) are
recommended.
You can switch send/receive by voice if a voice con-
troller is connected. (TS-680S only)
(3) Voica Controller {TS-680S only)
We recommend the use of VOX-4.
Simply connect the MIC cable to the MIC jack.
7

3-2-2. Mobile
Antenna
SP-50B or
SP-40
(For use external speaker!
A. Battery connection
Connect the supplied power cable with fuse directly
to the battery terminals. Connecting to the cigarette
lighter socket can cause a poor connection, and ex-
cessive voltage drop.
Cautions:
1. Before installing the power cable, be sure to
remove the negative lead from the battery for
safety.
2. After installation and wiring, be sure to double
check for correct installation before reconnecting
the negative lead to the battery terminal.
3. If the fuse opens, be sure to check that each con-
ductor has not been damaged by short-circuiting,
etc.
Then replace with a new fuse of the same rating.
4, After completing the wiring, wrap the fuse holder
with heat resistant tape to protect against heat
and moisture.
5. Do not remove the fuse even if the power cable is
too long.
B. Ignition Noise
The transceiver has been designed to suppress igni-
tion noise; if excessive noise is present, it may be
necessary to use suppressor spark plugs (with
resistors).
Accessories DC cable
‘Transcerver
Ce alletiA Rin
if
ee
le wes
i
Rubber grommet
To battery
@ Consider ease of operation and safety when
selecting the installation location when installing the
transceiver in a vehicle.
White/Red
Fuse
Make sure the positive (+) and negative (—) lead polarity are correct when wiring to the battery.
Engine compartment TH Passenger compartment
Black/Gray is]
y
To the transceiver
f “TT
@e Select the location
where the power cable
Battery is protected from heat,
moisture or abrasion
secure the cable.
Chassis oF
fice wall
7
Make sure the cabie
does not directly con-
tact the edge of the hole
by using a grommet.

4. OPERATION
4-1. OPERATING CONTROLS
4-1-1. Front Panel
® ® ® © O®
Note:
All segments on the Display Panel and Indicators are
shown on for this explanation.
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@ POWER switch
Press to turn the power ON or OFF.
@ Program keys
F.LOCK : The selected dial frequency and mode are
locked.
MrV : Used to transfer a frequency from
memory to the VFO.
M.IN : Used to enter data into a memory channel.
VFO/M_: Used to switch between memory or VFO
operations.
SCAN: Pressing during VFO operation will initiate
Program scan, and pressing during
memory operation will initiate memory
scan.
: Used when reentering memory channel
data, erasing a memory channel, clearing
scan, or when specifying the channels
that will be skipped during scan opera-
tions.
CLEAR
@ Meter
During receive the meter is used as an S-meter. Dur-
ing transmit the function of the meter is controlled
by the Meter switch @? , and provides either ALC
level, or PWR (power) readings.
@ M.CH/VFO CH (Memory channel/VFO
channel) control
This control is used to change the frequency in 10
kHz steps during VFO operations. This is convenient
when large changes in the operating frequency are
(With the TS-680S]]
i
22) 2 2D 49 18
required and for FM operations.
This control is also used to select the desired
memory channet during Memory Channel Operation.
® Indicators
ON AIR : Lights during transmit.
M.SCR : Lights when the M.IN key is pressed.
When the memory scroll function is active
you can review the contenis of the
Memory channels without a loss of the in-
coming receive frequency.
F.LOCK : Lights when the F.LOCK key is ON.
1MHz_: Lights when the 1 MHz step switch is ON.
(© MODE keys
These keys are used to select the desired mode of
operation. In CW mode the CW/N key is also used to
select the desired filter bandwidth. When a MODE
key is pressed the first character of that mode will be
sounded in Morse code thru the internal speaker.
This announcement can be inhibited by following the
instructions in Section 4-2-8.
LSB/USB key : Press the LSB/USB key to alternate
between LSB and USB.
: Press the CW/N key to alternate be-
tween CW (SSB filter) and N (nar-
row).
Note. ——_________
There will be no audio from the
speaker in the CW narrow position if
no optional CW filter is installed.
: Press the AM/FM key to alternate
between AM and FM.
CWIN key
AMI/FM key

@® Display Panel
The fluorescent display tube displays operational in-
formation such as the operating frequency, memory
channel information, and RIT information. (See page
13.)
@® FUNCTION keys
A/B_ : Selects VFO A or VFO B.
SPLIT: For split frequency operations; A-R, B-T (A
receive, B transmit}, or B-R, A-T.
A=B : Equalizes the frequencies and modes of VFO
A and VFO B.
@®_ RIT control
When the transmit frequency of the distant station
drifts a little bit during the QSO, but you do not wish
to alter your transmit frequency ta compensate, you
may wish to make use of the RIT control function.
This control allows shifting the receive frequency
without shifting the transmit frequency. The RIT
control allows you to shift the receiver frequency.
This control is also useful far pileups when the DX
station is transmitting a little above or belaw his
receive frequency.
The RIT step size is either 10 Hz or 20 Hz. Please
refer to Section 4-2-8 for information on how to
select the desired step size.
Notes: -
1. The RIT offset is displayed on the main display.
You can therefore preset the offset before you
actually need to use it. When you move to
another station make sure you turn OFF the RIT
switch,
2. The figure at the right illustrates that the RIT
display and the VFO display may not agree exact-
ly in all instances since the RIT and VFO tune in
10 Hz steps. The normal resolution of the VEO is
100 Hz, so if the RIT or VFO is turned slowly the
associated display may not update immediately.
You will have to tune 100 Hz to see the display
actually change.
40 IF SHIFT control
The IF SHIFT control allows you to shift the IF pass-
band of the receiver, without changing the actual
center frequency of the receiver. This control is
useful when there is interference near your center
frequency.
* USB mode
Interference
from
lower
frequencies
can
be
teduced or eliminated by rotating the IF SHIFT
control in the @ direction. This will cause the
resulting audio frequencies to have a slightly tre-
ble response, i.e.low cut filter (low frequencies
attenuated). Interference from higher frequencies
can be reduced or eliminated by rotating the IF
SHIFT control in the © direction. This will cause
the resulting audio frequencies to sound a little
bassy, i.e.high cut filter (high frequencies at-
tenuated}.
¢ LSB mode
Interference from lower frequencies can be
reduced or eliminated by rotating the IF SHIFT
control in the @ direction. This will cause the
resulting audio frequencies to sound a little
bassy, just the opposite of the effect in the USB
mode. Interference from higher frequencies can
be reduced or eliminated by rotating the IF SHIFT
control in the © direction. This will cause the
resulting audio frequencies to appear a little on
the high side, again just the opposite of the USB
mode,
Note: - -
The IF SHIFT control does not function in the AM or
FM modes.
‘Turned counterclockwise
IF titer passbang
= charactenstic
Turned clockwise
®
Signal
? Signal Signal
/
© intertering signal © Interfering signal O
RIT
-@-1F
SHIFT
RIT_@-IF
SHIFT
=
RIT_-@-iF
SHIFT
ES
Turn the knob counterclock-
wise to eliminate interference
trom signal @).
Turn the knot clockwise to
eliminate interference from
signal @).
IF SHIFT operation