Kenwood TS-600 User manual

YKENWOOD
6m
ALL
MODE
TRANSCEIVER
Model
TS-600
OPERATING MANUAL
CONTENTS
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2-1. Accessories
2-2. Operating Location
2-3. Power Supply Connection
2-4. Microphone
2-5. MIC Hook
SECTION
3.
OPERATING
CONTROLS
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5
3-1. Front Panel Controls
3-2. Rear Panel Controls
SECTION
4.
_
OPERATING
INSTRUCTIONS
................0005
8
41. Reception
4-2. Transmission
4-3. Frequency Calibration
4-4. Reading the Frequencies
4-5. Operating with Fixed Channels
4-6. How to Use RIT
4-7. Mobile Operation with External DC Power Supply
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TS-600 SPECIFICATIONS i
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SPECIFICATIONS
TRANSMIT/RECEIVE FREQUENCY RANGE........ 50 ~ 54 MHz
MODE fir ay. fed ty cate Vin are state ep alte areata she ess SSB, FM, CW, AM
RP OUTPUT 45... Fo divers Sk Sayeletys etc e Meets cleoic 10 watts for SSB, CW and FM
5 watts for AM
ANTENNA IMPEDANCE ...........2 ccc eeeeee 502 (unbalanced)
CARRIER SUPPRESSION ........2220-0e eee Better than 40 dB
SIDE-BAND SUPPRESSION ..................-05 Better than 40 dB
SPURIOUS RADIATION ...............2220005 Less than — 60 dB
MAX. FREQUENCY DEVIATION (FM)............ + 5 kHz
MODULATION ..caifs fend i te wesiee cee usa hee Balanced modulation for SSB
Variable reactance frequency shift for FM
Low power modulation for AM
MIGROPHONE |. 536.5 5150.50, 055.6.0:0rerngetis ed eanens Dynamic microphone, 5002
AUDIO FREQUENCY RESPONSE .............. 400 ~ 2600 Hz, within —9 dB
POWER CONSUMPTION ..........-- 0 eee ee ccee Transmit mode: 95W (AC 120/220),
4A (DC 13.8V), max.
Receive mode (no signal): 45W (AC 120/220V),
0.8A (DC 13.8V)
POWER REQUIREMENTS ...............-54-.- AC 120/220V, 50/60 Hz
DC 12V ~ 16V (13.8V as reference)
DIMENSIONS oc:45. 30: Gag) bs Saved bgru-os, somata deans 278(W) x 124(H) x 325(D) mm
WEIGHT, ¢ 2% sii asnewitateot ake elt aire mantel ae 11 kg
RECEIVING SVSTEM | 6:6. orice other aula SSB, CW: Single-superheterodyne
AM, FM: Double-superheterodyne
INTERMEDIATE FREQUENCY ................ SSB, CW, ... 10.7 MHz
FM, AM: ist IF... 10.7 MHz
2nd IF: ...455 kHz
RECEIVING SENSITIVITY ...........--- 0 eee SSB, CW: S/N = 10 GB or better at 0.25,.V
FM: S/N = 30 GB or better at 1nV
20 dB noise quieting = Less than 0.4uV
AM: S/N = 10 GB or better at 0.5uV
IMAGE RATIO‘ § is: a teneeis flee Racletinctans Better than 70 dB
PPiREJECTION 6 hotacs eons soca rae oo, naieetan Better than 70 dB
PASS-BAND WIDTH .......... 00 cece eee eee SSB, CW: More than 2.4 kHz at —6 dB
AM: More than 4 kHz at —6dB
FM: More than 12 kHz at —6 dB
RECEIVER SELECTIVITY ................2.45- SSB, CW: Less than 4.8 kHz at —60 dB
AM: Less than 12 kHz at —40 dB
FM: Less than 32 kHz at —60 dB
SQUELCH SENSITIVITY. « o5.4.4:% eiece es pe cuendiendtiae’s 0.25uV
AUDIQOUTPUT” ian SP i0 8 ieee 229s eo Getke More than 2.5W at 42 load (10% distortion)
RECEIVER LOAD IMPEDANCE ................ 82
FREQUENCYSTABILITY ......00c0000808 0058 Within + 2 kHz during one hour after one minute
of warm-up, and within 150 Hz during any 30
minute period thereafter.
The above, specifications are subject to change without notice for improvement.
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SECTION
1.TS-600
FEATURES
111 UDALL CHEE
. The Model TS-600 is a fully solid-state, all-mode
amateur band transceiver designed to provide high
quality communications on SSB, FM, AM and CW
bands.
. Bascially engineered for fixed station operation but is
also used for mobile station operation because of the
employment of AC/DC two-way power system.
. The single and doubleconversion type transceiver in-
corporates its own built-in VFO that continuously
covers the frequency range of 50.00 to 54.00MHz in
4 bands.
mechanism
facilitates tuning: MAIN TUNING knob (inner) for
closer tuning covers a change of 25kHz by one com-
plete rotation, and QUICK TUNING knob (outer)
covers a change of 100kHz similarly. You can tune in
quickly with pin-point accuracy. This feature is very
useful in receiving SSB signals.
. The main dial is graduated at 1kHz intervals and
provides accurate readings up to 100kHz, while the
sub-dial is graduated at 50 and 100kHz intervals for
reading frequencies up to 1MHz per rotation.
. A total of 20 fixed channels (5 channels for each
band) for all-mode operation. All the necessary crystal
oscillator elements are available as optional acces-
sories. Each of working channels can be visually
checked by the KENWOOD’s unique channel indicator.
. A noise blanker (NB) circuit of the type normally
found in many other HF products of our make is in-
cluded to eliminate pulse noise such as ignition noise.
. For improved FM-mode operation, a squelch circuit
combined with a noise detector circuit and Schmidt
circuit is added to the FM unit.
. A tuner which uses a voltage variable capacitor is
built in the receiver RF stage to minimize cross-talk
and spurious interference, and a high “Q” tuning
circuit in the antenna input stage for excellent
selectivity.
Speaker output is free from distortion because of the
use of amplification type AGC circuit. Signals trans-
mitted are accompanied by little or no splutter and
free from distortion thanks to the adoption of ALC
circuit. The AGC circuit comprises such time-constant
element that this constant is ‘‘slow” in SSB mode but
“fast” in FM, AM or CW mode.
ats
12.
13.
14.
15.
16.
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The built-in marker signal circuit enables you to
calibrate the tuning dial precisely at 100kHz intervals.
By setting the CALIBRATE switch to ON’ the re-
ceiver RF input circuit is disabled, thus permitting
frequency calibration without being disturbed by
external signals.
The unique “’S’” meter provides accurate reading
without causing ‘‘scale-out’” even when unusually
strong FM signal comes in. By manipulating the center
meter switch, this meter functions as a center meter
(tuning meter) for pin-point tuning of FM stations.
The built-in RIT circuit is very useful during recep-
tion, particularly in SSB and CW modes. It is designed
to be used for both VFO and fixed channel operations.
The transceiver operates on AC 120/220V or on DC
13.8V. It includes DC voltage multiplier of our own
development, contributing much to the space-saving
design of the model.
Significant improvements are embodied in the panel
design for making this transceiver much easier to con-
trol and use. Dials and knobs are of more advanced
type in visual and functional senses. Meter illumina-
tion and pilot lighting are included assuming night-
time use of the transceiver.
Visual aspects are taken as an important criterion in
the designing of this transceiver. Mechanical features
too have been treated similary, with particular em-
phasis on their reliability.
For assuring easier access to the internals, the
transceiver enclosure or case is in two parts, complete
with special mechanical details to allow the front-con-
trol panel to be detached. The final unit is also ar-
ranged so that it can be removed from the rear panel.
VOX operation is also ‘available. The transceiver has
provision for connection of VOX-3 obtained from
KENWOOD as optional accessory.

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: SECTION 2. INSTALLATION
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2-1. ACCESSORIES
The Model TS-600 transceiver is supplied with the
following accessories. After unpacking, check the acces-
sories against the list:
Operating manual
RCA plug connector
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Microphone with hook, 500 ohm ........ 1
AC power cord with connector ..........- 1
DC power cord with connector .......... 1
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2-2. OPERATING LOCATION
As with any solid-state electronic equipment, the
place of use must be discriminated with the TS-600, in
order to avoid subjecting to extremes of ambient condi-
tions.
A well-ventilated, dry place, where the transceiver will
not be exposed to direct sunlight, should be selected. The
TS-600 has a heat sink in its rear panel; be sure to install
the transceiver so that there is a proper clearance at the rear
and bottom. For better heat dissipation, keep it away from
a wall. This precaution also applies when the transceiver is
operated on the companion’s seat in a car.
: When you wish to use the transceiver in a car, you
may put it on the seat but sure to secure some heat dis-
sipating clearance under and behind it and to make proper
provisions for protecting it against shocks.
2-3. POWER SUPPLY CONNECTION
The TS-600 is designed to operated on AC 120/220V
or DC 13.8V. Switching between AC and DC is accomplish-
ed by replacing the power cord. The DC power cord is color
coded (red for ‘’+”’ and black for ““—’’). When connecting
power cord, be sure to observe the following points:
1. Turn off the power switch and set the standby switch
REC position.
2. When replacing power cord, disconnect it from the
AC socket (or battery). Care should be used to
prevent electrical shocks when connecting the AC
power cord.
Each power cord is equipped with a 4-P plug complete with
a stopper. When inserting the plug to the transceiver, be
sure to press down the stopper with your finger and
engage it into the latch on the transceiver side.
To pull the cord off the transceiver, push down the
stopper to disengage it from the latch and the give a pull
to the cord end. (See Fig. 1)
2-4. MICROPHONE
The microphone supplied with this transceiver is a
500-ohm impedance one designed specially for radio equip-
ment of this class. Any other microphone may be used
provided that its type and characteristic are suited to the
transceiver. The optimum impedance of a microphone is
anywhere between 500 and 600 ohms. For connection of
microphone, refer to Fig. 2.
Seen from the cord
Microphone
Fig. 2 Microphone connector Wiring
2-5. MIC HOOK
Attach a microphone hook to the case following the
instructions give in Fig. 3. The hook is furnished with the
equipment.
HOLE OF _
MIC HOOK CASE
SCREW () I
SCREWS
Fig. 3. Mounting of Microphone Hook

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3. OPERATING CONTROLS
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@ KENWOOD 6m ALL MODE TRANSCEIVER
POWER SEND CEN NB_ RIT CAL
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3-1. FRONT PANEL CONTROLS
@ METER
This meter has three functions. During reception, it serves
as an ‘’S’’ meter indicating the strength of received signal on
“a
scale
graduated
from
1
to
9,
9
+
20dB
and
9
+
40aB.
During
transmission,
the
meter
indicates
the
strength
of
RF
output signal.
The meter also functions as a center meter (Tuning meter)
during FM reception when the METER switch is set to the
CEN position.
@) POWER SWITCH
The power to the transceiver is turned on by flipping the
power switch to the up position, and turned off at the down
position.
@® STANDBY SWITCH
This is a 2-position switch the SEND position is for
transmission and the REC position for reception. With the
switch in the REC position, the transceiver automatically
shifts from receiving mode to transmitting mode if the
microphone PTT switch is set to ON. Do ‘not leave the
transceiver in transmitting mode when the transmitting
circuit is out of adjustment, as it may result in damage to
the transceiver.
@ METER SWITCH
By manipulating this switch during FM reception, the meter
functions as an ‘‘S’’ meter or a center meter. In other
receiving modes, the meter functions as ““S’’ meter regard-
less of the position of the switch.
© NB (noise blanker) Switch
Turning on this switch will suppress pulse type noises due
LSB 1 —USB
°
® ® 8®
to ignition systems of nearby cars. Noiseless audio output
can be obtained even when receiving signals are weak.
© MICROPHONE JACK
For connection of microphone. This jack has terminals for
both microphone input and PTT circuit.
@ PHONES JACK
For connection of headphone with impedance of 8 to 16
ohms. Plugging the headphone will shut off the speaker.
RIT SWITCH
For on-off control of the RIT (receiver incremental tuning)
circuit.
@ MODE SWITCH
By using this switch, any of the following five modes can
be selected:
CW (sending key):
Morse-code telegraphic communications (A1)
FM (frequency modulation):
Communications with FM waves (F3)
USB (upper side band):
Communications with “upper side band’ waves. For
operation in 50 MHz 6-meter band, the international
practice calls for the use of USB (A3J).
LSB (lower side band):
Communications with “lower side band” waves (A3J).
AM (amplitude modulation):
Communications with “upper side band’’ waves. For
operation in 50 MHz 6-meter band, the international
wow-like audio output.

@ ON AIR INDICATOR
This
lamp
keeps
lighting
while
the
transceiver
is
in
trans-
mitting mode.
@ RIT INDICATOR
This
lamp
remains
on
to
indicate
that
the
RIT
circuit
is
Operating.
@ DIAL GAUGE
This
is
used
as
a
reference
for
reading
frequencies
on
the
main
dial.
® CAL INDICATOR
This
light
emitting
diode
is
illuminated
when
the
CAL
switch is turned on.
@ SuB-DIAL
The
dial
scale
is
graduated
from
O
to
1000,
covering
a
width
of
1
MHz.
Each
graduated
interval
is
50
kHz.
The
scale
disc
rotates
in
the
same
direction
as
the
MAIN
TUN-
ING
knob
and
COARSE
TUNING
knob
are
turned.
The
rotation
ratio
of
two
knobs
is
such
that
the
whole
0-1000
range
is
covered
when
the
MAIN
knob
is
rotated
40
times
or
when
the
COARSE
knob.
is
rotated
10
times.
@ CAL SWITCH
This switch allows the receive frequencies to be calibrated
at
intervals
of
100
kHz
when
the
tranceiver
is
in
receive
mode.
NOTE: The tranceiver stops operating when the CAL
switch is ON.
@® MAIN DIAL
This dial scale is graduated at 1 kHz intervals.
(2 MAIN TUNING KNOB (inner)
For setting the transceiver to the desired operating fre-
quency. One rotation of this knob changes the frequency by
25 kHz.
(@® COARSE TUNING KNOB
Another
name
of
this
knob
is
the
‘‘fast-change”
tuning
knob.
The
gear
ratio
in
the
mechanical
link
between
this
knob
and
VFO
is
so
small
that
you
can
quickly
locate
your
desired
frequency.
One
rotation
of
the
knob
corresponds
to
a
change
of
100
kHz.
@ P. DOWN INDICATOR
This
light
emitting
diode
is
illuminated
when
the
RF
POWER
knob
is
turned
counterclockwise
from
its
fully
clockwise
position.
@) CHANNEL INDICATOR
This lamp indicator comes on when VFO or a fixed channel
oscillator is in operation. During fixed channel operation,
this indicator instantly tells whether your desired channel is
loaded with a crystal oscillator element.
@) RF POWER KNOB
Turning this knob counterclockwise can reduce the RF
output power down to 1W or below. With the knob at the
fully clockwise end (RF POWER switch turned on), it is
at the rated value. The meter cannot show the real RF
output power because its deflection changes depending on
the antenna condition. In the normal operating condition,
however, you can know of approximate powers. Assuming
the RF meter read division “’8’’ for the rated value, the
division “5” is around 5W and “1.5” around 1W.
Note that in SSB the RF POWER knob should be always
at the fully clockwise end where the P. DOWN indicator
goes off. Otherwise, the ALC voltage could be too low,
causing distorted power output.
@) AM CAR KNOB
In AM mode, optimum output can be obtained by adjusting
the know. (Max. 5W)
@) FIX CH SWITCH
For selecting VFO and fixed channels. There are 5 fixed
channels in each band (a total of 20 channels in 4 bands).
@ BAND SWITCH
For selecting the frequency band at which the transceiver is
to be operated. Four selective bands, 1MHz wide, are
provided for all amateur bands in the range from 50MHz
to 54MHz.
@) BAND INDICATOR
Indicates the frequency band of 50, 51, 52, 53MHz at
which the transceiver is operated.
@ AF GAIN KNOB (INNER)
This adjusts the gain of the receiving audio amplifier. A
clockwise turn of the knob will increase the audio output.
@ RF GAIN KNOB (OUTER)
For adjusting the gain of the-RF amplifier in the receiver
section. With this control turned to extreme clockwise
position, the gain is maximized, and vice versa. The “S”
meter indicates the gain set by this control. If the pointer of
the “’S’”’ Meter is at ‘’9’’, then radio waves of lower than ‘’9”
level will be attenuated. This feature emphasizes the
wanted signal and suppresses the unwanted signal to
produce a clear output. The RF gain can be directly read on
the “’S’’ meter.
@ DRIVE KNOB
For turning the RF driver and MIX input coil for best recep-
tion and the output circuit of the HET mixer for best trans-
mission. This control adjusts the electronic turning circuit
designed for simultaneous tuning in transmit-receive opera-
tion. This knob provides a broad curve for peak tuning.
Note when the VFO indicator is at ‘500’, the DRIVE
knob is to be set to the center, or in the twelve o'clock
direction. Turn it right or left for tuning according as the
VFO frequency is higher or lower than ‘500’.
@ RIT KNOB
This knob is used to fine adjust the receiving frequency
when the RIT circuit is ON.
It adjusts the receive frequency without changing the

FCC Data: Receiver Model No.
TS-600. Receiver is certified to
meet FCC Part 15 as of date of
manufacture.
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3-2. REAR PANEL CONTROLS
@ ANT TERMINAL
For connection of antenna.
@ NAME PLATE
TS-600 serial number is marked on this plate.
@) HEAT SINK (FOR TRANSMITTER FINAL STAGE)
For protection of transistors from overheating.
@ RL-MAKE TERMINAL (RELAY TERMINAL)
This terminal should be OFF during reception, and should
be grounded during transmission.
@® KEY JACK
This jack is used for operating the transceiver in CW mode.
Connect an external telegraphic key device.
© ALC-INPUT TERMINAL
External ALC terminal.
@ EXT SP TERMINAL
For connection of an external speaker.
120V /2A acizoy/230V a aoe
220V /1A
POWER CORD JACK
For
connection
of
the
supplied
AC
power
cord
(or
DC
power cord).
@ AC FUSE HOLDER
For
AC
power
fuse
(primary).
(120V-+2A
or
220V->1A)
@ VOX SOCKET
For connection of a voice control unit. When VOX unit is
not connected, be sure to insert the 9-pin MT plug into
the socket.
Failure
to
observe
this
precaution
will
cause
the
standby
relay
to
be
inoperative
and
thus
the
transceiver
cannot
be
set
in
the
transmitting
mode,
also,
the
RF
input
circuit
can-
not
be
turned
off
at
the
ON
position
of
the
CAL
switch.
@), AC POWER SELECT SWITCH
Set this switch to your local AC voltage, 120V or 220V.
Note:
Always
disconnected
power
supply
before
setting
the
switch.

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41. RECEPTION
After connecting the power cord, antenna, micro-
phone, key device, etc., set controls and knobs by follow-
ing Table 1.
First, turn the POWER switch to ON. The pilot lamps
in the meter, sub-dial pointer, band switch and FIX CH
switch will all light up, indicating that the transceiver is
ready for operation. Because of solid-state design, the
transceiver can be put into operation immediately after the
POWER switch is ON.
Next, adjust the controls and knobs according to
TABLE 2.
Table 1. Front Panel
POWER Switch .... OFF
Standby Switch .... REC
METER Switch ....S
NB Switch ........ OFF
RIT Switch ...... OFF
CALEY a a5 itso oaeeiaee OFF
MODE Switch...... CW, FM, USB, LSB, or AM
DRIVE Knob...... Center position
BIT KRODS Sora i0 8 0)
SQUELCH Knob... . Fully counterclockwise
RF GAIN Knob ... . Fully clockwise
AF GAIN Knob .... Fully counterclockwise
BAND Switch...... Desired receiving band
FIX CH Switch ....VFO
The foregoing techniques are common to all modes
of operation. Each mode, however, calls for special tech-
niques of its own. Such special techniques will be dis-
cussed for each of the five modes.
CW Mode (How to use RIT)
With RIT switch turned off, position MAIN DIAL in
such a way that the incoming CW signal will beat at 900
Hz. Under this condition, you can ‘’zero in’’ your operating
frequency to the frequency of incoming CW signal.
Similary, if the other party calls back with 900 Hz
beat tone in response to your call signal, it means that the
transceiver of the other party is in ‘’zero in’’ status. Should
the other party call back with a beat tone off 900 Hz or
should you want to communicate with a beat frequency of
your choice, turn on RIT switch and adjust RIT knob to
obtain the desired beat.
SECTION 4.OPERATING
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INSTRUCTIONS
Table 2
Controls and Knobs Adjustment and Setting
AF GAIN * Turn clockwise for suitable
volume
MODE (CW, * Set at the desired mode.
FM,
USB,
LSB,
AM)
MAIN TUNING * Turn slowly and set for
Knob | clearest signal
DRIVE (use band * Adjust for maximum sensi-
marks as tivity.
easy guide.)
AF GAIN * Normally, this knob is set at
the extreme clockwise posi-
tion. When the signal is very
strong, turn it counterclock-
wise for suitable gain.
SQUELCH * This is used for FM mode of
operation. Turn the knob
clockwise so that noise at no-
signal time disappears. This
knob is normally set at a posi-
tion where noise just dis-
appears.
RIT * With the RIT switch ON, turn
the knob in either direction
and only the receive fre-
quency will be varied.
Refer to paragraph “‘How to
Use RIT”.
FM Mode
Set the MAIN dial for optimum reception. By setting
the METER switch to the CEN position, the meter func-
tions as a center meter (center freauency indicated). Turn
the MAIN dial so that the center meter indicates “0” while
receiving the other party’s signal. In this way, the transmit
frequency will coincide with the receive frequency.
Next, set the METER switch to the S position and the
meter will indicate the strength of the incoming signal. If, in
this case, the meter pointer fluctuates in response to the
sound in the speaker, turn the MAIN dial a little (a few kHz)
in either direction until the meter indication is stabilized
(meter is stabilized if no fading exists).
Since the TS-600 is so designed that the IF circuit for
SSB forms a part of the ‘“’S’”’ meter indication circuit for
FM, the ‘’S” provides logarithmic indications for FM waves

and is free from saturation even when the input signal
strength is very high, thus eliminating the need for calibra-
tion for each mode of operation.
Since the IF band is wide in FM mode, a slight devia-
tion of frequency does not affect the reception. In transmit-
ting operation, however, the other party could be using a
fixed channel. Because of this possibility, it is advisable that
you “zero in’’ your frequency to that of the other party by
properly setting the MAIN dial in the manner that the
center meter pointer may deflect up to the center space.
If the “S’ meter continues to fluctuate or if satis-
factory audio output is not available, if is very likely that
the other party is sending the message on SSB. You can
easily check this by turning the MODE switch to USB or
LSB position.
SSB Mode
Of the single sideband mode, USB is traditionally
more often used than LSB. As far as the operating tech-
nique is concerned, there is no difference between two.
Generally, the “zero in’’ technique in SSB mode re-
quires a little experience.
A. Discrimination between SSB and FM
(1) Use of “’S’’ Meter
If the ‘‘S’’ meter indication is steady (meter pointer almost
stops), the incoming signal is FM; otherwise, it is SSB.
(2) Use of MODE Switch
lf a clear signal is heard at the FM position of the MODE
switch, the signal is FM. The sound in SSB mode is not
heard at this position of the switch.
(3) Use of Beat Noise
In FM mode, a beat noise will be heard between the words
of signals being received. In SSB mode, no beat noise is
heard.
Note: !n the case of AM waves, a beat noise will be heard
during non-modulation time even in SSB mode.
B. Dial Setting
When the receiving signal is found to be SSB by the
above method A, in USB first set the MAIN dial a few kHz
below the receiving frequency (turn the dial 2 or 3 divisions
counterclockwise). You will hear a high pitch sound such as
is heard from a magnetic recording tape set in the fast-
forward mode. Turn the dial clockwise for higher frequency
and the sound will become clearer. Set the dial at the posi-
tion where the sound is heard most clearly (this is the ““zero
in” point).
Note: 1 The “zero in” point can be easily located because
the sound loses its clarity suddenly when the dial
Passes away from the “’zero in” point.
If a clear sound cannot be heard even by following the
above procedure, it may be an indication that the signal is
LSB. Set the MODE switch to LSB position. In this case,
the method of setting the MAIN dial should be performed
in reverse order.
Note: 1. If the frequency of the other party is deviated after
the “zero in” point has been obtained, set the RIT
switch to ON and adjust the RIT knob.
2. When the RIT feature is used, the receiving fre-
quency will be deviated from the transmitting fre-
quency. Therefore, the RIT knob must be set to
“O" or the RIT switch to OFF before you start to
transmit again.
AM Mode
AM waves cannot be demodulated in FM mode; also,
they will be heard as a continuous beat noise in SSB mode.
Optimum reception of AM signal is secured by turning the
transceiver in such a way as to maximize the deflection of
the “‘S’ meter pointer. Since the bandwidth of the receiver
crystal filter is somewhat narrow because this filter is
primarily for SSB reception, the sound output of the
speaker may have its high pitch components suppressed.
This can be remedied by shifting the receive frequency
a little by using the RIT knob. The same effect can be
produced by means of the MAIN dial but the use of this
dial for that purpose is not recommendable because, should
you do so, you will not be able to “zero in’ your
transmit frequency to the frequency of the other party.
Where your transceiver and that of the other party
are both TS-600, it should be noted that, in AM mode, the
transmit carrier frequency is 10.7006 MHz which is lower
than the receive carrier frequency by 600 Hz.
Accordingly, you first ‘‘zero in’’ your frequency to
that of the other party by adjusting your MAIN dial and
send out the signal, to which the other party will respond
after possibly changing his frequency. If he should do so,
the pointer of your ‘’S” meter then would deflect down
from the initial maximum level indication; this drop must
not be interpreted as a sign of trouble. In such a case, you
are expected to re-match your frequency to the new incom-
ing frequency by using your RIT knob with the RIT switch
set to ON (refer to Fig. 4 on page 10.)
4-2. TRANSMISSION
Before transmitting, perform all the necessary pro-
cedures for optimum reception. Make sure that the radio
waves you have selected does not interfere with other radio
stations.
Adjust the controls and knobs (DRIVE knob, micro-
phone VR, etc.) for transmission of good quality signals.
Connect a 50-ohm dummy load or antenna to the trans-
ceiver before starting to adjust the various controls. The
use of dummy load is recommended because this prevents

the emission of disturbing signals. Use the dummy load,
which is sized to dissipate about 20 watts of transmitter
power. The tuning procedure should be completed within
the least time possible from the viewpoint of the life of the
transceiver. Set the controls and knobs as shown in Table
3 below.
Table 3. Initial settings of control on front panel
Standby Switch .... REC
RIT Switch ...... OFF
MODE Switch...... Cw
RF POWER Knob .. . Fully clockwise
RF GAIN Knob ... . Fully clockwise
DRIVE Knob...... Center position
RIE Knob. 39 ee {0}
AF GAIN Knob ... . Set for proper volume on
reception
SQUELCH Knob... . Set for optimum squelch effect
BAND Switch...... 50
FIX CH Switch .... VFO
kaos
CW Mode
Turn BAND switch to your desired frequency (50 ~
54 MHz). After turning MODE switch to CW position, shift
STANDBY switch from REC to SEND position just to
make sure that the meter pointer deflects and ON AIR lamp
lights up, and then move back this switch to REC position.
Under this condition, move STANDBY switch to
SEND side and rotate DRIVE knob for maximum deflection
TX.f —= Transmit frequency
RX.f— Receive frequency
TX RX.
Party's station E4 7o0 Hz
TX.f RX
Your station | i
TX.f RX.f
Party’s station
After “zero in” of the party's station
TX. RXF
s
Your station H | |
i. SESE
Adjust receive frequency only with RIT knob.
Fig. 4
10
of the meter pointer deflection further. Repeat this manner
a few times.
The foregoing procedure should be carried out rapidly,
without unnecessary long delay at each step. If the tele-
graphic key device has already been connected to the
transceiver during adjustments, the device should be set in
the “key-down” condition. Having adjusted the transceiver
as above, you are now ready to use the key for CW com-
munication.
CW transmissions are automatically monitored
through the speaker of the transceiver. The audio gain of
the sidetone can be adjusted with the knob when the top lid
of the transceiver case is removed. (See Fig. 6.)
Other Modes
When the transceiver is properly adjusted for opera-
tion in CW mode, it is ready for use in other modes (FM,
LSB, USB and AM). Connect the microphone and speak
after shifting the STANDBY switch to SEND position.
Your voice will now be transmitted.
Microphone gain adjustment for FM and SSB (USB,
LSB) can be made by the gain adjusters which become
accessible when the top lid of the transceiver case is remov-
ed. The optimum setting position of these adjusters is about
the midway position of their turning range (see Fig. 6). The
microphone gain should preferably be reduced as small as
possible to assure good quality of transmission.
PTT (push-to-talk) Operation
By connecting the supplied microphone or any other
microphone equipped with PTT switch, the transceiver is
readily used for PTT operation. For communication, depress
PTT switch with STANDBY switch left in the REC position.
43. FREQUENCY CALIBRATION (Fig. 7)
To read correct frequencies, the MAIN dial must be
calibrated previously by using the 100 kHz marker unit
built in the transceiver. The marker unit is operative when
the CAL switch is set to ON. During the operation of the
marker unit, the higher harmonics can be received over the
entire band exactly at 100 kHz intervals. In this instance,
the RF input circuit (relay) is deenergized and, therefore,
external waves are scarcely received.
Frequency Calibration for USB
By rotating MAIN TUNING knob clockwise the beat
tone of the marker unit changes from high to low pitch and
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