Kenwood TS-940S User manual

Button/Knob Initial Setting function Manual Reference
fcw means fully clockwise fccw means fully counterclockwise
POWER OFF out) check external power switch
TIMER clock, ON/OF, 24 hr event 37,38
VOX/MAN MAN out) sound-actuated transmission 24
FULL/SEMI CW break 23
MONI allows monitoring of xmit signal 8,10,14,16
DIM OFF out) panel lights 19
SEND/REC REC out) manual PTT 9,11,15,17
AUTO/THRU AUTO in) antenna tuner on, NoOp while lite on 18
NAR/WIDE Normal IF or optional CW filter 10,12
ATT fccw attenuates input signal 24
AGC SLOW for SSB how fast gain control reacts to changes 25
METER ALC then SWR check mic w/ALC; meter function in xmit 20
NB1 & NB2 OFF out) auto ign / woodpecker 22
PROC PROC in) speech processor 24
NB LEVEL 12 o'clock 22
PROCESSOR 12 o'clock increase “talk power” 24
MIC/PWR 12 oclock/ fcw transmit power for SSB 100 w 9,15 8,10,14,16
MODE: LSB 9.5 mHz USB 8-17
T-F SET split operation-spot freq 20
A/B VFO A or B 19
SPLIT OFF used for split operation 19
A=B idle VFO set to active VFO 19
F-LOCK tuning and band switch 19
VOICE announce freq 19
NOTCH knob OFF fccw) reduce heterodyne on CW 22
SQL OFF fccw) reduce background noise 9,13,15,17
PITCH OFF fccw) CW pitch 26
AF TUNE knob OFF fccw) 26
RIT CLEAR then OUT shift Rcv 9.99 kHz 26
XIT CLEAR then OUT shift xmit 9.99 kHz 26
NOTCH sw OFF out) enable NOTCH knob 22
AF TUNE sw OFF out) Opposite of NOTCH, rejects interference 26
RIT/XIT fccw/fccw incremental tuning 26
AF/RF 12 o'clock/fcw volume/gain 26
CW VBT fcw like SSB slope, but narrows both 21
SSB SLOPE HIGH fcw LOW fccw reduce IF bandwidth to reduce interference 21
numeric keypad ENT freq ENT 34
AT.T force autotune; NoOp while lite on 18
fast dial spin increases tuning rate 19
1
2
3
4
1
2
3
4

INSTRUCTION MANUAL
HF TRANSCEIVER
Model TS-9405
r- NOTES: - - ~
1 If the timer switch is set to ON, the unit somer1mes does not function even when
the POWER SWitch IS SAt to QN
2. When the squelch is not in use. turn the SOL control fully counterclockwise If the
control is turned fully clockwise, the reception sound sometimes cannot be heard.
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CONTENTS
Unpacking .............................. .. ..... ... .. ...... .. ... .. ............. .. 3
Operating Precautions.................................................... 3
Features.......................................................................... 3
1.
PREPARATION BEFORE USE .............................. 4
1-1. Installation Precautions .................................. 4
1-2. Cooling
Fan Operation .................................... 4
1-3. Front Feet........................................................ 4
1-4. AC Power........................................................ 4
1-5. Antenna
.... .. ................ .. .............. .. .............. . .. . 5
1-6. Grounding....................................................... 5
1-7. ShortWave Reception.................................... 5
2. CONTROLS,
INDICATORS AND
CONNECTORS ..... ... .. .......... .. ......... ..... .. .. ... .. ......... 6
3. OPERATION 1........................................................ 1
3-1. Headphones and Microphones....................... 1
3-2. Initial Switch Setting....................................... 7
3-3. SSB Operation ................................................ 8
3-4.
CW Operation .. ................ .. .................. .. ...... .. . 10
3-5. AM Operation.................................................. 12
3-6. FM Operation .. ........ .. ........ .. ...... .. .................... 14
3-7. FSK (RTTY) Operation..................................... 16
4. AUTO ANTENNA TUNER OPERATION .............. 18
5. OPERATION 2........................................................ 19
5-1 . Frequency and Band Selection ........ .. .. ........ . 19
5-2. Indicators...................................................... 19
5-3. Function Switch Operation........................... 19
5-4. Dual
VFO Operation...................................... 20
5-5. T-F Set Operation ........................................ . 20
5-6. Meter............................................................ 20
5-7. Interference Reduction Capability................. 21
5-8. Noise Blanker................................................ 22
5-9. Zero Beating ................................................. 23
5-1 0. CW Break-in.................................................. 23
5-11. VOX Operation.............................................. 24
5-12. Speech Processor......................................... 24
5-13. OtherControl and Switch Functions ............ 24
5-14. RTTY............................................................. 27
5-15. Connectors ................................................... 29
6. MEMORY OPERATIONS...................................... 31
6-1 . Memory Channel Entry ................................... 31
6-2. Memory Recall ................................................ 32
6-3. Memory Scan.................................................. 33
6-4. Program Scan ................................................. 33
6-5. Direct Keyboard Frequency Entry ................... 34
6-6. Clearing Memory............................................. 34
7. SUB-DISPLAY FUNCTION................................... 35
7-1. Setting the Clock............................................ 35
7-2. Graphic Display............................................... 36
7-3. Frequency Display .......................................... 36
8. TIMER FUNCTIONS ............................................... 37
9. OPTIONALACCESSORIES .................................. 40
9-1. Peripheral Devices and Options...................... 40
9-2. Installation of Accessories.............................. 42
9-3. Optional Filter Installation............................... 42
9-4. AT-940 Installation ........................................ 43
9-5. VS-1 Installation............................................. 44
9-6. S0-1 Installation............................................. 44
10. CIRCUIT DESCRIPTION....................................... 47
10-1. Frequency Configuration .............................. 47
10-2. Local Oscillator
PLL Circuit .......................... 47
10-3. Receiver........................................................ 47
10-4. Transmitter...................................................
49
10-5. Antenna Tuner.............................................. 49
11. MAINTENANCE AND ADJUSTMENT ................. 50
11-1. Preparation ................................................... 50
11-2. Adjustments................................................. 50
11-3. Maintenance................................................. 51
11-4. How to Initialize Microprocessor.................. 52
12. IN CASE OF DIFFICUL TV .................................... 53
13. INTERNAL VIEWS ................................................ 54
14. BLOCK DIAGRAMS.............................................. 55
15. SPECIFICATIONS ................................................. 58

• UNPACKING
Remove the TS-940S from its shipping container and
packing material and examine
it for visible damage. If the
equipment has been damaged in shipment,
notify the tran-
sportation company immediately. Save the boxes and
packing material
for future shipping .
The
following accessories should be included with the
transceiver.
1. Instruction Manual (B50-8002-1 0) ............................. 1
2.
13-pinDINplug(EOJ-1351-05) .................................. 1
3. 7 pin DIN plug
(E07-0751-05) ....................................
4. Fuse (6A)
(F05-6021-05) or
(4A) (F05-4022-05) ............................................
5. Power cable.................................................................
6.
Warranty card ................................................................
• OPERATING PRECAUTIONS: READ
BEFORE OPERATING
Read this instruction n:_~anual carefully before attempting
operation of your new TS-940S. While this set is similar
to others you may have owned before. there are many fea-
tures
that are new or unique to this radio. Familiarize your-
self
with the operation of controls and procedures before
you even apply power. Note
that the final power transis-
tors might be damaged during transmission if the trans-
ceiver is operated
into an improper load.
1. If the built-in antenna tuner is used, operate at full
power only after automatic tuning is completed.
2. Use only a resonant
50 ohm antenna which has been
adjusted
for an SWR of 1.5 to 1 or less.
3.
DO NOT transmit without an Antenna or 50 ohm load.
THE FOLLOWING DEFINITIONS APPLY
IN THIS MAN-
UAL:
NOTE:
If disregarded, inconvenience only -no da-
mage
or personal injury.
CAUTION: Equipment damage may occur. but not per-
sonal injury.
• FEATURES
Circuit Configuration providing Receiver Performance of
the Highest Quality.
1. Trio-Kenwood has succeeded in achieving the highest
level dynamic range
of 102 dB (with an IF bandwidth of
500Hz.)
2. General coverage receiver section tunes from 1 50 kHz
-30 MHz.
3. The transceiver can operate in any
mode (SSB, CW.
AM. FM or FSK).
4. Every possible function has been adopted to eliminate
radio interference.
• SSB slope tune
e CWVBT
• Notch (1 00 kHz IF notch)
e AF tune
e Variable CW pitch circuit
• Dual Noise Blankers
e 10 Hz Step RIT /X IT with a ± 9.99 kHz tuning range
employing an optical encoder
• Four step RF ATT control prevents saturation upon re-
ception
of excessive signal inputs.
Transmitter Section with Low Distortion and High Re-
liability
1. The power supply voltage of 28V has been adopted to
assure the lowest distortion.
2. Semi break-in
or full break-in.
3.
Auto tuner available built in or as an optional accessory.
4. Built-in
RF speech processor.
Microprocessor Control of various Digital functions
1. VFO with auto quick tuning function
2. Built-in Dual digital VFO's
3. Direct entry of frequency from the key board.
4. 40-Channel
Memory
5. Two types of frequency scan
Program scan
Memory scan
Design and Construction Appropriate to a Quality
Transceiver
1. Dual displays
• Main display is a large, two color fluorescent dis-
play.
• Sub-display consists of a 2-line, 16 digit liquid crystal
dot matrix.
2. Built-in
24 hourdigital clock with timer
3. Ali-in-one type construction containing all components
from AC power supply to speaker
3

1. PREPARATION BEFORE USE~~~~~~~~~~~
1-1. INSTALLATION PRECAUTIONS
Choose an operating location that is dry and cool, and
avoid operating the transceiver in
direct sunlight.
Allow at least 3 inches clearance between the back of the
equipment
to any object. This space allows an adequate
airflow from the ventilating fans to keep the t~ansceiver
cool.
1-2. COOLING FAN OPERATION
The cooling fan operates automatically when the heat sink
temperature rises, and stops
when the temperature falls.
The heat sink is die-cast aluminum integral with the rear
panel for sufficient heat dissipation. Therefore, the cooling
fan will rarely operate during ordinary operation.
If the cooling fan operates, insure adequate ventila-
tion to insure good heat dissipation.
4
1-3. FRONT FEET
By extending the front feet, the front panel can be elevated
for operating convenience.
Turn the
front feet left and pull down.
Then turn right to lock.
~~
~, ..
-- ..
Front feet extension
1-4. AC POWER
The TS-940S is supplied to operate from a 1 20V AC,
220V AC or 240V AC 50/60 Hz power source capable of
supplying 51 0 watts or more.
For units shipped
to the U.S.A., the switch is set for
1 20 VAC with a 6-ampere fuse installed.
For units shipped to European, Central, South Ameri-
can, and African countries, the
switch
is set
for
220 VAC with a 4-ampere fuse installed.
For units shipped to Oceania countries, and U.K. the
switch is set for 240 VAC with a 4-ampere fuse in-
stalled.
Rear panel
ACJ20V
220V /240V
0
CID
'"'"VOLTAGE_
SELECTOR
I
Set to your
u""f'"'""
--\------.,~
Voltage selector switch on the rear panel
~'l
~~~A
q\. ·~ '"'AC!20vo"'
@)~ '~ ..
4A ~
For AC 220 ~ 240 volts
Fuse replacement

1-5. ANTENNA
Any of the common antenna systems designed for use on
the high frequency amateur bands
may be used with the
TS-940S, provided the input impedance of the transmis-
sion line is
not outside the capability of the AT-940 Auto-
matic Antenna Tuner pi-output matching network. The
transmission line should be coaxial cable. An antenna sys-
tem
which shows a standing wave ratio of less than 1.5 : 1
when using 50 ohm coaxial transmission line, or a system
that results in a transmission line input impedance that is
essentially resistive, and between 20 and 1 50 ohms will
take power from the transceiver through the AT-940. If
open wire or balanced type transmission line is u.sed with
the antenna, a suitable antenna tuner with balun is recom-
mended between the transceiver and the feed line.
Methods of construction and operating such tuners are
described in detail in
the ARRL Antenna Handbook, or
similar publications. For operation on the 160, 75 and 40
meter bands, a simple dipole antenna, cut to resonance in
the
most used portion of the band, will perform saticfacto-
rily. For operation on the 1
0, 15 and 20 meter bands, the
efficiency
of the station will be greatly increased if a good
directional rotary antenna is used. Remember
that even
the
most sophisticated transceiver is useless without a
good antenna.
CAUTION: -----------------------------
Protect your Equipment- Use a LIGHTNING ARRESTOR.
1-6. GROUNDING
Making a good earth connection is important for prevent-
ing 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 of
the TS-940S. A thick wire, cut as short as possible,
should be used
for the connection.
A
city water pipe cannot be used as a good earth in some
cases. To make a good earth connection,
connect the
GND terminal
to a metal water pipe grounded.
Never use a gas pipe
or electrical conduit pipe.
NOTE: ---------------------------------
A ground connection that is a 1/4 wavelength or its multi-
ple
may provide a good DC ground, but it will not provide a
good
RF ground.
Beam antenna
Ground plane antenna
Dipole antenna
OK

1-7. SHORTWAVE RECEPTION
1st
2nd
3rd
kHz
Zone Zone Zone
148.5
Low frequency
broadcast band
283.5
525
Med1um frequency
broadcast band
1606
1705
1800
160m
2000
amateur band
2300
2500
3200
90 m
3400
broadcast band
3500
80 m
3800
amateur band
3900
3950
75 m
4000
broadcast band
4750
60 m
5000 broadcast band
5060
5950
49 m
broadcast band
6200
40 m
7000
amateur band
7100
41 m
7300
broadcast band
9500
9900
31m
broadcast band
10000
10MHz
MHz
1st 2nd
3rd
Zone Zone Zone
10.100
10.150
30m
amateur band
11.650
25m
12.050
broadcast band
13.600
13.800
14.000
20m
14.350 amateur band
15.000
19m
15.100
broadcast band
15.600
17.550
17.900
18.068
17m
18.168
amateur band
20.000
21 000
15m
21.450
amateur band
21.850
13m
broadcast band
24.890
12m
24.990
amateur band
25.000
25.670
11m
26.100
broadcast band
28.000
10m
29.700
amateur band
1st Zone:
Europe and Afnca ISov1et Russia, Turkey and Mongolia mcludedl
2nd Zone:
South and North Amenca
3rd Zone:
Asia and Ocean1a ISov1et Russia, Turkey and Mongol1a excluded)
•
In some countnes. frequenc1es allocations do not accord w1th th1s
table.
- - - Standard t1me frequency
{.;.;.:.:J General broadcast band
EZLZJ Troptcal broadcast band
- Amateur band
c=::J Other stations
Radio Frequency Allocation
Frequency Distribution in the Broadcast and Amateur
Bands.
The TS-940S receiver covers from 150kHz to 30 MHz, to
receive international broadcast and communication ser-
vices.
As shown in the Frequency Allocation Chart, above figure,
broadcast and Amateur radio station frequencies are allo-
cated in specific bands expressed in megahertz (MHz) or
wavelength in.meters (m). Also in the above figure the fre-
quencies
of "other stations" are assigned for fixed station
business use, marine mobile, aviation mobile, land mobile,
radio beacon stations, etc.
NOTE:
1. Radio stations throughout the world are listed in the
WORLD RADIO TV HANDBOOK or similar publications.
2. Antennas designed for HAM BAND operation will gen-
erally provide satisfactory reception for SW sta-
tions near the
HAM BANDS. For antenna construction
details, see the ARRL ANTENNA HANDBOOK, or similar
publications.
5
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TOP COVER
Slide lid opened
p
CAR FM MIG
Q)
LEVEL GAIN SUB Dl~~ MEMORY
·~ "TID
~--~- 3
~o-~ :
-VOX CONTROLS
-~, CAL
GAIN DELAY AN
Tl OLQJF
~· ..
_?I_»PL"'
··- ·5-
IO~Hl-
)-
SCALE
IMHz 100kHz
o-
0
4::Y
®
D
® B ©
FRONT PANEL
REAR PANEL
6
3
(!)
5
6
7
CD CAR LEVEL (carrier level) control
Used to adjust carrier level during CW.
® FM MIC GAIN (microphone gain) control
Used to adjust microphone amplifier gain in FM.
® Memory group selector switch
Allows to selection of the desired memory channel
group.
@ SUB DISP. CONTRAST control
Allows you to adjust the contrast of the sub display, us-
ing a (-) screwdriver.
® CAL (marker) switch
When this switch is ON during reception, the
built-in oscillator will generate a marker signal at 1 00
kHz intervals. This switch is also used to zero beat the
internal oscillator frequency with a standard fre-
quency (WWV).
® 10 Hz indication switch
Allows frequency indication down to the nearest 10 Hz
digit.
(]) Analog SCALE selection switch
Used to select the analog scale range, 1 MHz or
100kHz.
(]:: VOX control
® GAIN: Used to adjust VOX amplifier gain.
@ DELAY: Used to adjust delay time.
© ANTI: Used so that VOX will not be actuated by the
internal speaker sound.

FRONT PANEL
CD VOX switch ¢ page 24
® POWER switch
® CW break-in selector switch ¢ page 23
® MONI (monitor) switch¢ pages 8,1 0, 14, 16
®TIMER switch¢ page 38
® DIM (Dimmer) switch¢ page 19
(J) A TT switch ¢ page 24
® AGC switch¢ page 25
® Meter¢ page 20
®METER switch¢ page 20
([]) Main display
© F. LOCK indicator¢ page 19
@ON AIR indicator¢ page 19
(j]l VFO A indicator¢ page 19
@.@ ANT TUNE indicator¢ page 19
@ VFO B indicator¢ page 19
@MEMO (Memory) channel indicator¢ page 19
@ SPLIT indicator¢ page 19
® RIT indicator¢ page 19
® XIT indicator¢ page 19
Q~ NOTCH indicator¢ page 19
® MS (Memory scan) switch¢ page 33
® CLOCK switch¢ page 35
® Sub-display¢ page 35
® PG. S (Program scan) switch¢ page 33
® GRAPH switch¢ pages 35, 36
@ HOLD switch¢ page 33
® SCROLL switch¢ pages 34, 35
® SET switch¢ page 35
@ M. CE switch¢ page 34
@ RIT switch¢ page 26
@ RIT /X IT control¢ page 26
~NOTCH control¢ page 22
@ XIT switch¢ page 26
® SOL control¢ pages 9, 13, 15, 17
® CLEAR switch¢ page 26
@ RF (gain) control¢ page 25
@ PITCH control¢ page 26
® NOTCH switch¢ page 22
@]) AF TUNE control¢ page 26
@ AF TUNE switch¢ page 26
@ REC/SEND stand-by switch¢ pages 9, 11, 15, 17
@ MIC (Microphone) connector¢ pages 7, 29
@ PHONES jack¢ pages 7, 29
@ AUTO-THRU selector switch¢ page 18
@ NAR/WIDE switch¢ pages 10, 12
@ NB 1 switch¢ page 22
@ NB control¢ page 22
® NB 2 switch¢ page 22
® PROC switch ¢ page 24
~p PROCESSOR-IN control¢ page 24
$]) PROCESSOR-OUT control¢ page 24
~ MIC (microphone gain) control¢ pages 9, 15
~·~ PWR (RF power) control¢ pages 8, 10,14, 16
@ MODE switch¢ pages 8 ~ 17
® Main tuning control¢ pages 8 ~ 17
® T-F SET switch¢ page 20
® A/B switch¢ page 19
® VOICE switch¢ page 19
® F. LOCK switch¢ page 19
® A= B switch ¢ page 19
® SPLIT switch ¢ page 19
I@ VFO/M switch¢ page 31
® 1 MHz step switch¢ pages 8 ~ 17
® M ~ VFO switch¢ page 33
® M. IN switch¢ page 31
@ BAND KEY (1 - 1 0) switch¢ pages 8 ~ 17
(@) AT. T switch ¢ page 18
® ENT (Enter) switch¢ page 34
® VBTcontrol ¢page 21
© AF (audio gain) control¢ page 26
@ SSB SLOPE TUNE HIGH CUT control¢ page 21
@ SSB SLOPE TUNE LOW CUT control¢ page 21
REAR PANNEL
CD Antenna connector
Connect an antenna with an impedance of 50 Q, with
an SWR of 1.5 or less.
® GND (ground) terminal
Used to make TS-9405 ground. Connect using as thick
and short a wire as possible.
® RX ANT terminal selector switch
Used to disconnect the TS-9405 receiver. Supplies an
antenna connection to an external receiver.
® Transverter connector
For details, see page 29.
® Remote connector
This connector is used when a linear amplifier is used.
@IF OUT jack
IF 1 is for connection to the SM-220 for Pan Display.
(8.83 MHz)
IF 2 is for connection to the SM-220 for RX Modulation
Display. (1
00 kHz)
(])PHONE PATCH jacks
The IN terminal is used for transmit audio from the
phone patch
(600 Q ).
The OUT terminal is used for received audio from the
transceiver
to the phone patch (600 Q ). These jacks
can also be used
for input to and from SSTV, or RTTY
terminals.
@ RTTY jack
For connection to an RTTY interface unit. (direct keying)
@ EXT SP (external speaker)
This terminal is for an external speaker.
@) CW KEY jack
Used to connect the key during use of CW.
® Accessory terminals
@ Fuse Holder
@ AC power connector
Connect the supplied power cord.
@VOLTAGE SELECTOR switch
Used to select the correct line voltage.

3. OPERATION 1
3-1. HEADPHONES AND
MICROPHONES
Headphones
The Trio-Kenwood headphones HS-4, HS-5, HS-6 and
HS-7 can
be used with this transceiver. When using other
headphones, use 4
to 16 ohms impedance. Stereo head-
phones can also be used.
Microphones
The Trio-Kenwood microphones MC-42S (handheld),
MC-60A, MC-80, MC-85 (table-top type) are recommend-
ed.
~----1 A f---------------1 B 1------.
[ '••n•lo•me• ~ f J f
M<eoophone D E3\\ c---: ~
lil'th•s ~w!lt.h
0
----o
Transformer
!c) not thrs
tO K .-..... 33 K
~TS-9405
MrcrophoneoL ~~c;~:c~~~e
~L(
0 UP
8V/approx. 10 mA
®DOWN
NC@
CD STBY
Headphone
HS-4, HS-5
HS-6, HS-7
GNO (MIC) 0 MIC
Microhone
MC-425, MC-60A
MC-80, MC-85
Either a low or high impedance microphone (500 Q ~ 50
k.Q may be used. The PTT switch must be isolated from
the microphone audio circuit as shown in lA]. Use a mi-
3-2. INITIAL SETTING CONFIRMATION
Prior to operation ensure the following switches and
controls are
set as indicated in the figure below:
ITJ Ensure the POWER switch is OFF.
~ An antenna must be connected.
Caution:------------------
Nevertransmit without the antenna connected.
FRONT PANEL
REAR PANEL
® GNO(STBYt
MIC connector (FRONT VIEW)
crophone with a separate switch and MIC line so both PTT
and VOX may be selected. Figure
[ID shows the circuit
that should be used for high output microphones such as
the Shure
444, and the D-1 04.
Note:
Ensure the VOLT AGE SELECTOR switch is set for your AC
line voltage.
@] A ground must be connected.
~ The power cord is connected.
[[] Ensure the front panel controls and switches are set
as shown in the figures below.
~ The RX ANT switch is OFF.
(PITCH)
12 o'clock
Turn fully clockwise. (RF Gain)
7

3-3 SSB OPERATION
ATT (RF attenuator) switch
into the receiver antenna circuit, to pro-
tect the RF amplifier and mixer circuits
from distortion caused
by excessive in-
put signal levels.
NB (noise blanker) switch/ --~
control ® (page 22)
NB1: Used to reduce/eliminate short
duration pulse noise such as
an
auto ignition ..
NB2: Use to reduce/eliminate long
duration pulse noise such as
the "Russian Woodpecker".
RECEIVE
OJ Turn on the power.
MONI (monitor) switch G)-----.
Allows monitoring of your transmit ~--~
signal.
VOX switch G) (page 74'1-----.
Used to operate VOX.
AUTO/THRU selector switch G)
(page 18)
AUTO: Antenna tuner is on.
THRU: Antenna tuner is off.
MIC (microphone) connector
Connector for microphone.
AGC switch @(page 25) ----.
OFF- Used to disable the AGC. (Turns
OFF the S-Meterfunction)
FAST- Normally used for CW and FSK.
SLOW- Normally used for SSB, AM
and FM.
PROC (processor) switch/ --f---------_j
control G) (page 24) PWR (RF power) control GJ
Used to actuate the speech processor Controls the transmit power in SSB,
circuit. CW and FM modes. Clockwise rotation
increases
power output.
~ The meter lamp lights and a frequency is shown on
the display.
[±] Select the desired band by operating the BAND/
KEY switch or with the 1 MHz step switch.
['§] Adjust audio volume with the AF (audio gain) control.
[§"] Adjust the main tuning control so that the desired sig-
nal may be clearly heard.
~ For operation up to the 7 MHz band, place the MODE
switch to LSB. For operation on or above the 10 MHz
band, use the USB mode.
8
Note: -------------------------------------
GJ denotes transmit operation.
® denotes receive operation.

....... 00'0<
c c
NOTCH control ® (page 22)
Used to attenuate interference caused
by heterodyne type signals. This con-
trol is not effective in reducing interfer-
ence caused
by SSB. FM, or AM type
signals.
SOL (squelch) control®-----,
Used to adjust squelch sensitivity.
Turning the
control clockwise deepens
the squelch.
' •"c·"*AFTu•• RF (RF gain) control®~----....,
, @, Used to control the gain of the high fre-
~ quency amplifiers. For normal opera-
i--'!..._---111------1 tions this control should be full clock-
wise, for the greatest receiver sensitiv-
ity.
AF (audio gain) control Rl)----,
Used to select the desired amount of
audio volume. Clockwise rotation in-
creases
the volume.
AT. T switch (f)--L-----~
Used to set the antenna tuner in tune
mode.
MIC (microphone gain) control (f)
Used for adjustment of microphone
gain. Turning
the control clockwise in-
creases the gain.
TRANSMISSION
• Connect themi~rophone .
• Turn on the power.
SSB SLOPE TUNE control@
(page 21)
Used to control the upper and lower li-
mits of the IF Bandwidth.
• The meter lamp lights and a frequency is shown on
the display.
Local
Operations
VOX control (f) (page 24) --~
GAIN: Used to adjust VOX amplifier
gain.
DELAY: Used
to adjust delay time.
ANTI: Used so that VOX is not ac-
tuated by the speaker.
TOP COVER SECTION
CAR FM MK;
'-E~YE'- ~GAIN SUB OISP MEMORY
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SCALE
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LCJ-1
CAL (maker) switch®, ___ ....~........,
When this switch is ON during receive,
the built-in oscillator generates a
marker
at 1 00 kHz intervals. This
switch is also used to zero-beat the
transceiver against WWV.
Press the PTT switch.
• For operation up to the 7 MHz band, place the MODE
switch to LSB. For operation on or above the 10 MHz
band. use the USB mode.
• Set the METER switch to ALC.
•
Tum the PWR control fully clockwise.
This transceiver is equipped
with an RF power control to
vary transmit power output. Turning the PWR control
counterclockwise reduces the
transmit power output. Use
of this control will help to reduce interference on the
bands.
• Press the miocrophone PTT switch or move the
standby
switch from RECto SEND.
• Speak into the microphone and adjust the MIC gain
control so that the meter deflection does not
exceed the ALC zone at voice peaks.
ALC zone
9

3-4. CW OPERATION
CW break-in selector
During CW operation, selects either
Full Break-in (FULL) or Semi Break-in
DJ
NAR/WIDE filter switch I.!Y---....,
Used to select either the normal IF filter
w~eoption~ffl•rinCW,FSKwAM. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ATT (RF attenuator) !'1:\Aoritr.,h----....,
Inserts 10, 20, or 30 dB of attenuation
into the receiver antenna circuit, to pro- 1--~~--'
teet the RF amplifier and mixer circuits
from distortion caused by excessive
input signal levels.
RECEPTION
[!] Turn on the power.
NB (noise blanker) switch/----.
control ®(page 22)
NB1: Used to reduce/eliminate short
duration pulse noise such
as an
auto ignition.
NB2: Use
to reduce/eliminate long dur-
ation pulse noise such
as the
"Russian Woodpecker".
~ The meter lamp lights and a frequency is shown on
the display.
@] Set the MODE to FM.
~ Select the desired band by operating the BAND/KEY
switch or with the 1 MHz step switch.
~ Adjust audio volume with the AF (audio gain) control.
~ Adjust the main tuning control so that the desired
signal can be clearly heard.
10
PWR (RF power) control <D--...,
Controls the transmit power in SSB,
CW and FM modes. Clockwise rotation
increases
power output.

AGC switch @(page 25) ----,
OFF- Used to disable the AGC. (Turns
OFF the S-Meterfunction).
NOTCH control @(page 22)
PITCH control ® (page 26)---,
Allows variation of the receiving tone
of CW to any desired pitch.
FAST- Normally used for CW and FSK.
SLOW- Normally used for SSB, AM
and FM.
Used
to attenuate interference caused
by heterodyne type signals. This con-
trol is not effective in reducing interfer-
ence caused
by SSB, FM, or AM type
signals.
AF TUNE control@(page 26)
.-----1 This control is used to accentuate or
peak the desired CW signal.
CW VBT control @(page 21)
Used to control the effective CW pass-
~---------1 bandwidth. Counterclockwise rotation
reduces the passbandwidth.
TRANSMISSION
II Using shielded line, connect a key or keyer to the CW
KEY jack on the rear panel.
Key plug connection Caution:
• Tum on the power.
When using an electric keyer, check
the polarity
of the key jack is
as shown .
• The meter lamp lights and a frequency is shown on
the display.
• Set
the MODE to CW.
• Set the METER switch to ALC.
• Tum the PWR control fully clockwise.
• Set the standby switch to SEND, if you are not using
Semi-Break in.
Ill Depress the key.
Note: --------------------------------
With the VOX switch ON, pressing the key down
permits transmission even with the standby switch
set to REC. This is called Semi-break-in operation.
(See page 23)
II Adjust the CAR LEVEL control on the top cover so
that the meter deflection is within the ALC zone.
ALCzone
II After transmission set the standby switch to REC.
Note: --------------------------------
The frequency display shows the transmit carrier
frequency.
11

3-5. AM OPERATION
ATT (RF attenuator) switch---.
Inserts 10, 20, or 30 dB of attenuation
into the receiver antenna circuit, to pro-
tect the RF amplifier and mixer circuits
from distortion caused
by excessive
input signal levels.
filter switch®---,
Used to select either the normal IF filter
ortheoptionalfi~erinC~,FSKorAM. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
NB (noise blanker) switch/---,
control @(page 22)
NB1: Used to reduce/eliminate short
duration pulse noise such as
an
auto ignition.
NB2: Use
to reduce/eliminate long
duration pulse noise such as
the "Russian ~oodpecker".
RECEPTION
ITJ Turn on the power.
~ The meter lamp lights and afrequency is shown on
the display.
mSet the MODE switch to AM.
[iJ Select the desired band by operating the BAND/KEY
switch or with the 1 MHz step switch.
12
(microphone gain) control
Used for adjustment of microphone
gain. Turning the control clockwise
increases the gain.
[]] Adjust audio volume with the AF (audio gain) control.
[§"] Adjust the main tuning control so that the desired sig-
.nal can be clearly heard.
Note: --~~~--~~--~~--~~~~~~~
If you are receiving a weak DX station or are experiencing
some interference,
try setting the NAR/WIDE switch to
NAR. This reduces the bandwidth and may help reduce or
eliminate the interference.

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NOTCH control @(page 22) CAR LEVEL control (f) ------,
Used to adjust the carrier level.
Used to attenuate interference caused
by heterodyne type signals. This con-
trol is not effective in reducing interfe-
rence caused by SSB, FM,
or AM type
signals.
SQL (squelch) control® ----,
Used to adjust squelch sensitivity.
..---------1 Turning the control clockwise deepens
the squelch.
L PITCH
-@)-AF TUNE
RF (RF gain) control® ----...,
Used to control the gain of the high fre-
CAR FM MIC
LEVEL GAIN
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STEP
TRANSMISSION
Ill Connect a microphone.
• Turn on the power.
Ill The meter lamp lights and a
frequency is
shown on the display.
• Set
the MODE to AM.
tions this control should be full clock-
wise, for the greatest receiver sensitivi-
ty.
AF (audio gain) control® ---
Used to select the desired amount of
audio volume. Clockwise rotation in-
creases the volume.
- VOX CONTROLS-
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SCALE
IMHz 100kHz
LCJ-'
II Adjust the CAR LEVEL control on the top cover for
50W.
• Place the METER switch to ALC.
• Speak
into the microphone and adjust the MIC gain
control so the meter deflection becomes minimum
at voice peaks.
• Place the METER switch to POWER.
• Press the miocrophone PTT
switch or move the
standby
switch from RECto SEND.
Note: -------------------
If the protection circuit is activated due to poor antenna
VSWR. turning the RF PWR control to the maximum, may
not provide a 1OOW meter reading. Therefore check the
antenna VSWR.
If it is poor, correct before transmitting
again.
13

3-6. FM OPERATION
TOP COVER SECTION
)
CAR M MICl------f---1
LEaVEL GAIN UB OISP. MEMORY
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FM MIC GAIN (microphone gain)
control (j)
Used to adjust microphone amplifier
gain.
RECEPTION
[] Turn on the power.
ATT (RF attenuator) switch
Inserts 10, 20, or 30 dB of attenuation t---------,
into the receiver antenna circuit, to pro-
tect the RF amplifier and mixer circuits
from distortion caused by excessive
input signal levels.
MONI (monitor) switch ®----1--~11--~::!A,
Allows monitoring of your transmitting
signal.
PWR (RF power) control G)---,
Controls the transmit power in SSB,
CW and FM modes. Clockwise rotation 1---------------'
increases power output.
(l] The meter lamp lights and a frequency is shown on
the display.
@] Set the MODE to CW.
[!] Select the desired band by operating the BAND/KEY
switch or with the 1 MHz step switch.
~ Adjust audio volume with the AF (audio gain) control.
[§] Adjust the main tuning control so that the desired sig-
nal may be clearly heard.
14
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NOTCH
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F"UNCTION
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SQL (squelch) control ® ----.
Used to adjust squelch sensitivity.
Turning the control clockwise deepens
,..-------------------------1 the squelch.
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II
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TRANSMISSION
• Connect the microphone.
• Tum on the power.
• The meter lamp lights up.
• Set the MODE to FM.
• Tum the PWR control fully clockwise.
• Press
the microphone PTT switch or place the
standby
switch to SEND.
•
Adjust the PWR control so that the meter deflection
is within the ALC zone.
RF (RF gain) control ® -----.
Used to control the gain of the high fre-
quency amplifiers. For normal opera-
tions this control should be full clock-
wise. for the greatest receiver sensitivi-
ty.
AF (audio gain) control® ----,
Used to select the desired amount of
audio volume. Clockwise rotation in-
creases
the volume.
Local Operation
Press the PTT
switch.
This transceiver is equipped with an RF power control to
vary transmit power output. Turning the PWR control
counterclockwise reduces the
transmit power output.
15

3-7. FSK (RTTY) OPERATION
MONI (monitor) switch (j) --~
Allows monitoring of your transmitting
signal.
TOP COVER SECTION
D
CAR FM MIC
ATT (RF attenuator) switch---.
LE~VEL ~GAIN SUB OtSP MEMORY
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Inserts 10, 20, or 30 dB of attenuation 1------11- ....... "--'"" ............... --t
- VOX CONTROLS- CAL
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D
CAL (marker) switch® ---1........,
When this switch is ON during receive,
the built-in oscillator generates a
marker
at 1 00 KHz intervals. This
switch is also used to zero-beat the
transceiver against
WWV.
RECEPTION
into the receiver antenna circuit, to pro-
tect the RF amplifier and mixer circuits
from distortion caused
by excessive in-
put signal levels.
PROC switch/control
¢ page24
OUT: Controls the output level.
ITJ Connect the RTTY terminal to the RTTY jack.
~ Turn on the power.
~ The meter lamp lights and a frequency is shown on
the display.
[!) Set the MODE to FSK.
[§.] Select the desired band by operating the BAND/KEY
(1 - 0)
switch or with the 1 MHz step switch.
[§.] Adjust the AF (audio gain) control.
[1] Adjust the main tuning control so that the desired
signal is correctly demodulated.
16
PWR (RF power) control CD ---.
Controls the transmit power in SSB,
CW and FM modes. Clockwise rotation
increases
power output.