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

4.1.4, RIT CONTROL
By using the RIT (Receiver Incremental Tuning) control. the
receive frequency can be shifted by about + 1.5 kHz without
changing the transmit frequency,
If the frequency of the station you are working changes, your
receive frequency can be reset by turning the RIT switch ON.
‘and adjusting the RIT control. Adjusting the contro!
clockwise increases the frequency. The RIT shift can be
checked by the digital display. When first calling another
station, the RIT should be OFF. otherwise your transmit and
receive frequency will coincide,
4.1.5, IF SHIFT CONTROL
The IF SHIFT control is used to shift the passband of the IF
filter without changing receive frequency. By turning this
control in either direction, the IF passband is shifted as
shown in Fig, 4-3.
The IF SHIFT is effective in eliminating interference when
the receive signal is superinposed on nearby signals during
‘operation in USB, LSB or CW mode.
Tumad in @ aection Tuned in ® drocton
IF Wit passbana
/ signa
7—\ °
Inverering signal
at -See swe
©
@.
Turn in © direction
ferance trom signal @
ference from signal
Fig. 4-3 IF SHIFT CONTROL
(1) USB Mode
Adjust
the
IF
SHIFT
control
in
the
©
direction
and
lower
frequencies
are
cut.
Adjust
the
control
in
the
©
direction
‘and high frequencies are cut.
(2) LSB Mode
Adjust
the
control
in
the
@
direction
and
higher
frequencies
are
cut.
Adjust
the
control
in
the
©
direction
and low
fre-
quencies
are
cut.
(3) CW Mode
By
using
the
IF
SHIFT
in
conjunction
with
the
RIT.
tone
quality can be adjusted
4.2
TRANSMISSION
(Fig.
4-4)
CAUTION: ——$_________
Before
transmitting,
be
sure
to
connect
an
antenna
or
dum:
my
load
with
a
VSWR
of
less
than
1.5:1.
Never
attempt
to
transmit with the antenna terminal left open,
When
testing
the
transmitter,
connect
@
80-ohm
dummy
load,
rated
at
more
than
100W
(TS-120S),
10W
(TS-120V)
Refer
to
Fig.
4-1
for
initial
contro!
settings.
When
the
TS-120S(V)
is
ready
for
transmission,
use
the
following
procedure:
SSB Operation
Set
the
MODE
switch
to
LSB
or
USB.
Meter switch to ALC.
Standby switch to SEND.
‘Speak
into
the
microphone
and
adjust
the
MIC
GAIN
for
‘meter
deflection
within
the
ALC
zone
at
signal peaks,
aunnae
NOTE,
aa
——
For
AFSK
or
SSTV
operation,
signal
may
be
input
through
the
MIC
jack.
Set
MIC
gain
for
approximately
50%
duty
(1/2-power)
as
read
on
the
le
meter
scal
‘© CW Operation
1.
Set
the
MODE
switch
to
CW
and
the
meter
switch
to
ALC.
2
Set
the
standby
switch
to
SEND
and
adjust
the
CAR
control
so
the
meter
deflects
within
the
ALC
zone.
If
a
key
1s
connected,
it
should
be
depressed
during
the
a
justment.
TS-120S
Power meter
Dummy toas
Fig. 4-4 Testing wi
Power Meter
Dummy Load or

4.2.1. FINAL STAGE PROTECTION
The TS-120S(V) features @ VSWR protection circuit to
protect the final-amplifier transistors. The circuit in the TS-
120V is different than the circuitin the TS-120S.
(1) TS-120v
If the VSWR increases because of improper antenna im:
pedance, the protection circuit activates to prevent the final-
stage transistors from being overloaded. In this case,
transmitter output power is reduced,
(2) TS-1208
Three different protection
1208,
1) The same VSWR protection method as used in the TS-
120V is used in the TS-120S. That is, the final-stage
transistors are protected by detecting VSWR of the
antenna system and automatically lowering transmitter
output power if the VSWR is too high.
ii) When the heat-sink temperature rises. a detection cir-
cuit activates a cooling fan. Under normal conditions,
this cooling fan sufficiently cools off the heat sink
radiator,
lil) The heat-sink temperature could rise abnormally during
long transmissions. if the area adjacent to the heat.
is blocked. In this case, the TS-120S automatically
returns to the receiving mode, and transmitting is not
possible until the heat-sink cools to the proper
temperature.
NOTES:— ——
1, If transmitter output decreases due to activation of the
protection circuit caused by high VSWR, recheck and
carefully retune the antenna system.
2, When the cooling fan starts, determine that adequate
air flow is possible in the heat-sink area.
cuits ate designed into the TS-
(3) Operation of the Cooling Fan
The cooling fan operates when the heat-sink temperature
tises, and it ceases to operate when the temperature
decreases to normal. The heat-sink is made of die-casting
aluminum and is actually the rear panel. It must be kept
Clear of surrounding objects. in order that heat will dissipate
easily.
The cooling fan is designed to operate when the heat-sink
temperature is at specific level, regardless of whether the
unit is in transmit oF receive mode
4.2.2, MIC GAIN CONTROL (Fig. 4-5)
This control adjusts the microphone input level. When using
the TS-120SIV) in USB or LSB mode, connect a microphone
and set the standby switch to SEND (antenna or dummy
load MUST be connected).
Set the meter switch to ALC and speak into the
microphone. Adjust the MIC GAIN control so the meter
does not deflect out of the ALC zone at signal peaks.
‘The TS-120S(V) accepts either a low or high impedance
microphone
(500
@
to
50
k®).
When
using
a
low
impedance
microphone (500 1) the MIC GAIN control should be ad-
vanced higher than when a high impedance microphone is
used. while observing the ALC meter.
© ALC (Automatic Level Control)
The ALC monitors the transmitter final stage output to
minimize distortion in your transmitted signal. It
automatically adjusts output to an optimum level
Powter should not dellect beyond
ALC one at signal peaks
Fig. 4-5 ALC Adjustment
4.3 VOX OPERATION
4.3.1. VOX SWITCH
VOX (voice operated transmit) is used to switch the TS-
120S(V)
into
transmit
mode
by
your
voice.
Depress
the
‘switch
ON
and
speak
into
the
microphone.
The
transceiver
‘automatically switches to transmit mode (the MIC control
should be adjusted in advance as explained in Item 4.2.2).
Both the send switch and the MIC P.T.T. switch are left in
the REC position
4.3.2. VOX GAIN CONTROL
This adjusts the VOX circuit sensitivity, Speak into the
microphone at normal voice levels and adjust the control
Clockwise increases sensitivity. allowing transmission with a
low
voice
level.
Transceiver
operating
condition
can
be
checked by the sound from the speaker. When the speaker
is silent. the transceiver is in transmit mode.
Note
that
if
the
control
is
advanced
too
far,
the
VOX
circuit
is
“tripped”
by
ambient
noise.
4.3.3. ANTI-VOX CONTROL
‘This
prevents
the
VOX
circuit
from
being
“tripped”
by
sound
from
the
speaker.
Adjust the control so the VOX will not operate at the desired
speaker volume level.

4.3.4. VOX DELAY CONTROL
This control adjusts the transmit hold time of the VOX cir
cuit. If the hold time is too short, the transceiver will turn
to receive mode as soon as you stop talking into the
microphone. This can be eliminated by turning the control
clockwise. Adjust the control comfortable operation at 3
normal rate of speech.
4.4 SEMI-BREAK-IN OPERATION
‘The TS:120S(V) has a built-in side-tone oscillator to permit
semi-break-in operation, besides the notmal CW operation.
During semi-break-in operation, the transceiver is placed in
transmit mode when the key is depressed. returns to and
receive mode when the key is released. The VOX circutt is
activated by the side-tone.
For semi-break-in operation. set the VOX switch ON and the
MODE switch to CW.
For semi-break-in operation, adjust the VOX GAIN to insure
that the transceiver is set in transmit mode whenever the
key is depressed. Also, adjust the VOX DELAY for desired
hold-in, VOX and ANTI VOX adjustments are not required
4.5
FIXED
CHANNEL
OPERATION
(Fig.
4-6)
The TS-120SIV) has a built-in crystal-contolled oscillator
{for fixed-channel operation. This featute is most useful for
commonly used frequencies. nets. or any situation where
crystal-controlled operation is required. To use the fixed-
frequency oscillator. turn the FIX switch to the FIX position.
The TS-120SIV) accepts a maximum of four crystals one
ich for the 7, 14, 21 and 28 MHz bands (the 28 MHz band
includes 28.0, 28.5, 29.0 and 29.5 MHz, s0 it is possible to
operate
in
28.1,
28.6,
29.1
or
29.6
MHz
with
a
28.6
MHz
crystal). For operation in the 3.5 MHz band. change the
position of the connector from the 28 MHz to the 3.5 MHz
position as shown in Fig. 4-6.
AR-GEN UNIT xesino.a
vas O
sioP TONE
26
714.2135 4 Jinser
000 0)sZ ic,
9000)
Qizessy——
@ TTT
16 Tes 1o4 pnd ane
na an _ eestor
1a
Pleas
Fig.
4.6
3.5
MHz
or
28
MHz
crystal
selection
The crystal frequency is determined by the following for:
mula
Crystal frequency (MHz) = 5.5 — X + Operating frequency
(MHz)
x Band Switch
Frequency (3.5. 70 etc.)
NOTE:
TRIO KENWOOD does not supply crystals.
Crystal Specifications:
Type of crystal holder HC-25/U
Oscillation frequency: 5.5 ~ 6.0 MHz
Multiplication Fundamental
Frequency tolerance =0.002% at normal temperature
Oscillation circu) See Fig. 4-7
Load capacity 260F
Equivalent resistance: 25: max
Drive level 2mw
a1
2sceso(e)
2
»
a2 25c1989(¥) $3

4.6 CW OPERATION (Fig. 4-8)
For CW operation, your transmit frequency should be
“zeroed” to the transmit frequency of your contact station.
Receive frequency is 800 Hz lower (as indicated by the
digital display) than the transmit frequency of your contact
station, so that his signal is received as a 800-H2 beat note
This also allows your contact to receive your signal without
having to retune receiver.
Tuning methods are detailed in the following paragraphs
Contact station frequency
1
‘Transmit
frequency
~
Recewe
trequency
ad
=e
Your frequency
Transmit
trequency
fecalvat
aquesiy
Fig, 4.8 Tuning for CW Operation
4.6.1. OPERATION WITHOUT OPTIONAL CW FILTER
Set the IF SHIFT control to its center position and the RIT
switch OFF. Adjust the main tuning knob for an 800-Hz
beat note and your transmit frequency will then coinside
with
that
of
your
contact
station
("zeroed").
During
recep-
tion, the side-tone monitor is activated by pressing down the
key (VOX OFF). In this case, listen to the side-tone superim-
Posed on the receive signal and adjust the main tuning for
similar side-tone and incoming CW avoid tone, By so doing.
transmit frequencies will be zeroed
You may now adjust the RIT for a pitch which suits your
preference. If intereference is encountered, adjust the IF
SHIFT. For more convenient and effective CW operation.
use of the optional YK-88C CW crystal filter is recommend-
ed,
4.6.2.
OPERATION
WITH
CW
FILTER
(YK-88C)
Set the
IF
SHIFT
to
its
center
position
and
the
RIT
to
OFF
Adjust
the
main
tuning
knob
for
maximum
deflection
of
the
S-meter.
Receive
signal
pitch
will
be
about
800
Hz.
in-
dicating
correct
tuning
14
4.63 KEY CONNECTION (Fig. 4-9)
Your
key
should
be
connected
as
illustrated
in
Fig.
4.9
when
using
an
electronic
keyer,
make
sure
that
polarity
is
correct.
Always
use
shielded
line
from
the
key
to
transceiver.
aw
To
wey
—
a4
Belore connecting, check thatthe
ws connect The KEY jack
jes = 9 Use shlded
Fig.
4.9
Key
Connection
4.7
MOBILE
OPERATION
(Fig.
4-10)
The
TS-120S(V).
being
compact
in
design.
is
ideal
for
mobile
operation.
Satisfactory
mobile
operation
is
achieved
through
proper
power
and
antenna
connection,
and
thought-
ful
transceiver
installation
and
adjustment.
4.7.1, TS-1208(V) INSTALLATION
Secure
the
TS:120S(V)
under
the
dashboard
using
an
op-
tional
MB:
100
mounting
bracket
as
shown
in
Fig.
4:10.
As
an
alternative,
use
strapping,
making
sure
that
the
TS-
120S(V)
will
not
slip
out
of
place
while
driving
the
vehicle.
ores: ———,
1.
Do
not
install
the
TS-120S|V)
near
the
heater
outlet.
2.
Allow
sufficient
space
behind
the
TS-120SIV}
to
ensure
proper ventilation
4.7.2.
HOW
TO
HANDLE
THE
POWER
CABLE
When
connecting
or
disconnecting
the
power
cable
to
or
from
the
power
connector.
be
sure
that
the
power
switch
is
always
in
the
“OFF”
position.
Observe
polarity
of
the
cable.
The
TS-120S(V)
operates
on
13.8
VDC.
negative
ground.
Battery
polarity
must
be
correct.
The
power
cord
is
color
coded:
CAUTION: Observe battery polarity.

Loading cot
nt
Jeumoer
mounting
es coaxial cable
tiweugh the crain hole
Use short heawy
Fuse should be as close 10 tho bat
terminal as possible
Fig. 4-10 Mobile Oper:
Since an MF antorra is lage and heavy must be installed to withstand
Strong wind atest,
WES
To ant term 15-1208)
Use fuse block. battery ce
fessory postion. 204 minim
Sm rating
AAs snon es possible ——_TS-120
Turn POWER sw
Delore connecting
1 sconnecting the power cord
h OFF
POWER CABLE
TS-120V TS-120S
red ® red and white @
red or black © black and gray ©
Connect the TS-120S(V) power cable to the battery ter-
‘minals, with consideration to current requirements and noise
Prevention. The maximum current drawn by the TS-120S
Feaches
to
between
18
and
20A
when
transmitting
Therefore, the cable should be made as short as possible. us-
ing the specified fuse. Also, determine that the power
system of the car (including the battery and generator or
alternator)
will
handle
the
increased
load
of
the
TS-120S\V).
Route battery and ANTENNA leads away from all high
voltage
secondary
circuits
to
prevent
ignition
noise
in-
terference.
4.7.3. MOBILE ANTENNA
(1) Antenna Installation
Use @ rugged mount for the mobile antenna because HF
antennas are larger (and have more wind load) and heavier
than VHF antennas. A bumper mount is recommended for
general use. The ground side of the mount must be ground-
‘ed perfectly to the body of the car since the body itself func-
tions as the ground plane for the mobile antenna. (Refer to
Fig. 4-10.)
Notes: —
1. Some cars have a urethane bumper.
ground the antenna mount to the body.
For such cars.
18

2. When tuning the newly installed antenna. use the TS-
120S(V) in the following procedure.
+ Turn the CAR control fully counter-clockwise for
minimum transmit power
+ With the TS-120S{V) in transmit mode. raise
transmit power output slowly by rotating the CAR
control clockwise. The antenna can be adjusted with
minimum power.
+ Transmitting with full power is recommended after
the
antenna
is
adjusted
for
@
VSWR
below
1.5:
3.
Antenna
installation
is
critical
for
successful
mobile
operation. For further information refer to THE RADIO
AMATEURS
HANDBOOK,
RADIO
HANDBOOK.
or
other texts
(2)
Coaxial
Cable
Connection
(Fig.
4-10)
When
the
antenna
is
mounted
on
the
vehicles
bumper.
the
coaxial
cable
from
the
antenna
can
be
routed
to
through
a
drain
hole
in
the
trunk.
When
the
antenna
is
roof
mounted
connect
the
cable
through
the
hole
in
the
door.
In
this
case,
care
should
be
used
not
to
allow
rain
water
to
come
into
the
vehicle
(3) Antenna Adjustment (Fig. 4-11)
Some
mobil
fe
not
designed
for
50-ohm
im-
pedance,
In
this
case.
impedance
matching
between
the
antenna
and
the
coaxial
cable
(502)
is
required.
7)
be
achieved
by
using
an
antenna
matching
device
or
coupler.
(One turn cot
Bumper Antennd
‘round
Grid Dip mater
Disconnect ~
Comsat cable
Fig. 4-11 Adjusting Antenna Resonance
The
antenna
to
be
used
should
first
be
checked
with
a
dip
‘meter
to
insure
that
it
is
designed
for
your
operating
band,
then
the
impedance
matching
should
be
checked
with
an
SWR
meter.
(See
Fig.
4-11)
‘The
VSWR
should
preferably
be
less
than
1.5:1
for
satisfac.
tory
operation.
For
antenna
adjustment
refer
to
the
antenna
instruction
manual.
4.7.4. NOISE REDUCTION
In
motor
vehicles.
ignition
noise
is
generated
by
the
ignition
Coil
or
distributor.
Other
sources
of
noise
include
the
wiper
or
heater
motor.
Although
the
TS-120SiV)
is
equipped
with
@
noise
blanker
to
minimize
ignition
noise,
it
is
imperative
that
some
prever
tive
measures
be
taken
to
reduce
the
noise
to
the
lowest
possible
level
(1)
Antenna
Location
Selection
Since
ignition
noise
is
generated
by
the
vehicles
engine,
the
antenna
must
be
installed
as
far
from
the
engine
as
possible
(2) Antenna Matching
In general, mobil
ntennas
have
a
lower
impedance
than
'50-ohm
coaxial
cable.
resulting
in
a
mismatch
between
the
‘antenna
and
the
coax.
Such
trouble
can
be
eliminated
by
using
an
antenna
tuner
between
the
TS-120S(V)
and
the
coaxial
cable.
Matching Circuit Examples
ar-i20
our eur
Pur,
sllask
°
-o
Fig. 4-12 Matching Circuits
(3) Bonding
The component parts of motor vehicles, such as the engin
transmission, muffler system, accelerator, etc., are coupled
to one another at DC and low frequencies, but are isolated at
high frequencies. By connecting these parts using heavy,
braided ground. straps. ignition noise can be reduced. This
connection is called “bonding’
(4) Use Ignition Suppressor Cable or Suppressor Spark
Plugs
Noise can be reduced by using spark plug with internal
resistors, or resistive suppressor ignition cable.
(5) Battery Power Connection
It is recommended that battery power be supplied directly to
the TS-120S(V) from the battery terminals,

es
(6) Battery Capacity
The
power
system
of
2
motor
vehicle
is
comprised
of
@
battery and an alternator (when generates power while the
‘engine is running) to supply current to loads or to charge the
battery.
Since the transceiver draws hi current. during transmit care
should be excersised so the power system is not overloaded.
When using the transceiver. the following points should be
observed
from
the
viewpoint
of
battery
maintenance
@
Turn
the
transceiver
OFF
when
the
lights.
heater.
wipers
‘and
other
high-draw
accessories
are
used,
®
Avoid
transceiver
operation
when
the
engine
is
not
run-
ning,
@
Mf
necessary.
use
an
ammeter
and/or
a
voltmeter
to
‘check battery condition
4.8 FIXED STATION OPERATION
4
The TS-120V power requirement is 4A at 13.8 VOC when
transmitting
with
full
power.
The
Kenwood
model
PS-20
power supply for fixed stations matches the TS-120V in
design and performance.
The TS+120S requires more than 18A at 13.8 VDC when
transmitting with full power. Use the Kenwood model PS-
30 power supply for fixed stations,
Power
4.8.2. ANTENNA
Fig. 4-13 Rotary Beam Antenna
For
HF
fixed-station
operation.
an
antenna
specifically
designed
for
amateur
operation
is
recommended.
Antenna
types
include
the
wire
antennas,
verticals.
rotary
beam.
and
other
antennas.
HF
antennas
are
quite
large
and
must
be
in-
stalled
to
withstand
strong
wind.
heavy
rain,
etc
Any
antenna
used
with
the
TS-120S(V)
should
be
of
50
ohm
impedance
and
should
be
connected
using
an
ap-
Propriate
coaxial
cable
such
as
RG-8/U
Impedance
matching
is
important.
Impedance
mismatching
will
result
in
a
high
VSWR
and
power
loss,
or
can
cause
un-
wanted
harmonic
radiation
and
interference
(TVI,
BCI).
The
impedance
match
can
be
checked
with
an
SWR
meter.
Generally
satisfactory
operation
is
assured
when
the
VSWR
(Voltage
Standing
Wave
Ratio)
is
less
than
15:1
For
impedance
matching
between
the
antenna
system
and
transceiver,
use
of
the
AT-120
Antenna
Tuner
(option)
is
recommended.
A
rotary
beam
antenna
is
very
effective
for
OX
operation
in
14,
21
and
28
MHz
bands.
(Fig,
4-13)
NOTE:
Protect
your
equipment
~
use
a
lightning
arrestor.
4.9
DIGITAL
DISPLAY
CALIBRATION
4-14)
Connect
the
antenna
and
set
the
BAND
switch
to
WWV.
Turn
the
main
tuning
dial
to
about
"600"
to
receive
the
15:
MHz
WWV
signal.
Adjust
the
dial
until
a
low-frequency
beat
is
heard.
Next,
depress
the
CAL
switch
and
a
marker
signal
is
superimposed
on
the
WWV
beat
signal.
A
double
beat (two
beat
signals
of
high
and
low
frequencies)
will
now
be
heard.
While
receiving
this
double
beat,
adjust
the
Counter
unit
trimmer
through
the
reference
frequency
adjustment
access
‘opening
(at
the
side
of
the
TS-120S(V})
so
the
two
beats
heard
as
a
single
beat.
This
completes
calibration
of
the
Digital
Display.
After
calibration
depress
and
release
the
CAL
switch
&. ener a
Fist
tomove
cover
4-14
Digital
Display
Calibration
4.10
ANALOG
DIAL
CALIBRATION
(Fig.
4-
15)
The
main
dial
scale
is
graduated
at
1-kHz
intervals.
One
revolution
of
the
main
dial
covers
25
kHz.
To
calibrate
the
scale.
turn
the
CAL
switch
ON
and
in
SSB
mode
zero-beat,
‘0r
in
CW
mode
tune
for
an
800
Hz
beat.
Hold
the
main
tun-
ing
knob
from
rotating
and
slip
the
calibration
ring
to
the
nearest
major
(5
kHz)
graduation.
The
dial
is
now
calibrated,
Note:
For
exact
frequency,
read
the
Digital
Display.
7

SECTION
5.
ADDITI
5.1
GENERAL
INFORMATION
Your
TS-120S(V)
has
been
factory
aligned
and
tested
to
specification
before
shipment.
Under
normal
circumstances,
the
transceiver
will
operate
in
accordance
with
these
operating
instructions,
If
your
transceiver
fails
to
work.
contact
the
authorized
dealer
from
which
you
purchased
it
for
quick.
reliable
repair
All
adjustable
trimmers
and
coils
in
your
transceiver
were
Preset
at
the
factory
and
should
only
be
readjusted
by
a
Qualified
technician
with
proper
test
equipment
Attempting
service
or
alignment
without
factory
authori
tion
can
void
the
tansceiver's
warranty,
5.2
INSTALLING
THE
CW
FILTER
YK-88C
Figure
5-1
illustrates
cabinet
removal.
Remove
the
eight
top-cover
and
seven
bottom-cover
screws
and
lift
away
the
panels,
CAUTION:
The
speaker
lead
is
attached
to
the
chassis.
so
be
careful
when
removing
the
top
cover.
The
lead
can
be
unplugged.
if
necessary
Install
the
filter
unit
as
follows:
1,
Disconnect
power
BEFORE
proceeding,
2,
Remove
the
bottom
cover
3,
Remove
6
screws
holding
the
IF
unit
(X48-1210.01)
located
behind
the
Band
switch,
4,
Install
the
filter
on
the
IF
circuit
board,
Solder
the
four
pins
from
the
rear
using
a
low-power
soldering
pencil
(25
W)
Fig.
5-1
Cabinet
Removal
and
YK-88C
Installation
5.
Move
the
connector
(29)
to
its
alternate
position
18
ONAL
INFORMATION
5.3
HOW
THE
TX
FINAL
TRANSISTORS
ARE
PROTECTED
Final
transistor
protection
is
provided
by
sampling
the
reflected
power.
As
the
reflected
power
is
increased
(higher
'SWA)
transmitter
drive
is
reduced,
thus
decreasing
input
to
the
final
transistors.
This
in
turn
reduces
collector
loss,
Protecting
the
final
transistors.
5.4
ORDERING
SPARE PARTS
When
ordering
replacement
or
spare
parts
for
your
equip-
‘ment.
be
sure
to
specify
the
following:
©
Model
and
serial
number
of
your
transceiver,
Schematic
‘umber
of
the
part.
Printed
circuit
board
number
on
which
the
part
is
located,
Part
number
and
name,
if
known,
and
Quantity
desired,
Nove:
A
full
service
manual
is
available
as
a
separate
publication,
5.5
SERVICE
‘Should
it
ever
become
necessary
to
return
the
equipment
for
‘repair,
pack
in its
original
boxes
and
packing,
and
include
a
full
description
of
the
problems
involved.
Also
include
your
telephone
number.
You
need
not
return
accessory
items
unless
directly
related.
to
the
service
problem.
Tag
all
returned
items
with
your
call
for
easy
1.0.
Please
mention
the
model
and
serial
number
of
your
radio
in
any
correspondence,
whether
phone
ot
written.
For
future
reference.
record
this
information
in
the
space
provided
on
the
back
cover
of
this
manual.
Nore:
$$
When
claiming
warranty
service,
please
include
a
photocopy
Of
the
bill
of
sale.
or
other
proof of
purchase
showing
the
date
of
sale.

The following optional accessories are available for use with
the TS-120S(V)
=
*
Mode! PS-20
Regulated
OC
Power
Supply
Perfectly matches the design and characteristics of the TS.
120V. Equipped with a protection circuit which guards
transceiver against damage due to shorts or overload.
= Model PS-30 Regulated DC Power Supply
The PS-30 is @ regulated DC power supply with a large
capacity. The output is 13.8 VDC/20A (Intermittent), Since
terminals for 13.8 VDC/SA are also provided, in addition to
‘output power cables for use with the TS-120S. the PS-30
‘can be used as a power source for other mobile transceivers
(such as 2-meter rigs)
= Model AT-120 Antenna Tune
‘The AT-120 is a compact antenna tuner designed for use
with the TS:120S(V) in either a mobile or fixed station. The
'SWR meter is illuminated so that it can be used in the car
‘even at night, Also, it is equipped with @ highly accura
SWR detecting circuit for matching within the impedance
range between 20 and 300 ohms on five bands between 3.5,
and 29.7 MHz,
= Model VFO-120
The VFO-120 is an all solid-state VFO with high stability.
designed to match the TS-120S(V) in design and perfor:
mance. “Split frequency” operation is possible by using the
TS-120SIV) with the VFO-120. Also, the T-F switch makes
it possible to check the transmit frequency while in the
recewing mode.
= Mode! SP-120 External Speaker
The SP-120 is an external speaker designed exclusively for
Use with the TS-120S{V). It matches the TS-120SIV) in
design and tone quality.
= MICROPHONE MC-30S, MC.35S
Dynamic microphone with PTT switch specifically designed
for mobile operation.
Impedance: 50 k@ (MC-30S)
500 © (MC-35S)
= MICROPHONE MC-50
Unidirectional dynamic microphone with locking PTT switch
provides excellent performance for VOX operation,
Impedance: 50 k and 600% (switchable)
= HEADPHONE HS-4
High-performance
dynamic
headphones
with
specially
designed
ear
pads
for
listening
Impedance:
8
= YK
}C CW CRYSTAL FILTER
High
selectivity
(500
Hz
st
—6
GB,
1.5
kHz
at
—60
48)
crystal
filter
for
CW
operation.
Easily
installed
in
the
TS-
1208(V),
= * HAM.CLOCK HC-2
24-hour type clock with pre-fix dial for easy reading of time
Im most of countries in the world. It operates more than one
year
on
a
single
battery
= * DE-LUXE HEADPHONE HS-5
Open-back type headphone designed for excellent tonal
‘quality and comfortable fit. The air type ear pads can be
readily replaced with the pressure type ones.

+ Ps.20
AT.120
vFO.120
$P-120
Me-s0
#4
Hs.
not available in US.A