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

4) SQL (Squelch) control
Note: —
This function operates in the FM mode only.
This control is used to eliminate atmospheric noise,
and receiver static noise during no signal periods.
Slowly rotate the control clockwise to the point
where the ambient noise just disappears, and
speaker shuts off. This point is known as the squelch
threshold point. Now you will only hear output fram
the speaker when an incomming signal is present.
For weak signal reception this control should be fully
counterclockwise.
12 AF gain control
Turn the knob to increase or decrease the volume.
Clockwise rotation increases the volume and
counterclockwise rotation decreases the volume.
Note: -
The output level of the ‘‘Beep’’ is not affected by the
setting of the AF gain control.
13 CW OFF/SEMI/FULL (Break-in) switch
This switch affects the transmit/receive recovery
time. In the SEMI position the transceiver will key
when the key is depressed and remain in the transmit
pasition until a preset delay has been reached. In the
FULL position the transceiver will switch back to
receive as soon as the key is released, thus allawing
you ta copy incoming signals between characters.
The CW switch must be in the FULL position when
transmitting a carrier for antenna adjustments, etc.
44 PWR (Power) control
Power can be controlled in the FM, LSB, and USB
modes only. in CW this control functions as the
CARRIER Jevel adjustment. This control should te
adjusted so that the pointer on the meter remains
within the ALC section marked on the meter, in the
CW transmit mode, and for 40 watts of un-
modulated power output in the AM mode.
[50 MHz : 4 watts (TS-680S only)]
45 MIC gain control
Microphone
gain
can
be
adjusted
during
USB,
LSB,
and
AM
operations.
Gain
is
increased
by
moving
the
control
to
the
right.
dé RF GAIN control
This control adjusts the gain of the receiver high-
frequency amplifier section.
For normal receiver performance, and maximum
gain, this control should be all the way to the right. If
you are having trouble copying the desired signal
make a note of the stations peak S-meter reading.
Then, adjust the RF control left, so that the meter
needle is stationary at this level. Now, all signals that
were less than the desired signal will be attenuated.
such as static noise, etc., making reception easier.
\f the incoming signal pegs the S-meter you can also
reduce the receiver gain by moving the RF GAIN con-
trol to the left. The S-meter pointer will always ad-
vance up-scale as the RF control is moved to the left,
as a visual reminder that the gain of the radio has
been reduced.
Simultaneous use of the RF GAIN control.and AGC
switch
If a strong signal (such as a local station} appears in
the vicinity of the intended receive signal, the
S-meter may show unusual deflection due to the
AGC voltage developed from the strong disturbing
signal. If this occurs, move the RF GAIN control to
the left so the meter pointer remains at about the
original deflection peak and turn the AGC switch to
the FAST position. This will reduce the unwanted
AGC voltage and permit clear reception.
St NB LEVEL control
Controls the noise blanker operating level.
Use only the minimum level necessary.
48 NB 2 switch
Noise blanker 2 is used for long duration pulse noise,
like the ‘’woodpecker'’. To reduce ‘’woodpecker’’
radar noise interference, set switch NB 2 to the ON
position (NB 2’s effectiveness depends on the
specific type of interference). If you use NB 2 for
short duration pulse noise, the receive tone may
become distorted, making it difficult to hear.
Unfortunately no noise blanker can remove all dif-
ferent types of interference: but the two noise
blankers that have been provided in the TS-
140S/6805 are effective in most cases.
Wf there is no ‘’woodpecker’’ present, the switch
should be in the OFF position.
19 NB 1 switch
For
pulse
type
noise,
such
as
generated
by
automotive
ignition
systems,
turn
the
NB
1
switch
ON.
When pulsating noise, such as that caused by
automobile ignitions is encountered, place the NB 1
switch ON.
This switch will not help to eliminate atomospheric
or line noises, only pulse type noise.
20 RIT switch
Press to turn the RIT ON or OFF.
2) 1 MHz switch
This switch is used to determine if the UP/DOWN
switches will function in 1 MHz steps or only thru
the amateur bands. When the 1 MHz step position is
selected, the 1 MHz indicator will light.
22 UP/DOWN switches
Pressing the UP switch increases the frequency, and
pressing the DOWN switch decreases it.

@
TUNING
knob
(VFO)
Rotate
the
knob
to
select
the
desired
frequency.
Fast
tuning
is
possible
by
rotating
the
knob
rapidiy.
This
knob
may
also
be
used
to
select
the
desired
memory
channel.
The
diat
drag
is
adjustable
by
holding
the
outside
knob
and
turning
the
inside
knob
clockwise
to
increase
drag,
and
counterclockwise
to
decrease
drag.
@
VOX
switch
(With
the
TS-1408)
VOX
{Voice
Operated
Keying)
operation
is
possible
in
LSB,
USB,
FM
or
AM
operations.
To
activate
the
VOX
circuitry
place
the
VOX
switch
ON.
RF
AMP
switch
(With
the
TS-680S)
Depress
this
control
when
receiving
weak
signals,
Note:
—.
The
RF
amplifier
does
not
function
below
21
-5
MHz
even
if
this
switch
is
ON.
@ AGC switch
This
switch
selects
the
operating
time
constant
of
the
AGC
(Automatic
Gain
Control)
circuit.
When
the
AGC
switch
is
set
to
SLOW,
the
receiver
gain
and
S-meter
readings
will
react
slowly
to
large
input
changes,
and
when
set
to
FAST,
the
receiver
gain
and
S-meter
will
react
quickly
to
changes
in
the
input
signal
level.
The
normal
position
when
using
all
modes
is
the
SLOW
position.
When
working
any
of
the
following
you
might
wish
to
use
the
FAST
position,
©
When
tuning
with
the
TUNING
dial.
¢
When
receiving
weak
signals,
°
When
a
high-speed
CW
signal
is
being
received.
Note:
—
=
This
switch
is
disabled
during
FM
operations.
@@
ATT
(Attenuator)
switch
The
incoming
receive
signal
level
is
attenuated
by
approximately
20
dB
when
this
switch
is
activated.
When
the
incoming
receive
signal
is
very
strong
{20
dB
over
S-9),
the
signal
should
be
attenuated
to
Prevent
distortion
of
the
signal,
thereby
stabilizing
the
receiver
performance.
This
is
easily
done
by
ac-
tivating
the
ATT
switch.
This
control
is
also
useful
when
a
strong
signal
is
near
your
desired
signal,
while
some
loss
will
occur
to
the
desired
signal
as
well
as
the
undesired
signal,
the
use
of
the
at-
tenuator
will
sometimes
allow
you
to
complete
the
aso.
12
ee
2
ALC/PWR
meter
switch
ALC meter
Used
to
monitor
the
drive
level
in
USB,
LSB,
and
AM
modes.
PWR meter
Used
to
indicate
the
output
power.
Note
that
this
meter
is
a
peak
reading
meter,
not
an
average
reading
meter.
28
PROC
(Processor)
switch
Effective
transmit
power
output
will
increase
when
the
PROC
switch
is
turned
ON
during
USB,
LSB,
or
AM
mode
operations.
(1
4-3-6.
Speach
Processor)
Note:
—
.
When
the
speech
processor
function
is
used
in
the
USB,
LSB,
or
AM
moae
it
is
possible
to
overdrive
the
transmitter:
An
easy
way
to
check
for
excessive
Modulation
is
to
monitor
the
ALC
meter.
If
the
needle
is
over
the
ALC
zone
you
are
overmodulating.
Reduce
the
MIC
gain
control
setting
until
the
needle
temains
in
the
ALC
zone
on
voice
peaks,
@ Standby switch
This
switch
is
used
when
yOu
want
to
manuaily
con-
trol
transmit
or
receive.
SEND:
Places
the
radio
into
transmit.
REC
:
Places
the
radio
into
receive.
80 MIC jack
Microphone connection.
GND {STBY]«
MIC:
GND (MIcy
STBY >
*NC
A
*
8Vapprox.
10
mA
DOWN»
ups
MIC
connector
(Front
view)
8) PHONES jack
Output
terminal
for
headphones.

A. Display Panel
H
sal usB won scan AVFO B shut I
mut OA G&A -a8
RIT
@ MODE display
@ M.CH display
@® SCAN display
@) VFO A/B display
(8) SPLIT display
© display
@ RIT display
(® RIT frequency
display
ad ae
: Indicates the selected made.
: Turns ON during a Memory
Channel operation.
: Turns ON during scanning.
: Turns ON when VFO A (ar
VFO 8) operates.
: Turns ON during split opera-
tian,
i Lights during selection or
operation on memory chan-
nels 20 to 30. (See Sections
4-4 and 4-5 for additional in-
formation on this indicator.)
: Turns ON when using RIT.
: Shows the amount of RIT
offset to the nearest 100 Hz.
Note:
Minus ‘'—"' appears in the
display when the RIT offset
is below the transmit fre-
quency.
4)
(9) Frequency display:
@® ¢ display
Memory Channel
number display
Indicates the operating fre-
quency. Frequency resolu-
tion is selectable between
10 and 100 Hz. Please refer
to Section 4-2-8 for addi-
tional information on the
selection process.
: The @ display indicates the
Memory Channel currently
display will be skipped dur-
ing Memory Channel scan.
(Please refer to Section
4-5-5.)
: Memory Channel Number is
displayed.

4-1-2. Rear Panet
oefay
erure)
letetels!
a a aa @
@® ANT (Antenna) connector _
This connector should be attached to a suitable
antenna for transmitting and receiving. The antenna
cable should be 5Q-ohm coax, terminated with a
PL-259 connector.
GND (Ground) terminal
To prevent electric shock, as well as RFI and BCI,
connect the transceiver to a good earth ground.
@& DC power connector
This is used to connect the OC power supply.
@ ACC 2 jack
Terminal
follows:
numbers and their
applications are as
View from the
rear panel
13-pin DIN plug (£07-1351-05)
14
eB @
No connection
Output level is fixed regardless of
the AF control setting
Output voltage
300 mV or more at maximum
receiving input with 4.7 kf load
GND. Grounding (The shielded wire of the
audio output terminal is connected
here.)
PSQ This pin is used for connecting a
TNC (Terminal Node Controller) for
use with packet radio. I is the
Squelch Control terminal and will not
allow packet communications while
squeich is off
No connection
No connection
Grounding
@lolsla This terminal disconnects the
microphone and places the
transceiver into transmit when a
ground is applied to this terminal.
No connection _.
This is the MIC (microphone) input
pin from the terminal unit. The input
level is approximately 10 mV.
GND Grounding (The shielded wire of the
audio input is connected here.)
Standby Standby terminal
Grounding transmits. PT

® ACC 1 jack
This jack is designed for connection of the 6-pin DIN
connector supplied with the optional interface unit.
© KEY jack
Using shielded line, connect a 1/4” phone plug to
this jack for CW operation. Open-terminal voltage is
approximately 5.5 VDC.
@® ACC 3 terminal
This terminal is used to access the automatic anten-
na tuner AT-250.
Caution:
The TUNER switch should be turned off if the
transceiver will be used on frequencies outside the
range of the AT-250.
REMOTE connector
Note:
When the control relay is used refer to section 6-6-8.
+12 VDC ON transmit GND}
max. 10 mA ALC input
From standby switch
{PTT circuit for foot switch) Speaker output
Internal wiring
View from cord
@ EXT. SP (External speaker) jack
This jack is for connection of an external speaker.
@® VOX GAIN control (TS-140S only}
This control adjusts the sensitivity of the VOX
amplifier. Adjust this control for your personal
preference.
VOX GAIN
@ ANTI VOX control (TS-140S only)
VOX operations are sometimes difficult with high
speaker volume control settings. The ANTI VOX
control is used to reduce the tendency of the VOX to
activate from inputs from the speaker. The ANTI
VOX control is not active when headphones are con-
nected, for obvious reasons!
ANTI
{% DELAY control
This control adjusts the ‘’hang-time’’ that the radio
will remain keyed after voice input has stopped.
DELAY
fe)
4-1-3. Microphone
@® @ UP/DWN (Up/Down) switches
These switches are used to step the VFO frequency
of memory channei up and down. The frequency will
change continuously if the switches are pressed and
held.
® PTT (Push To Talk) switch
The transceiver will be placed into Transmit
whenever this switch is pressed. Operations such as
scanning, code squelch operations, and channel
linkage will be cleared when this switch is pressed.
15

4-2.
RECEIVER
OPERATION
4-2-1. Beep Tones
Audible
confirmation
of
microprosessor
functions
is
provided
in
the
form
of
a
series
of
audio
beeps.
4-2-2.
Audible
Mode
Announcement
When
a
Mode
key
is
pressed,
the
first
character
of
the
mode
is
sounded
in
Morse
code
thru
the
Speaker
The
output
level
of
the
‘‘Beeper’’
is
adjustable
with
a
T
variable
resistor
located
inside
the
set.
(Please
refer
Mode
Morse
Code
to
Section
6-6-4)
USB
ne
LSB
_—
Beep
Tone
Indication
CW
{Wide}
—-
1
short
beep
|
When
the
following
keys
are
CWN
(Narrow)
_:
pressed:
i
AM
_
al
A/B,
SPLIT,
F.LOCK,
A=B,
Mr
V,
SCAN,
CLEAR,
M.IN
FM
‘oo.
(When
the
Memory
Scralt
made
is
selected.},
VFO/M,
BAND
Note:
N:
Hz,
RIT,
*
.
bee
iia
1
short
beep
can
be
selected
by
pressing
the
CW/N
’ ‘
—|
key
and
the
power
switch
ON.
[Please
refer
to
Sec-
1
long
beep
When
the
M.IN
key
is
pressed
tion
4-2-8)
again to enter the data.
3
short
beeps
|
A.
When
the
SCAN
key
is
pressed
and
the
receiver
is
unable
to
memory
scan.*?
B.
When
all
memory
channels
are
empty
and
attempt
ta
select
memory
channel
with
1
MHz
switch
ON.
*?
C.
When
all
memory
channels
are
full
and
attempt
to
find
out
an
empty
channel
with
1
MHz
[switch ON. *?
Notes: _
*1
:
1
short
beep
can
be
selected
by
pressing
the
CWIN
key
and
the
power
switch
ON.
(Please
refer
to
Section
4-2-8)
*2
:
3
short
beeps
can
be
selected
by
pressing
the
F.LOCK
key
and
the
power
switch
ON.
(Please
refer
to
Section
4-2-8)
16

4-2-3. Receiving
POWER switch : OFF (=)
RIT control : Center
iF SHIFT control : Center
SQL control :
Fully counterclockwise
Cc, Ee : gs GAGBBBA -a8 ap |
oe. ERENNGOD Ee ee 5"
I (©) Mowyrocn ss
Me
AF gain control :
Fully counterclockwise
OFF (m@! | OFF( a!
REC (a) stow, a)
Note:
All segments on the Display Panel and Indicators are
shown on for this explanation.
1. Preset the contrals as shown in the accompanying
illustration.
2. Turn on the DC power supply (Fixed station) and
then turn the transceiver’s power switch ON. The
display panel will indicate as shown below.
use AVFO
runnAnn
ee
Note: — .-
if the display is not as shown reset the
microprocessor using the procedure in Section
4-4-2,
3. Select the desired mode using one of the MODE
keys.
4. Adjust the AF gain control for the desired volume.
5. Press the UP/DOWN switches to select the
desired frequency band.
6. Slowly rotate the TUNING knob until the desired
signal can be heard clearly.
4-2-4. Dual Digital VFO’s
Operational convenience can be enhanced thru the
use of both VFO A and VFO B.
Two VFO's are provided to allow you to change fre-
quencies rapidly. You could set one VFO to the lower
tuning range and the other VFO to the upper tuning
limit. You can set either VFO to any frequency you
desire.
(ajJA=B key
Depressing this key causes the data contained in
the inactive VFO (the VFO that is not currently be-
ing displayed) to change to the same data contain-
ed in the active VFO (the one currently displayed).
Both the frequency, mode and antenna selection
are changed.
Pome RF GAIN
.
=i
control
:
MAX
mem) wm ee eo
NB LEVEL
control : Center
\
OFF(m)
For example:
VFO A is set at 7 MHz in LSB, and VFO B is
21 MHz in USB. VFO A is the active VFO (show
on the display}. Depressing the A=8 key will
cause VFO B to change to 7 MHz in LSB.
(b)A/B key
Allows selection of the desired active VFO. Each
time this key is depressed the active VFO will
alternate between VFO A and VFO B.
(c)SPLIT key
Allows the use of one VFO for transmit, and the
other for receive (Split Frequency operation).
For example:
VFO A is the active VFO, and VFO B is the inactive
VFO, Depressing the SPLIT key will cause the TS-
1405/6808 to receive on VFO A and transmit on
VFO B. The mode of reception and transmission
will follow the mode contained in the appropriate
VFO memory. It is possible to work cross band,
cross mode if desired.
To avoid confusion during contest, or pile-up
operations we recommend using VFO A for
receive and VFO B for trasmit.
4-2-5. Frequency Step
1. The frequency step is set automatically depending
on the mode that has been selected.
Frequency Step
.. Mode | USB/LSB/
| me CWICWN AM/FM
| Frequency step 10 Hz 100 Hz
One revolution
| of TUNING knob | 10 kHz 50 kHz
17

2.When
a
10 Hz
or
100
Hz
frequency
step
is
selected
rapid
tuning
is
possible
by
rotaing
the
TUNING
knob
quickly.
When
the
TUNING
knob
is
rotated
at
about
3
revolutions
a
second
a
geometric
increase
in
the
tuning
step
occurs,
that
corresponds
to
the
speed
of
dial
rotation.
4-2-6. SSB AUTO mode shift
This
transceiver
automatically
selects
the
ap-
propriate
sideband
when
in
the
SSB
mode.
S00
kHz
7
9.5
MHz
54
MHz
iSB
usB
|
Notes: — -
1.
USB
is
selected
from
at
9.5
MHz
and above.
2.
The
AUTO
mode
selection
witl
not
function
when
using
RIT.
4-2-7. CW zero-beat Operation
1,
When
an
optional
filter
is
not
used,
tune
the
TUN-
ING
knob
so
that
the
receive
beat
frequency
is
ap-
proximately
800
Hz.
2.When
an
optional
CW
filter
is
installed
the
simplest
method
to
use
is
to
adjust
the
TUNING
knob
for
maximum
S-meter
deflection.
800 Hz
SSB fitter passband
CW filter
Passband
H
'
4
n
'
‘
1
‘
i
'
1
,
1
i
U
,
¢
Frequency—=
BFO. Displayed frequency
4-2-8. Power on function selection
Several
of
the
functions
of
this
transceiver
can
be
changed
at
the
time
the
trasceiver
is
turned
ON.
Repeat when releasing each function.
I
Switch
or
key
These
functions
include
|
__
CLEAR
10
Hz
Main
display
resolution:
ON/OFF
4
r
RIT RIT
step
frequency
selection:
10
Hz/20
Hz
[-
AM/FM
AM
step
frequency
selection
for
the
522
kHz
to
1620
kHz
band:
9
kHz/10
kHz
SCAN
Program
scan
hold:
ON/OFF
:
-
[
CWIN
Audible
mode
announcement:
Beep
tones/Morse
code
F.LOCK
Audible
alarm:
Beep
tones/Morse
code
|
1
MHz
BAND
switch
(1
MHz
switch
is
ON};
500
kHz/1
MHz
:
4-2-9. Alarm Function
Several
alarms
have
been
included
to
signal
errors
that
you
might
encounter,
The
chart
below
lists
the
possible
causes and the resulting Morse code alarm.
Morse
code
will
be
heard
from
the
speaker.
Indication
Morse Code
When the microprocessor is reset.
(RESET)
When the system is unlocked.
{UNLOCK}
When
the
SCAN
key
is
pressed
and
the
receiver
is
unable
to
memory
scan.
*
{CHECK MEMORY)
When
all
memory
channels
are
empty
and
attempt
to
select
memory
channel
with
1
MHz
switch
ON.
*
{EMPTY}
When
all
memory
channels
are
full
and
attempt
to
find
out
an
empty
channel
with
1
MHz
switch
ON.
*
(FULL)
Note:
*
:
3
short
beeps
can
be
selected
by
pressing
the
F.LOCK
key
and
the
power
switch
ON.
(Please
refer
to
Section
4-2-8.}
18

4-3. TRANSMITTER OPERATION
Preset the controls as shown in the accompanying il-
OFF
PWR control: MIN
lustration.
(i
eer
scr
er
]
POWER:
a
|
93.
BB
RBBBR
-a8:
switch: awaor :
OFF
(m)
PHONES
=
Microphone
MIC gain control: MIN
RF GAIN control: MAX
OFF m)
Note:
REC(m@) = ALC( a}
All
segments
on
the
Display
Panel
and
indicators
are
shown
an
for
this
explanation,
4-3-1. Precaution
Before
transmitting
check
the
frequency
for
activity
so that you do not interrupt another QSO.
4-3-2. SSB (LSB. USB) Mode
1. Place the POWER switch ON.
2.Set
the
MODE
keys
to
USB
or
LSB.
By
interna-
tional
convention
frequencies
below
10
MHz
utilize
the
LSB
(Lower
Sideband)
mode,
and
fre-
quencies
above
10
MHz
use
USB
(Upper
Side-
band).
The
actual
switchover
point
on
the
TS-
140S/680S
is
9.5
MHz.
The
TS-140S/680S
will
select
the
proper
mode
when
you
tune
to
the
desired
frequency.
You
can
override
this
by
simp-
ly
pressing
the
desired
made
key.
3. Press the microphone PTT switch, or set the
standby switch to SEND. The ON AIR indicator
will light.
4. Set the PWR control to the desired level.
5. Speak into the microphone and adjust the MIC
gain
control
so
that
the
meter
deflection
does
not
exceed the ALC zone on voice peaks.
Note:
Adjustment using the ALC meter provides greater
accuracy than if you try and use the power meter for
adjustment. Never adjust for ALC deflection above
the ALC zone, as this will cause distortion of the
transmitted audio signal.
ALC zone
Notes:
1. Do not exceed the ALC zone on voice peaks.
2.When using high gain microphones or pre-
amplified microphones you might have difficulty
in obtaining proper ALC meter readings, or you
might receive reports of audio distonion. To pre-
vent this type of problem you should set the front
panel MIC gain control to center and reduce the
gain
of
the
internal
microphone
gain
contro},
by
rotating the control clockwise, until the proper
ALC reading is obtained. The adjustment of this
__ control is described in Section 6-6-6,
6. Turn on the PROC switch if required. (Please refer
to Section 4-3-6)
7. Release the PTT switch, or place the standby
switch to REC. The ON AiR indicator will turn
OFF.
4-3-3. FM Mode
1. Place the POWER switch ON.
2.
Select
the
desired
frequency
within
the
28
MHz/
50
MHz
amateur
radio
band.
(50
MHz
:
TS-680S
only)
Place
the
MODE
key
to
FM.
3.
Press
the
microphone
PTT
switch
or
place
the
standby
switch
to
SEND.
The
ON
AIR
indicator
will
light.
4.
Set
the
PWR
control
to
the
desired
level.
5.
Speak
into
the
microphone,
holding
the
microphone
about
5
cm
away
from
your
mouth.
Close
talking
or
talking
too
loudly
may
reduce
transmission
clarity
or
spread
the
side
bands
too
much.
6.
Release
the
PTT
switch,
or
place
the
standby
switch
to
REC.
The
ON
AIR
indicator
will
turn
OFF.
19

4-3-4. AM Mode
1. Place the POWER switch ON.
2. Set the ALC/PWR meter switch to PWR.
3. Set the MODE key to AM.
4, Press the microphone PTT switch or place the
standby switch to SEND. The ON AIR indicator
will light.
5. Adjust the PWR control so that the meter in-
dicates 40 watts. [50 MHz : 4 watts (TS-680S
only)]
50 MHz BAND = 1,8~28 MHz BAND.
6. Speak into the microphone and adjust the MIC
gain control so that the meter indicates 80 watts.
(50 MHz : 8 watts (TS-6805 only}!
60 MHz BAND 1.8 - 2 MHz BAND
7. Turn on the PROC switch if required. (Please refer
to Section 4-3-6)
8. Release the PTT switch, or place the standby
switch to REC. The ON AIR indicator will turn
OFF.
4-3-5. CW Mode
Sidetone oscillator
The transceiver contains a sidetone oscillator circuit
to permit you to monitor your own signat. If the key
is closed in a mode other than CW, transmit will not
be selected but a sidetone will comes out of the
speaker, to allow Morse code training. The volume
of the sidetone can be adjusted internally. (Please
refer to Section 6-6-3)
Place the POWER switch ON. Set MODE keys to CW.
Placing the standby switch to SEND and depressing
the CW key will cause the radio to transmit.
Transmission is also possible when in the SEMI or
FULL break-in mode by simply depressing the key,
with the standby switch in the REC position.
Adjust the PWR controt until the meter deflection is
within the ALC zone.
ALC zone
20
¢ SEMI and FULL break-in
Two break-in methods are provided with the TS-
140S/680S transceivers, SEMI and FULL break-in.
With either break-in operation depressing the CW
key will cause the radio to transmit without the need
for manually switching the SEND/REC switch. The
difference between FULL and SEMI break-in is that
during FULL break-in operation it is possible to listen
between dots and dashes, and that during SEMI
break-in it is not.
Note:
With either SEMI or FULL break-in operation, cross
band/cross mode operation is not possible. Addi-
tionally, when you are using FULL break-in operation
you should not work cross band splits, only in the
same band.
The TS-140S/680S also provides a_ side-tone
oscillator circuit to allow monitoring of your CW
signal during transmission.
{a)Semi-automatic break-in
Depressing the CW key will automatically place
the transceiver into the transmit mode. Transmit
mode will be maintained for a period determined
by the setting of the DELAY control on the rear
panel of the transceiver, even after the CW key is
released.
OFF SEMI_FULL
OFF SEMLEDLC
(b)Full-automatic break-in
Depressing the CW key will automatically place
the transceiver into the transmit mode. Releasing
the CW key will return the radio to receive im-
mediately enabling reception between characters.
Caution: -
The TL-922A4/922 linear amplifier is not designed
for full break-in type operation, Attempting to use
this accessory in the FULL break-in mode cause
damage to occur to the linear amplifier.
cw
OFF SEMI_FULL
Se
On occasion an electronic keyer may be used that
has no method of producing a_ continuous
transmit condition. In order to obtain a continuous
carrier for tuning simply place the standby switch
to the SEND position, and the CW switch to
FULL.
4-3-6. Speech Processor
The Speech Processor is used when signals from
your station are weak at the distant station.
Notes:
1, Intelligibility is normally reduced when the speech
processor is used.