Kenwood TS-120S User manual

OPERATING MANUAL

INTRODUCTION
You
are
the
owner
of
our
latest
product.
the
new
TS-120S(V)
transceiver.
Please
read
this
in-
struction
manual
carefully
before
placing
your
transceiver
in
service.
The
unit
has
been
carefully
engineered
and
manufactured
to
rigid
quality
standards,
and
should
give
you
satisfactory
and
dependable
operation
for
many
years.
AFTER UNPACKING:
© Shipping container:
‘Save
the
boxes
and
packing
in
the
event
your
unit
needs
to
be
transported
for
remote
operation, maintenance. or service.
©
The
following
explicit
definitions
apply
in
this
manual:
Note:
If
disregarded
inconvenience
only,
no
risk
of
equipment
damage
or
personal
injury.
Caution:
—
Equipment
damage
may
occur,
but
not
personal
injury.
CONTENTS
SPECIFICATIONS.
3
SECTION
1.
FEATURES.
4
SECTION
2.
PREPERATION
FOR
USE.
4
2.1
ACCESSORIES:
4
2.2
INSTALLATION
4
2.3
INTERCONNECTION
5
2.4
ANTENNA
AND
POWER
SUPPLY.
6
SECTION
3.
CONTROLS
7
3.1
FRONT
PANEL.
7
3.2
REAR
TOP
PANEL
9
SECTION
4.
OPERATION.
10
4.1
RECEPTION
10
4.2
TRANSMISSION
"
4.3
VOX
OPERATION
12
4.4
SEMI-BREAK-IN
OPERATION
13
4.5
FIXED
CHANNEL
OPERATION
13
4.6
CW
OPERATION
14
4.7
MOBILE
OPERATION
14
4.8
FIXED
STATION
OPERATION
7
4.9
DIGITAL
DISPLAY
CALIBRATION
7
4.10
ANALOG
DIAL
CALIBRATION
7
SECTION
5.
ADDITIONAL
INFORMATION
18
SECTION
6.
OPTIONAL
ACCESSORIES.
19
SECTION
7.
CIRCUIT
DESCRIPTION.
2
BLOCK
DIAGRAM
22
SECTION
8.
TROUBLESHOOTING
23
SCHEMATIC
DIAGRAM.
29.
31
INTERNAL
VIEWS
.
30,
32

TS- 1208, TSs- 120V SPECIFICATIONS
relates (a0 dent
sorta 700 TO
ti ae
| TS-120S TS-120V
ues
T
TS-1208
TS-120V
7
80~ 15m band | 200W PEP for SSE operation
16OW DC for CW operation
160W PEP for SSB operation
| 140W 0¢ tor CW opera
| 2ew PEP tox S88 operation
20W DC for CW operation
25W PEP for SSB operation
20W DC for CW operation
10m band
ALC INPUT
Audio Input Impedance
Audio Output Impedance ~ 162
Audio
Output
More
than
1.5
watts
(with
less
than
10%
distortion)
into
an
8-ohm
load
RF Output Impedance 502
Frequency
Stability
Within
100
Hz
during
any
30
minute
period
a
Within +1 kHz during the first hou:
Carrier Suppression c
Sideband
Suppression
Unwanted
sideband
is
better
than
50 dB
down
from
the
output
signal.
Spurious
Radiation
Bettor
than
40
dB
down
from
output
signal
Harmonic
Radiation
Better
than
40 d8
down
from
output
signal
Image
frequency
better
than
50 dB
down
from
the
output
signal
IF
frequency
is
70.48
or
more
down
from
output
signal
0.25
nV
at
1048
S+N/N
or
better
— 10V DC max (from linear}
5002 ~ 50 Ki
warmup.
fter 1 minute of warmup
better than 40 dB down from the output signal
Receiver
Selectivity
ssB
2.4
kHz
(—6
dB)
4.2
kHz
(—60
dB)
“cw
0
SkHe
|
~6
48)
1.5 kHz (~60 4B)
* Optional CW filter installed
Semiconductors
Dimensions:
TS-1208
TS-120V
Weight
|
_1s-120s
[___ts-120v
Ic
|
26 26
Fer
|
16
16
Transistor
|
30
84
Diode
|
142
137
241W x 94H x 2930 mm
(9-1/2W x 3.3/4H x 11.9/16D inch)
241W « 94H x 235D mm
(9-1/2W x 3-3/4H « 9-1/4D inch}
TS-1208:
56
kg
(12.3
Ibs)
TS-120V:
4.9k9
(10.8
Ibs)

1. SINGLE-CONVERSION SYSTEM USING ALL
CIRCUITRY
The single-conversion system, with a unique Phase Locked
Loop circuit, FET balanced mixers and MOS FET's, assures
excellent spurious and intermod characteristic
2. BUILT-IN DIGITAL DISPLAY
The digital display affords easy reading of operating frequen-
cy to an accuracy of 100 Hz on any band and any mode
3. BUILT-IN IF SHIFT CIRCUIT (Passband Tuning)
‘An IF SHIFT systom is built into the transceiver to allow shi
ting of the IF passband, thereby eliminating adjacent
channel interference.
4, 3.5 ~ 29.7 MHZ AND WWV BANDS.
‘The transceiver is designed to operate on LSB/USB/CW in
the 3.5 ~ 29.7 MHz bands, WWV (14.5 ~ 15 MHz) is also
built into the transceiver to permit accurate frequency
calibration.
5. COMPACT. LIGHTWEIGHT DESIGN
‘The TS-120S(V) has many advanced features. yet it is com:
pact and lightweight, suitable for mobile and field operations.
{as wall as fixed-station operation,
6. EASY OPERATION
All controls and switches are carefully arranged for easy of
operation,
ensuring
convenience
and
versitilty
2.1 ACCESSORIES
The following accessories are furnished with the TS:
12081V)
Instruction manual
External speaker plug
7P DIN remote plug
DC power cord
Fuse. 20A (TS-120S)
4A (TS-120V)
SECTION 1.
FEATURES
7. ALL SOLID-STATE DESIGN
The
all
solid-state,
compact
unit
features
2
wide-band
final
Stage.
eliminating
the
need
for
peaking
controls.
8. FOUR FIXED CHANNELS
Four
FIXED
channels
can
be
installed,
one
for
each
of
7.
14,
21
and
28
MHz
bands.
The
3.5
MHz
and
28
MHz
FIXED.
XTAL position can be exchanged by simply moving a con-
Rector on the AF-GEN unit.
9.
FULL
RANGE
OF
AUXILIARY
FUNCTIONS
The
TS-120S(V)
is
equipped
with
VOX.
balanced
gate
system
noise
blanker
and
a
25-kHz
marker.
10.
OPTIONAL
CW
FILTER
YK-88C.
The
TS-120S(V)
permits
use
of
the
optional
YK-88C
CW
filter.
CW
semi-break-in
operation
is
provided
using
the
built-in
VOX
and
CW
side-tone
circuits
11.
WIDE
VARIETY
OF
OPTIONAL
ACCESSORIES
The
following
optional
accessories
are
available;
Regulated
Power
Supply
(PS-30.
PS-20),
Mobile
Mount
(MB-100),
CW
Filter
(YK-B8C),
External
VFO
(VFO-120)
External
Speaker
(SP-120)
SECTION 2. PREPERATION FOR USE 1
2.2 INSTALLATION
It is
preferable
to
choose
an
operating
location
that
is
dry
and
cool.
and
to
avoid
operating
the
transceiver
in
direct
sunlight
Allow adequate ventilation, particularly during mobile opera
tion

2.3 INTERCONNECTION
Connect the transceiver as illustrated in Fig. 2-1
Microphone
Either 2 Tow of high im
odance. microphone (5008
0.50 ka) can be used. The
PTT. swrtzh. should be in
folate from the mic sxcuth
(snown ina") Use
microphone with 9 separate
Siteh and MIC ne so both
PTT. and VOX are avaiable
moore
DEBE
Meroe E
Headphones
‘resin Use nescohones of 4 10 16it
\mpedanee. The optional HS
‘headphone s beat site for
use wit the T5-12081V)
Stereo-tyoe. hesdphones can
‘also be usec
For CW operation. connect
your key to the KEY jock at
the
rear
Use
shielsed
cable
Extornal
spe
wi
sea. Conmect
Extornal VEO
For connection
‘rnal
VEO"120
“GND terminal
Ieisrecommended that an ground
lead be connected t0 the GNO
inal atthe rea" Of the set 10
prevent the possibility of electric
hock TVI and BC
sea
}OTE connector
al accessones can be con
nected to the T5-1208(V)
{twough the REMOTE con
Besices the builtin
speaker as external
Speaker
can
lao.
be
rear EXY SP jack using
plug.
Note: VFO:520 and
VFO:820 cannot ‘be
10 the
"a'l. Use a microphone with
8 separate: switch and MIC
line $0 both PIT. and VOX:
ate avaiable.
GND terminal
leis
recommended
that
an
ground
Bie
Microphone
Either
a
low
oF
high
imped-
Is-10v
rsenones
of
410
160
{ance
microphone
1500210
HS.
Ott can be used. The PTT best sited for
switch
should
be
insolated
TS-1208(v
fromm
the
mie
cxcut
(shown
ip
Stereo-type
headphones
can
algo be used.
Fer CW operatan, connect
Your key So toe REY Sach ot
erat’ Uae Seted cate
mit
=
the supped plug.
REMOTE connector
tend
'be
comected
to
he
GND
Extemat
VEO
termina
tte
vet
of
he
sate
far
connection
of
dt
Drover
the
possi
of
seco
fa
ve0.
190
Sock”
a
Pana
se
frm
Note.
UF0:820
ane
Short
and
neary
a
lad
2
bose
120820
canoe
“be
re
aya
lead
3
Poss:
Fig.
2-1
Interconnection
of
TS-120V
pa
»
speaker 98 external
io be
hed. Connect 10 the
‘ear EXT SP jack using
External accessores can be conn
ected fo the TS.120SIv) through
the REMOTE connector. The PTT
{erminal and be usod for remote
control of sand/recewve operation

2.4
ANTENNA
AND
POWER
SUPPLY
Connect
the
antenna
and
power
supply
as
shown
in
Fig.
2-2
for
fixed-station
or
mobile
operation
stallion. see Page 17
Lightning
TS-1208
af ——
Grey Biack
$=
0
power
torminat
on.
see
Pag
For fined station antenn ins
lation. see Page 17
rents
Min
TI
Pe
HN
|
LPO:
= mb)”
Note. Use esher
tatery of regula.
3 supoy. but not
ruchons.
see
Page
5
2
sewtsr)
Fig.
2-2
Antenna
and
Power
Supply
Connection
of
TS-
120V

16 ANTI VOX CONTROL.
39 DELAY CONTROL
VOX GAIN CONTROL
fsusoiaL,
@oeren
D OIGITAL DISPLAY.
@ stanosy
* switcH
3 MODE SWITCH
‘9 Mic CONNECTOR
@ PHONES JACK.
D vox switcn
@®meren
swre
———___]
Fix
switcH
———_—____]
{1
MAIN
TUNING
KNOB:
SECTION 3. CONTROLS ~
TANT wnoicator
SCARIER
Levet
cONTAOL
MIC CONTROL
DAF
GAIN
CONTROL
IDRF GAIN CONTROL
BAND switcH
1) SHIFT CONTROL
a PowER switcn
2) NOISE BLANKER swiTcH
# CALIBRATOR SWITCH
—— #p nit swircx
—
WRIT
CONTROL
Fig. 3-1 Front Panel
3.1. FRONT PANEL
D METER
The
meter
has
three
functions,
two
being
selected
by
the
METER
switch.
In
receive
the
meter
is
automatically
an
S-
‘meter
showing
receive
signal
strength
on
a
scale
of
1
~
9.9.
+
20,
+
40
and
+
60
dB.
In
transmit,
the
meter
shows
IC
(TS-1208),
RF
output
(TS-120V)
or
ALC
level
depending
‘on
METER
switch
position
2 DIGITAL DISPLAY
The
digital
display
indicates
true
operating
frequency
to
an
accuracy
of
100
Hz.
3 MODE switch
The
mode
switch
selects
type
of
operation.
\sB
Used
for
lower-sideband
operation.
(LSB
is
‘most
common
in
the 3.5
and
7
MHz
bands.)
use
Used
for
upper-sideband
operation.
(USB
is
‘most
common
in
14,21
and
28
MHz
bands.)
cw
Used
for
CW
operation
® STANDBY SWITCH
This
switch
selects
receive
or
transmit
function,
In
the
REC
position,
the
transceiver
is
normally
in
the
receive
‘mode
unless
the
microphone
PTT
switch
is
depressed,
in
the
SEND
position,
the
TS-120S{V)
is
switched
to
the
transmit.
mode.
CAUTION:
Do
not
transmit
without
an
antenna
or
dummy
load.
Equipment
damage
will
occur.
Such
damage
is
not
covered
by
warranty.
5 MIC CONNECTOR
Connect
your
microphone
(MC-30S,
MC-35S,
MC-50,
ete.)
relerring
to
Fig.
2-1.
The
TS:120S(V)
accepts
both
low
and
high
impedance
microphones.
© PHONES JACK
The
headphone
jack
allows
use
of
4-to-16-ohm
headphones.
HS-4
optional
headphones
provide
optimum
results.
Stereo-type
headphones
can
also
be
used.
This
will
Gisable
the
internal
and
external
speaker.

7
VOX
(VOICE
OPERATED
TRANSMIT)
SWITCH
This
function
is
used
for
SSB
VOX
or
CW
semi-break-in
Peration.
In
the
MAN
(manual)
position.
the
transceiver
is
keyed
by
either
the
standby
switch
or
the
microphone
PTT
switch
for
VOX
operation,
the
standy
switch
remains
in
RED. (See
page
12)
8 METER SWITCH
During
transmission,
the
meter
switch
determines
meter
funétion,
The
switch
selects
between:
ALC
The
meter
monitors
the
output
of
the
final
Stage
power
amplifier
during
transmis.
sion,
During
SSB
operation,
adjust
the
MIC
control
so
that
the
meter
pointer
is
within
the
ALC
zone.
Similarly,
adjust
the
CAR
control
for
CW
operation.
IC
(TS-1208)...
The
meter
monitors
final
stage
collector
current,
RF
(TS-120V)...
In
this
position
the
meter
monitors
the
felative
RF
output
of
the transceiver
9.
FIX
(fixed
channel)
SWITCH
The
TS-120SIV)
has
a
built-in
fixed
channel
oscillator
(crystals
are
user-provided.
optional)
which
is
activated
by
the FIX
switch
for
fixed
channel
or
VEO
operation,
1)
SUBDIAL
The
subdial
is
calibrated
from
0
to
500.
It
is
driven
from
the
main
tuning
knob
to
indicate
the
tansceiver's
operating
frequency.
1)
MAIN
TUNING
KNOB
This
control
is
used
to
select
the
desired
operating
frequen-
cy.
The
scale
on
the
control
knob
is
calibrated
at
1
kHz
in-
tervals,
allowing
accurate
tuning.
For
exact
frequency,
reac
the
Digital
Display,
i?
RIT
INDICATOR
This
light
emitting
diode
indicates
the
RIT
circuit
is
ON.
i)
IF
SHIFT
CONTROL,
By
using
this
control.
the
IF
crystal
filter
center
frequency
can
be
shifted
+1
kHz.
allowing
adjustment
of
tone
quality,
oF
eliminating
interference
from
adjacent
frequencies
For
normal
operation.
this
control
should
be
set
to
the
center
(0"
position
(detent)
@
RIT
CONTROL
When
the RIT
circuit
is
ON,
this
will
vary
receive
frequency
by
about
41.5
kHz.
When
the
control
is
set
to
the
“0
enter
position.
there
is
no
frequency
shift.
1
CAR
(CARRIER
LEVEL)
CONTROL
This
control
is
used
to
adjust
the
carrier
output
level
only
during
CW
operation.
Adjust
the
control
so
the
ALC
meter
indication
is
within
the
ALC
zone
8
'*
MIC
(MICROPHONE
GAIN)
CONTROL
This
adjusts
mic
empli'=-
gain
during
SSB
operation,
Again
adjust
the
control
so
ths
ALC
meter
indication
is
within
the
ALC
zone,
»)
AF
GAIN
(AUDIO
GAIN)
CONTROL
This
control
adjusts
the
receiving
audio
amplifier
gain
Volume
of
the
receives
signal
increases
as
the
control
is
turned
clockwise,
&
RF
GAIN
CONTROL
This
adjusts
the
receiver
section's
RF
amplifier
gain.
Turn
the
knob
fully
clockwise
for
maximum
gain,
Turn
counterclockwise
to
reduce
the
gain
'§
BAND
SWITCH
The
9-position
switch
selects
all
the
amateur
bands
from
3.5
to
29.7
MHz
and
WWV.
Set
the
switch
to
the
desired
band,
%
POWER
SWITCH
This
switch
the
TS.120S(V)
ON
and
OFF
2)
NB
(NOISE
BLANKER)
SWITCH
This
switch
is
used
to
reduce
pulsating
ignition
noises
of
the
type
usually
emitted
from
motor
vehicles,
#
CAL
(CALIBRATOR)
SWITCH
This
switch
energizes
the
built-in
25
kHz
marker
circuit.
The
calibrator
turns
ON
at
the
in
position,
BRIT
SWITCH
This
push
switch
turns
the
RIT
(Receiver
Incremental
Tun-
ing)
circuit
ON
and
OFF.
With
the
switch
depressed,
the
cir-
Cuit
is
activated
and
the
RIT
indicator
is
illuminated,
allowing
the
receive
frequency
to
be
shifted
by
about
+1.5
kHz
in-
dependent
of
the
transmit
frequency
by
using
the
RIT
con-
fol.
The
RIT
circuit
is
turned
OFF
when
the
switch
is
out
®
VOX
GAIN
CONTROL
This
control
adjusts
VOX
circuit
sensitivity
for
both
SSB
and
CW
operation
®
DELAY
CONTROL
This
control
is
used
to
adjust
the
“Hold”
time
of
the
VOX
cir-
Suit,
Clockwise
adjustment
gives
longer
hold:
2%
ANTI-VOx
CONTROL
‘This
control
is
used
to
adjust
the
VOX
system
so
that
itis
not
tripped
by
sound
from
the
speaker.

ANT
CoNNectoR.
7
@)GND TERMINAL —
3 cw KEY Jack -
COOLING
FAN
6)EXT
VFO
CONNECTOR
4)
SPEAKER
JACK
8
REFERENCE FREQUENCY
ADJUSTMENT ACCESS
'S) REMOTE CONNECTOR
OC
POWER
CONNECTOR
3.2 REAR PANEL
D
ANT
(ANTENNA)
CONNECTOR
This
UHF
connector
should
be
attached
to
@
suitable
anten.
1a
for
transmitting
and
receiving.
The
antenna
cable
should
be
of
a
50-ohm
unbalanced
type.
terminated
in
a
PL:259
plug.
2) GND (GROUND) TERMINAL
The
TS-120S(V)
should
be
grounded
through
this
terminal
to
avoid
the
possibility
of
TVI
and
BCI.
Use
9s
short.
and
heavy
a
lead
as
possible.
@ cw key Jack
For
CW
operation.
connect
your
key
to
this
terminal
using
a
two
conductor
phone
plug
and
shielded
cable
@
SPEAKER
(EXTERNAL
SPEAKER)
JACK
An
external
speaker
of
4
~
16
ohms
impedance
(such
as
the
SP-120)
can
be
connected
here.
This
will
disable
the
in-
ternal
speaker.
5)
REMOTE
CONNECTOR
This
is
used
1g
8
linear
amplifier
or
other
equipment.
For
connection.
refer
to
the
illustration
below.
fig.
3-3.
Always
use
shielded
line
for
all
functions,
7508
To ALC ercuit
Unswotened AF OUT
an From standby switch
rT Cacut
18-1208
INTERNAL
WIRING
Function Pins
ALC
+6,
6ND
(—
10V
DC
max)
Relay
control 2nd 5 or 4
125V
DC
*
Bridge
2
to
GND
if
required
1Amax
EXT PTT 3.GND
®
EXT
VFO
(EXTERNAL
VFO)
CONNECTOR
This
is
for
connection
of
an
external
VFO-120.
(Note:
the
VFO-520
and
VFO-820
cannot
be
used,
since
their
‘operating
frequency
is
incorrect)
D
DC
POWER
CONNECTOR
This
is
used
to
connect
the
DC
power
supply.
@
REFERENCE
FREQUENCY
ADJUSTMENT
For
PLL
reference
oscillator
adjustment.
Use
WWV
signal
for
calibration.
3) COOLING FAN
The
cooling
fan
operates
when
the
heat-sink
temperature

nea
SECTION 4. OPERATION
Sextings for reception
AE Tum fly
Tore fay
‘Settings for transmission
TAR ond |
SS ona]
Fig. 4-1 Control and Switch Settings
4,1 RECEPTION
First connect the antenna, microphone and key. Then, set
the controls and switches referring to Fig. 4-1. For SSB
operation the MODE switch should be set to comply with
common operating practice: that is. it should be set to LSE
for the 3.5 and 7 MHz bands and to USB for the bands
above 14 MHz
Ascertain that the TS-120S(V) is ready for operation, then
turn, the POWER switch ON. The meter, dial scale and
digital display will lluminate. indicating the transceiver isin
operation. The transceiver is fully solid-state, allowing
reception as soon as the POWER switch is turned ON.
‘Advance the AF GAIN contro! clockwise until some receiver
noise is heard from the speaker. Turn the main tuning knob
so the desired signal can be heard clearly
While turning the main tuning knob. the frequency (MHz
digits) reading on the digital display wil change at the edge
of
each band
(for
example,
from
(28.999.9}
ro
{23.000.0)
MHz). When tuning above or below a band edge. the 1 MHz
and 10 MHz digits are blanked. as shown below.
EN RAO REE IN TN ELE
1 i i i v v
4.1.2. NB SWITCH
The TS-120S{V) has a sophisticated noise blanker designed
to reduce ignition-type pulse noise. The noise blanker is pi
ticularly important for mobile operation. When necessary,
activate the noise-blanker by depressing the NB switch ON.
4.1.3. RF GAIN CONTROL (Fig. 4-2)
For normal operation, this control should be turned fully
clockwise for maximum sensitivity. Receive sensitivity is
reduced by turning the control counterclockwise.
Adjust the RF GAIN so the S-meter does not show ex-
cessive deflection. This minimizes noise during reception
and allows the S-meter to indicates signal peak (or a little
below that point), noise is markedly reduced when the signal
is absent
‘Simeter peak pownt
AF GAIN -@> RF GAIN
)
(Coc 593955 139539950000)
4.1.1, WWV RECEPTION
To receive WWV at 15 MHz, set the BAND switch to
JJY/WWV and turn the main tuning knob until the subdial
reads "500". The digital display indicates "000.0" instead
of 15.0000.
10
Sma eg Pa
a: ful counter
thes love ate > clockwise poston
rates STR CAIN CoO say oe can
po Pie,
ys
Fig. 4-2 RF GAIN Control Operation