Kenwood TS-511S User manual

KENWOOD
TS-511S
OPERATING
MANUAL
The
Kenwood
TS-511S
is
a
powerful,
five
band
transceiver
for
operation
on
SSB
and
CW.
It
features
built-in
VOX,
crystal
calibrator,
noise
blanker,
incremental
tuning
and
1
kHz
frequency
readout.
High
stability
is
obtained
by
the
use
of
a
well
designed
heterodyne
VFO.
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CONTENTS
SPECIFICATIONS
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SECTION
1.
INSTALLATION
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SECTION
2.
CONTROLS
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SECTION
3.
OPERATING
INSTRUCTIONS
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8
SECTION
4.
CIRCUIT
DESCRIPTION
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SECTION
5.
ALIGNMENT
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SECTION
6.
TROUBLE
SHOOTING
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KENWOOD TS-511S SPECIFICATIONS
FREQUENCY RANGE: 80 meter band — 3.5~ 4.1 MHz
. 40 meter band — 7.0 ~ 7.6 MHz
20 meter band — 14.0 ~ 14.6 MHz
15 meter band — 21.0 ~ 21.6 MHz
10 meter band — 28.0 ~ 28.6 MHz
28.5 ~ 29.1 MHz
More than 4.8 kHz (at —60 dB)
CW More than 0.5 kHz (at—6 dB) *
More than 1.5 kHz (at —60 dB) *
* With optional CW filter.
AF OUTPUT: More than 1 watt (10% distortion)
i 29.1 ~ 29.7 MHz '
MODES:
LSB,
USB,
CW
:
INPUT POWER: 500 watts PEP, 300 watts CW i
ANTENNA IMPEDANCE: 50~752 |
SIDEBAND SUPPRESSION: Better than 40 dB
CARRIER SUPPRESSION: Better than 40 dB
HARMONIC RADIATION: -40 dB i
IMAGE RATIO: More than 50 dB i
IF INTERFERENCE: More than 50 dB i
2
ee FREQUENCY 400 ~ 2600 Hz (—6 dB)
sensrriiry Boe liter ry aE
FREQUENCY STABILITY: Less than 100 Hz frequency drift per 30 minutes after warmup. . I
SELECTIVITY: SSB More than 2.4 kHz (at —6 dB) i
i
RECEIVER OUTPUT IMPEDANCE: _ 8 2 (speaker and headphones)
. Maximum consumption with PS-511S AC power supply is 550
POWER CONSUMPTION: watts for transmit and 150 watts for receive.
TUBES AND SOLID STATE 10 tubes
COMPONENTS: TIC
4 FETs
37 transistors
57 diodes
SIZE: 13" wide x 7-9/32" high x 13-5/8" deep
WEIGHT: 22 Ibs.
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SECTION 1.
1.1 UNPACKING
Carefully unpack the TS-511S and check that the following
accessories are included.
Microphone plug interconnecting power cable*
Fan cable US plug
Plastic feet 10 amp. fuses*
Test rod * Included in the PS-511S
1.2 LOCATION
Select a proper operating location. It should be dry and
free from direct sunlight. There should be at least 3 inches
clearance between any objects and the rear of the trans-
ceiver to allow adequate air flow for cooling.
1.3 CONNECTIONS
Connect the ground lug of the TS-511S to a suitable
ground. (See Fig. 1)
Connect the interconnecting fan and power cable between
the transceiver and the AC power supply. (See Fig. 1)
TS-511S PS-511S
GROUND
CABLE yp
FAN CABLE
Fig. 1 TS-511S-Power Supply Connections
INSTALLATION
UUIUURAUE
IC
AC PLUG a
CAUTION:
Before operating the transceiver, make sure the AF
GAIN knob is set to POWER OFF and that the
stand-by switch is set to REC. If this is not done,
damage may occur when the power is applied. (See
Fig. 2)
Connect
a
suitable
antenna
to
the
ANT
jack
on
the
transceiver
(See
Fig.
3).
An
antenna
is considered
suitable
when
it
presents
a
50
~
75
ohm
load
to
the
transceiver,
The
performance
and
efficiency
of
the
TS-511S
is
directly
related
to
the
type
of
antenna
that
is chosen.
For
further
information
on
antennas,
the
ARRL
Antenna
Handbook
is
recommended.
Connect a high impedance microphone to the transceiver
with the microphone plug that is supplied. (See Fig. 4)
Insert the AC plug into a 117 V AC receptacle.
Hy} PS-511S
©) (©) FLAC PLUG
Set AF GAIN to POWER OFF. ACII7V
stand-by switch to REC. insert 50. 60Hz
the AC plug into a receptacle
Fig. 2 Initial Switch Settings

SECTION 2. CONTROLS
2.1 FRONT PANEL CONTROLS
Meter (1 on Fig. 5)
The meter monitors five different functions. In the receive
mode it acts as an S-meter. In the transmit mode it
monitors ALC (Automatic Level Control),- IP (plate
current), RF (relative power output), or HV (high voltage).
METER Switch (2 on Fig. 5)
The meter switch determines what the meter will read in
the transmit mode. It switches to either the ALC, IP, RF,
or HV.
AGC/CAL Switch (3 on Fig. 5)
AGC: Two different AGC time constants may be selected.
Slow AGC is a long time constant and fast AGC isa
short time constant.
These positions select a 25 kHz crystal calibrator
marker. The VFO position is used for calibrating
the matching remote VFO.
CAL:
MIC Microphone Connector (4 on Fig. 5)
A four prong connector is used so that PTT operation is
possible with a suitable microphone.
GROUND
CABLE
{
COAXIAL CABLE
Fig. 3 Antenna Connections
es 482 (feet)
f= Frequency (MHz)
PHONES Headphone Jack (5 on Fig. 5)
This jack allows operation with 8 ohm headphones. When
the headphones are plugged in the speaker is disconnected.
Main Tuning Knob (6 on Fig. 5)
The main tuning knob operates the main tuning dial.
Vernier Scale (7 on Fig. 5)
The vernier scale is calibrated in 25 kHz divisions and its
range is 0 ~ 600 kHz.
Dial Reference Lines (8 on Fig. 5)
These reference lines make accurate frequency readout
possible in all three modes of operation.
MODE Switch (9 on Fig. 5)
This switch selects either USB, LSB or CW.
AF GAIN, NB PULL ON, POWER OFF Switch
(10 on Fig. 5)
POWER OFF — With the switch in this position the
transceiver is turned off. Turn the set on by turning the
switch clockwise. 3
AF GAIN — The volume of the received signal increases
MIC CORD
As seen from the cord
Fin A AAG

when the knob is turned in a clockwise direction.
NB
PULL
ON
—
The
noise
blanker
is
activated
by
pulling
‘the
knob
out.
‘RIT Receiver Incremental Tuning Control (11 on Fig. 5)
[This
control
allows
the
operator
to
move
the
receive
(frequency
+2kHz.
This
control
does
not
move
the
‘transmit
frequency.
:
3
‘Main Dial Skirt (12 on Fig. 5)
The
dial
skirt
is
calibrated
in
1kHz
divisions,
and
one
jenoaitiad
of
the
dial
skirt
covers
100
kHz.
PLATE/LOAD
Plate
Tuning/Load
Adjastment
.(13 on Fig. 5)
jThe
dark
knob
controls
the
plate
tuning.
The
larger
silver
ting
is
used
to
adjust
the
loading.
\DRIVE Driver Tuning Control (14 on Fig. 5)
| This controls the driver stage tuning.
;BAND Switch (15 on Fig. 5)
This switch selects the desired frequency range.
VOX/REC/SEND
Stand-By
Switch
(16
on
Fig.
5)
When
this
switch
is
set
to
VOX,
the
TS-511S
will
respond
either
to
VOX
or
PTT
operation.
With
the
switch
in
the
REC
position
the
transceiver
will
only
receive
and
with
the
switch
in
the
SEND
position
the
transceiver
is
locked
into
transmit.
RF GAIN/RIT PULL ON (17 on Fig. 5)
When
the
knob
is
advanced
in
a
clockwise
direction
the
RF
gain
increases.
When
the
knob
is
pushed
in,
the
RIT
control
is
disabled.
When
this
occurs,
the
transmit
and
receive
frequencies
are
the
same.
2.2 REAR PANEL CONTROLS
REC ANT Receive Antenna Jack (18 on Fig. 6)
This
jack
is
used
when
the
receive
and
transmit
antennas
are
separate.
If
this
is
the
case,
the
receive
antenna
should
be
connected
to
the
REC
ANT
jack.
Cooling Fan (19 on Fig. 6)
This
fan
provides
an
air
flow
to
cool
the
RF
amplifier
section.
GND Ground Lug (20 on Fig. 6)
The
ground
lug
should
be
connected
to
an
adequate
graund.
RF
VOLT
RF
Voltmeter
Sensitivity
Control
(21
on
Fig.
6)
This
control
adjusts
the
sensitivity
of
the
RF
output
meter.
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TS-511S
Front
Panel
Controls

BIAS Adjustment (22 on Fig. 6)
This
controls
the
bias
voltage
of
thie
6LOQ6
amplifier
tubes.
When
the
contro!
is
turned
clockwise,
the
idling
plate
current
will
increase.
FAN Socket (23 on Fig. 6)
This socket should be connected to the PS-511S with the
interconnecting cable. It provides the necessary voltage
117V needed to power the fan.
ANT Antenna Jack (24 on Fig. 6)
This socket should be connected to an antenna that
presents a 50 ~ 75 ohm load. The jack is for the transmit-
ting antenna if two antennas are used.
ANT SW Antenna Switch (25 on Fig. 6)
Set this switch to COMMON when a single antenna is used
for both transmitting and receiving, Set this switch to REC
(receive) when two separate antennas are used (one for
transmitting and one for receiving).
REMOTE Remote Control Socket (26 on Fig. 6)
This socket permits various connections to a linear ampli-
fier. The relay circuits are accessible through this socket.
(See Section 3)
KEY Jack (27 on Fig. 6)
This is a two connector jack used to control CW operation.
SG SW Screen Grid On-Off Switch (28 on Fig. 6)
This switch is set to the OFF position when the operator
wishes to remove screen grid voltage from the 6LO6 tubes
®@ ® @ @
®
for tuning and neutralization purposes. It is set to the ON
position for normal operation.
POWER Connector (29 on Fig. 6)
Use the interconnecting power cable to connect the
PS-511S
AC
power
supply
to
the
connector
on
the
TS-511S.
VFO
OUT
VFO
Power
Outlet
(30
on
Fig.
6)
This socket powers the matching remote VFO. If the
remote VFO is not used there is a jumpered plug in the
socket at all times. .
2.3 INTERNAL CONTROLS
DELAY (31 on Fig. 7)
This controls the VOX relay hold-in time.
ANTI-VOX (32 on Fig. 7)
This contro! allows the operator to adjust the anti-trip level
of the VOX.
VOX SENSITIVITY (33 on Fig. 7)
This control varies the. sensitivity of the VOX unit. These
settings will vary with each individual operator and
microphone.
MICROPHONE GAIN (34 on Fig. 7)
This controls the amount of microphone gain.
@8@@®
REC ANT
rec [com
ANT Sw
Bias Rey
REMO
TE VFO OUT
@®
Fig.6 TS-511S Rear Panel Controls
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Fig. 7
TS-511S Internal Controls

SECTION 3.
OPERATING INSTRUCTIONS
3.1 RECEIVING
Place the transceiver’s control in the following typical
settings for receive operation. The 7 MHz band is used here
as an example.
AF GAIN Power OFF, noise blanker OFF
Stand-By Switch REC
BAND 7 MHz
PLATE 7
LOAD Fully counterclockwise
DRIVE Centered
RIT Centered
RF GAIN Fully clockwise
RIT Switch Push in
METER SWITCH IP
AGC/CAL SLOW
MODE LSB
ANT SW (rear panel) COM
SG SW (rear panel) ON
Check the rear panel and make sure the VFO plug (See
Fig. 8) is inserted. If the plug is not inserted, the internal
VFO will not function on receive or transmit.
Turn the power on by advancing the AF GAIN knob ina
clockwise direction. The meter and dial pilot lights are
activated when power is applied. Allow about 40 seconds
for initial warm-up. Advance the AF GAIN knob for a
suitable audio level.
Adjust the DRIVE knob for maximum receiver sensitivity.
3.2 CALIBRATION
LSB
Turn the MODE switch to LSB. Set the AGC/CAL switch
to 25 kHz. A calibrator marker tone will now be heard
every 25kHz. Turn the main tuning knob until the
calibrator marker is heard. Tune the calibrator note until it
is perfectly zero-beat (almost inaudible}. Hold the main
knob and slide the zero mark of the dial skirt to the LSB
reference line on the plastic window.
USB
Turn the MODE switch to USB. Set the AGC/CAL switch
to 25 kHz. A calibrator marker tone will now be heard
every 25kHz. Turn the main tuning knob until the
calibrator marker is heard. Tune the calibrator note until it
is perfectly zero-beat (almost inaudible). Hold the main
knob and slide the zero mark of the dial skirt to the USB
reference line on the plastic window.
CW
in case of operating with CW filter, turn the MODE switch
to CW. Set the AGC/CAL switch to 25 kHz. A calibrator
marker tone will now be heard every 25 kHz. Tune the
calibrator note for maximum S-meter reading. When this is
accomplished the calibrator tone will be approximately
700 Hz. Next, slide the zero mark of the dial skirt to the
center CW reference line on the plastic window. When
using without CW filter, the operations the same as LSB.
And then, turn the main dial skirt clockwise by 700 Hz
while holding the main tuning knob.
FREQUENCY READOUT
The frequency is easily read by adding 1+ 2+3.
1. Bandswitch Frequency (3.5 ~ 29.1 MHz)
2. Vernier Scale Frequency (0 ~ 600 kHz)
3. Dial Skirt Frequency (0 ~ 100 kHz)
This
frequency
readout
method
is
only
accurate
when
the
RIT
control
is
OFF
or
exactly
centered
on
0
kHz.
NOISE BLANKER
The
noise
blanker
is
especially
useful
and
effective
for
impulse
type
noise.
9PMT SHORTING PLUG
Fig.8 VFO Plug Connections

3.3. TRANSMITTER TUNING
CAUTION:
Do not exceed 450 ~ 475 ma. IP during CW
transmission. Keep tune-up periods as short as possi-
ble. Tube life is directly related to the duration of
tune-up periods. Make sure the fan is operating at all
times or the life of the 6LQ6 output tubes will be
noticeably shortened.
Place the transceiver’s controls in the following typical
settings for transmit operation. The 7 MHz band is used
here as an example.
Stand-By Switch REC
AF GAIN Power ON
BAND 7 MHz
PLATE A
LOAD Fully counterclockwise
DRIVE Centered
RIT Centered
RIT Switch Push in
RF GAIN Fully clockwise
METER Switch IP
AGC/CAL SLOW
MODE LSB
ANT SW (rear panel) COM
SG SW (rear panel) ON
Before initial tune-up it is suggested that the operator
familiarize himself with the controls and their functions.
The use of a 50 ohm dummy load antenna is also suggested
to minimize interference to other amateur stations.
Turn the main tuning knob to the desired operating
frequency. Set the stand-by switch to SEND. The meter
should read 40 ma. idling current. If the meter does not
read 40 ma., adjust the rear panel BIAS control (See
Fig. 9) for a meter reading of 40 ma. Return the stand-by
switch to REC.
Turn the MODE switch to the CW position. Set the stand-
by switch to SEND. Quickly adjust the PLATE control for
a minimum meter reading. Set the stand-by switch to REC
and wait a few seconds.
Set the stand-by switch to SEND and adjust the DRIVE
control for maximum meter reading. Set the stand-by
switch back to REC.
7
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it
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Plate
Current
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Rear
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Fig.9 Bias Voltage Adjustment Diagram

10
Turn
the
METER
switch
to
RF.
Set
the
stand-by
switch
to
SEND
and
adjust
the
plate
and
load
controls
for
maximum
meter
reading
(maximum
output).
Set
the
stand-by
switch
back
to
REC.
If
there
is
not
sufficient
meter
reading
when
tuning
for
maximum
output,
adjust
the
RF
meter
adjust-
ment
(See
Fig.
10)
for
a
2/3
scale
reading
at
maximum
output.
Turn
the
MODE
switch
to
LSB.
Turn
the
METER
switch
to
ALC.
Connect
a
suitable
microphone
to
the
MIC
connector.
Set
the
stand-by
switch
to
SEND.
While
talking
in
a
normal
voice
adjust
the
microphone
gain
so
that
the
meter
reads
within
the
ALC
range.
3.4 VOX OPERATION
Set the stand-by switch to VOX. While talking in a normal
voice slowly adjust the VOX SENSITIVITY control until
the
transmitter
is
voice
actuated.
Next,
adjust
the
DELAY
control for the desired hold-in time. Normally one second
is considered to be a comfortable hold-in time. Next, turn
the receive audio up to a suitable level and adjust the
ANTI-VOX
control
until
the
receive
audio
does
not
activate
the transmitter. The VOX unit is now properly adjusted.
3.5 PTT OPERATION
Set the stand-by switch to REC. Connect a suitable PTT
microphone
to
the
MIC
connector.
Simply
press
the
PTT
switch to transmit and release to receive.
3.6 CW OPERATION
For
manual
CW
operation
follow
the
instructions
in
the
first
six
paragraphs
of
Section
3.3.
Insert
a
key
into
the
KEY
jack
on
the
rear
panel.
Turn
the
MODE
switch
to
CW.
For
manual
CW
operation,
set
the
stand-by
switch
to
SEND.
Do
not
hold
the
key
down
for
more
than
10
seconds
at
maximum
output.
To
receive,
set
the
stand-by
switch
to
REC.
3.7. SEMI BREAK-IN CW OPERATION
For
semi
break-in
CW
operation
follow
the
instructions
in
the
first
six
paragraphs
of
Section
3.3.
Insert
a
key
into
the
KEY
jack
on
the
rear
panel.
Turn
the
MODE
switch
to
CW.
Set
the
stand-by
switch
to
VOX.
Senda
string
of
dots
and
adjust
the
VOX
SENSITIVITY
control
until
the
transmitter
is
activated
by
the
key.
Next,
adjust
the
DELAY
control
for
the
desired
hold-in
time.
The
VOX
should
drop
out
between
words
for
proficient
operation.
For
CW
operation
it is
not
necessary
to
adjust
the
ANTI-VOX
control.
3.8
OPERATION
WITH
A
LINEAR
AMPLIFIER
The
TS-511S
transceiver
is
readily
compatible
with
most
linear
amplifiers.
It
has
extra
relay
contacts
for
amplifiers
which
require
external
switching
control.
These
accessory
contacts
are
accessible
through
the
REMOTE
socket
on
the
rear
panel.
The
following
relay
contacts
may
be
used
in
accord
with
the
individual
requirements
of
the
chosen
amplifier.
NOTE:
Since
most
linear
amplifiers
normally
require
about
100
watts
of
drive
for
CW
operation,
the
output
of
the
TS-511S
may
be
reduced
accordingly
by
the
following
steps.
Follow
the
previous
tune-up
procedures
for
CW
operation using a dummy load.
When
the
transceiver
is
tuned,
the
output
may
be
reduced
by
slowly
turning
the
DRIVE
knob
in a
counterclockwise
direction
until
the
correct
amount
of
drive
is
obtained.
Normally
the
DRIVE
knob
will
have
to
be
moved
only
17
or
2
increments
on
the
DRIVE
scale
to
reduce
the
output
by
100
to
200
watts.
When
SSB
operation
is
desired,
the
DRIVE
knob
must
be
returned
to
its
original
position
for
maximum
drive.
REMOTE
Pin
5
is
normally
open
in
respect
to
ground.
In
the
receive
condition
the
relay
contacts
are
open.
In
the
transmit
state
the
relay
contacts
are
closed
and
shorted
to
ground.
Pin
4
is
connected
to
ground.
Pin
3
is
normally
closed
in
respect
to
ground.
In
the
receive
condition
the
relay
contacts
are
closed.
In
the
transmit
state
the
relay
contacts
are
open.
NOTE:
The
use
of
LSB
or
USB
is
dependent
upon
the
chosen
band.
The
following
combinations
are
customary:
3.5~ 4.0 MHZ LSB
7.0~ 7.3. MHz LSB
14.0~ 14.350 MHz USB
21.0 ~ 21.450 MHz * USB
28.0~ 29.7 MHz USB
2 |
3

SECTION 4.
4.1 BLOCK DIAGRAM .
The block diagram of the TS-511S transceiver is shown in
Fig. 11. The transceiver is a hybrid type using 10 tubes, 1
IC, 41 transistors, and 57 diodes. Construction techniques
feature fabricated printed circuit boards to simplify repair
work and trouble shooting. The receiver employs a crystal
controlled double superheterodyne configuration. The
transmitter employs a dual conversion configuration using a
filter type SSB generator. .
4.2 CARRIER OSCILLATOR
The carrier oscillator is a 2 transistor solid state circuit. In
transmit it acts as a carrier oscillator and in receive it acts as
the BFO.
4.3 SSB GENERATOR
This
circuit
consists
of
a
single
stage
FET
amplifier
and
a
2
transistor
audio
amplifier.
It
uses
a
diode
modulator
and
a
single stage buffer. The DSB signal generated by this circuit
is fed to the crystal filter where an SSB signal is obtained.
METER ff
7
CIRCUIT
DESCRIPTION
During
CW
operation,
carrier
is
produced
by
unbalancing
the
diode
modulator
with
a
DC
voltage.
4.4 IF SECTION
In
transmit,
the
SSB
signal
is
obtained
by
feeding
the
DSB
signal
through
a
crystal
filter.
It
is
then
amplified
and
fed
to
the
VFO
mixer.
The
output
of
the
VFO
mixer
is
fed
through
a
bandpass
filter
and
then
coupled
to
the
driver.
4.5 DRIVER
During
transmit,
the
IF
signal
is
converted
by
the
hetero-
dyne
mixer.
The
converted
signal
is
amplified
by
a
single
stage
amplifier
and
is
fed
to
the
final
amplifier.
During
receive,
the
driver
coils
operate
as
antenna
coils.
.
4.6 FINAL AMPLIFIER
This
is
the
power
amplifier.
The
signal
from
the
driver
is
fed
to
the
6LQ6
power
output
tubes
where
the
final
RF
output
is
obtained.
fi ct a oe eee es Ses, oa tole ter SS I ee
Fig.
10
RF
meter
Adjustment
Diagram
11

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12

SECTION 5. ALIGNMENT
CAUTION:
Some circuits in the TS-511S carry high voltage
and
extreme
care
must
be
exercised
to
avoid
electrical shock.
5.1. REMOVING THE CASE
TOP COVER
Remove the single phillips screw between the two black
plungers. Next, pull the black plungers upward. The cover
can be removed by raising it slightly and pulling forward.
BOTTOM PLATE
Remove the nine phillips screws in the bottom plate. The
four hyzex legs need not be removed.
5.2 ALIGNMENT POSITION
During alignment the transceiver should rest on its side (See
Fig. 12). This position provides adequate ventilation and
convenient access to most parts of the transceiver.
5.3 RECEIVER SECTION
13 Fig. 12 Transceiver Position During Adjustment
RF COIL ALIGNMENT
Set
the
AGC/CAL
switch
to
25
kHz
and
use
the
calibrator
marker
as
the
test
signal.
Set the
DRIVE
knob
to
the
12
o’clock
position.
Set
the
other
knobs
to
their
normal
receive
positions.
Adjust
the
MIX
and
DRIVE
coils
(See
Fig.
13)
with
the
accessory
tool
for
maximum
S-meter
reading
at
the
receive
frequencies
given
below.
Adjustment
Order
Band
Frequency
1
3.5
3.75
MHZ
2
28.5
28.8
MHz
3
21
21.225
MHz
4
14
14.175
MHz
5
7
7.15
MHz
HETERODYNE CRYSTAL OSCILLATOR
Adjust
the
OSC
coil
(See
Fig.
13)
in
a
clockwise
direction
until
the
internal
background
noise
disappears.
Now
tum
the
core
one
turn
in
the
reverse
direction.
Oscillation
will
be
unstable
if
the
core
is set
too
close
to
the
critical
point
of
oscillation.
Adjust
ail
bands
in
the
following
order.
Adjustment Order Band Frequency
1 3.5 12.395 MHz
2 7 15.895 MHz
3 14 22.895 MHz
4 21 29.895 MHz
5 28 36.895 MHz
6 28.5° 37.395 MHz
7 29.1 37.995 MHz
IF SECTION (See Fig. 14)
The
large
IF
transformers
(T1
and
T2),
the
SSB
crystal
filter,
and
the
small
IF
transformers
require
no
adjustment.
Turn the AGC/CAL switch to 25 kHz on any desired band.
Set
the
other
knobs
to
their
normal
receive
positions.
Tune
the
calibrator
marker
signal
for
maximum
S-meter
reading.
Slowly
turn
the
cores
of
T3
and
T4
with
the
accessory
tool
and
adjust
for
maximum
S-meter
reading.
T4
is
a
dual-
tuned
IF
transformer
and
is
adjusted
at
the
top
and
bottom
of
the
chassis.
CARRIER OSCILLATOR (See Fig. 15)
Disconnect the antenna and set the other knobs to their
normal receive positions. Set the MODE switch to USB and
set the AGC/CAL switch to 25 kHz. Tune in the crystal
calibrator marker signal. Adjust the DRIVE knob for an
S-meter reading of 9. Next, turn the main tuning knob
clockwise for the S-meter reading of 2. At that point,
adjust trimmer TC2 to obtain a zero beat.
Set the MODE switch to LSB and adjust TC3 as above.
Set the MODE switch to CW. Then set the SG SW switch
on the rear panel to OFF. Set the stand-by switch to
SEND. Set the METER switch to ALC and adjust the

14
DRIVE knob for maximum meter reading. Next, adjust
TC1 for maximum meter reading.
Transmit
MODE Receive
USB 3.3965 MHz 3.3965 MHz
LSB 3.3935 MHz 3.3935 MHz
CW (without CW filter) 3.3935 MHz 3.3943 MHz
CW (with CW filter) 3.3943 MHz 3.3950 MHz
AUTOMATIC VOLTAGE REGULATOR (See Fig. 16)
Set all knobs to their normal receive positions. An accurate
DC voltmeter with a full scale of at least 10 volts is
required. Connect the + lead of the voltmeter to the
terminal located directly below VR2 at the top of the
automatic voltage regulator board. Connect the — lead to
the chassis and adjust VR1 for a voltmetér reading of 9
volts.
5.4 TRANSMITTER SECTION
CARRIER LEVEL AND CARRIER BALANCE
(See Fig. 17)
Set the rear panel SG SW switch to OFF. Turn the MODE
switch to CW. Turn the BAND switch to 14 and then set
the main tuning dial at 14.175 MHz. Set the METER.
switch at ALC and set the stand-by switch to SEND.
OSC COIL
UNIT
Ls°28)
La'21)
MIX COIL
UNIT
Fig. 13
Figures in‘
Adjust
the
carrier
fevel
control
until
the
voltage
reads
460
iia.
using
the
IP
scale
for
Teference.
Now
connect
a
dummy
load
to
the
ANT
terminal.
Set
the
SG
SW
switch
to
ON
and
quickly
adjust
the
PLATE
and
LOAD
controls
for
maximum
output.
Set
the
MODE
switch
to
LSB
and
adjust
the
RF
VOLT
control
on
the
rear
panel
for
full
sensitivity.
Set
the
MIC
GAIN
to
zero.
If
there
is
any
meter
reading,
the
circuit
is
not
properly
balanced.
To
balance
the
carrier,
alternately
adjust
CT1
and
VR2
on
the
SSB
generator
board
(See
Fig.
17)
for
minimum
meter
reading.
Then
turn
the
MODE
switch
to
USB
and
repeat
this
adjustment
so
that
the
same
amount:
of
carrier
suppression
is
obtained
on
both
LSB
and
USB.
NEUTRALIZATION OF THE FINAL POWER
AMPLIFIER
Connect a dummy load to the ANT terminal. Set the
BAND switch to 28.5 and set the main tuning dial to
28.8 MHz. Next tune the transceiver for maximum out-
put.
Now
set
the
SG
SW
switch
to
OFF
and
measure
the
output at the antenna terminals with a sensitive high
frequency voltmeter. Adjust the neutralizing capacitor TC1
(mounted on the side panel of the final amplifier shielding
box) for minimum output. Normally the shielding box
does not have to be removed for neutralization.
L3(14)
DRIVE COIL
UNIT
show the band.
Coil Location Diagram

V2 6CB6
T3 ¢
Bi 3 BPF *
oe 4 2\\y Ts ®
VRi S-Meter Zero Adj Tile
8 V3 6CB6 *
ai
V4 6BAG: LPF «
Ste
VR2 S-Meter Sensi Adj TT -
vi
6BAG
Crystal
Filter
(SSB)
@ THI0. ss
WRYSTAL FILTER
Tak Sista
Crystal Filter(CW)
(Optional)
-
*
Indicates
that
adjustment
of
these
coils
5
.
ee ; Fig. 14 IF Unit
demands a high degree of skill and the
coils should not be touched.
Q2
BA
Qi
TC3 Input
TCc2 Q2z
Tc1 n \ a
X3 3393.5KHz (LSB) ~ _ Qi 2SA606
x2 3396.5kHz (use) UPA BHR
eS Qs
X1 3395.0KHz (cw) 1 ESRF
cwT Mone sae S ag . :
r
Vis
.
fy
ee
maf
VRI
Voltage
Adj
cCWR
AE
:
Out
put
.
ouT
Sa
NESE
.
VR2
RIT
Zero
Adj
usB
LsB
Carrier input Rit
BM input
VR3 ‘ 3 -
Bee
~
VR2
TI
Balanced Mod(TX )
Balanced Det(RX)
Q3 eas 5 Pe 2
5 es " ce co é TI
Q2
VR! Carrier Level Adj
RF output
MIC input
Fig. 17 Generator Unit

SECTION 6.
TROUBLE SHOOTING
6.1 TRANSMIT
6.2
Symptom
No output in any mode.
-
No indication of any modulation.
RF output present but no meter
reading in the RF position.
VOX does not function
VOX is tripped by receive audio
from the speaker.
Fuse blows after about 10 seconds
of transmission.
RECEIVE
Pilot lights do not light and no re-
ceive audio is heard when power is
turned on.
No signals can be heard even
through the antenna is connected.
Frequency can not be changed with
the RIT control.
No siganls can be heard and the S-
meter reads full scale.
SSB signals sound garbled and un-
intelligible.
Cause
Voltage is not apptied to the screen
grid of the final stage.
* The external VFO plug is not in-
serted.
The microphone plug is wired incor-
rectly or improperly seated in the
MIC jack.
The MIC GAIN is set too low.
The RF meter adjustment is set too
low.
VOX SENSITIVITY control is set
too low.
The stand-by switch is set to REC
or SEND.
The ANTI-VOX control is improp-
erly set.
Final amplifier is detuned.
AC plug is not seated in the AC
receptacle.
Power table is not properly.
Fuse is blown.
ANT switch on the rear panel is set
to REC.
RIT circuit is off.
RF GAIN has been lowered.
The MODE switch is set to the
wrong sideband.
Corrective Action
Set the rear panel SG SW switch to
on.
Insert the plug.
Check the MIC plug wiring and
make sure the MIC plug is firmly
seated in the jack.
Turn the MIC GAIN control in a
clockwise direction.
Turn the RF control on the rear
panel in a clockwise direction.
Turn the VOX SENSITIVITY con-
- trol in a clockwise direction.
Set the stand-by switch to VOX.
Turn the ANTI-VOX control in a
clockwise direction.
Retune to obtain proper resonance.
Adjust the rear panel BIAS control
for 40 ma. of idling current.
Insert securely.
Insert securely.
Replace the fuse.
Set the ANT switch to COM.
Turn the RIT circuit on by pulling
the RF GAIN knob.
Turn the RF GAIN fully clockwise.
Turn the MODE switch. to the op-
posite sideband.
16

Pin No.
Voltage Measurements of Tubes and IC’s
vi
6LOQ6
v2
6LO6
vi
12GN7A
v2
6GK6
v3
6826
clon
4 8
v4
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>
v4
6BAG
SoloN|S
VFO
AVR
AF
ai
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NOTES:
Voltage values obtained with the VTVM having 11 MQ of input impedance.
T: Maximum transmitting condition (CW)
The value in (
R: Reception with no input
) denotes the AC voltage and others are DC voltages.
VOX voltage values measured with the stand-by switch at VOX position.
Voltage Measurements of Transistors
ransistor’s | Transistor’s ‘Teansise
T
Transistor Emitter Collector
or Source are Drain | or ia Ga
Transistor
ee
Transistor’s | Transistor’s | Transistor's
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18
Tio
IF
UNIT VR2
AF VRi
UNIT | vVRe
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VR9
VR7
VOX UNIT
VR3
Si
METER
Rui
PL
C2
Fig. 18 Chassis Top View
V36CB6 «FAN
Vil2GN7A
Va6 AWBA
VR AVR
VRe [ UNIT
VR2
C3

MODEL
TS-511S
SCHEMATIC
DIAGRAM
FINAL UNIT (X56-0004-05) _ v.27 606,
aszecaseis)
Bete
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02,31N60

RL
REMOTE
(FINAL.
UNIT)
KEY
JACK
VFO
CONTROL
VRs
*
UNIT
REMOTE
POWER
JACK
TRAP COIL
NB UNIT
IF UNIT
Ta
MARKER UNIT
TC
VR3
VR2
CT!
|
GENERATOR
CT2 UNIT
TI
VRi
VOX UNIT
RLI
Tc3s
Ti
TC2
TCi
MIC
JACK
Ne
Nee
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ey
BAND
SW
VR1
CARRIER
UNIT
S3
PHONE
JACK
20
Fig.
19
Chassis
Bottom
View