OPERATION
AND
MAINTENANCE
SWAN
MODEL
1200-W
EL
E C
TRONICS
O
ceanside,
A
Subsidiary
California
of
Cubic
Corporation
-----------SPECIFICATIONS-----------
POWER RATING
1200 Watts
Input on
5 FREQUENCY RANGES
I)
3,000- 4,500 kc
2)
6,000- 9,000 kc
3)
ll,000-16,000kc
CW
PEP
Input in SSB Mode. 800 Watts DC
.
4) 16,000-23,000 kc
5)
23,000-35,000 kc
USES
FOUR
6LQ6
TUBES,
Cathode-Drive Circuit.
DRIVE
REQUIREMENT
100-125 Watts
METER
Reads Relative
Output
Grounded Grid, Super-
and
Cathode
Current
Includes Transmit-Receive Relay Control for simple
operation with a Transceiver.
Pi
Wide range
Output
coax cable or variety
DIMENSIONS
13"
wide X 5-3/4" high X 10-3/4" deep.
WEIGHT
Circuit matches
of
other load impedances.
52
or
75
ohm
23lbs.
POWER
Computer
ing
SUPPLY
at
1200
grade electrolytic capacitors,
VDC
rating.
55
mfd. filter-
Silicon Rectifiers.
AC Input:
117
volts, 50-60 cycles, 400 watts average
input with voice modulation.
230 volt, 50-60 cycle model available on special order.
FIG
. 1 - 1
200-W
AMPLIFIER,
TOP
VIEW
FIG
. 2 -
1200-W
AMPLIFIER,
BOTTOM
VIEW
INSTALLATION
CAUT.ION
Never remoye the cabinet or bottom plate when
is
power line voltage
age
is
used
in
for
minute
amplifier
capacitors to discharge after turning the
off
and pulling the plug.
GENERAL
(a) Refer to the pictorial
installation. Connect a short length
(RG-58 or RG-8) from the transceiver or exciter to
the coaxial input
connector is required
cable. This cable should be as sh0rt as practical and
preferably not more than 5 feet long.
(b) Connect the relay control cable to the auxiliary relay
jack
on the Swan 270. When using the 1200-W with
other Swan transceivers it will be necessary to perform the following steps:
Q)
Remove
RCA
type phono
ceiver.
chassis.
connected. Highly lethal volt-
this amplifier.
jack
on the 1200-W. A PL-259 type
bottom
jack
Be
sure to insulate the jack from the
Allow
in
Fig. 3 when making the
at
the amplifier end
of
transceiver
on the back
at least one
of
coaxial cable
and
of
the trans-
of
the
install
.
(c)
Connect the antenna coax, or dummy load to the
output
reduce TV I, connect it between the output
the antenna .
(d) For transceivers
the 1200-W schematic for the necessary changes
the relay circuit. Locate the terminal strip with the
black and red wires from the control cable. They are
located
must be reversed.
TUNING
(I)
Turn the 1200-W on. The red light indicates
power
be
pass" position. Tune the exciter
Exciter
amplifier by the internal relay, and will go to whatever
Metering" control will indicate exciter output, and
may be used conveniently as a tuning meter. Simply
adjust
using whatever tuning procedure is prescribed for the
particular exciter. Then switch the exciter back to
standby or receive position.
jack. If
at
a low pass filter
or
exciters other than Swan, refer to
the rear
of
is
to be installed to
the amplifier. These two wires
INSTRUCTIONS
is
on and the filaments
of
the 6LQ6 tubes will
lit. Turn the 1200-W function switch to the "By-
or
transceiver first.
output
antenna
the
will be
or
exciter
load
control
shunted
is
connected
s for
around
the
. The
maximum
jack
and
that
linear
"Output
output,
in
@Locate
+
conductor
G)
Connect another wire from the other side
12
volt side
Relay
of
Kl
and connect a wire from the
of
the relay coil to the center
the phono
jack.
relay coil to the common side
jack
.
@By-pass
.0 I
@Install
jack
both terminals
mf
disc capacitors. (TVI suppression)
of
the phono
phono plug from 1200-W into phono
on transceiver for relay control
amplifier.
MCK
Of
1200-W
IN
OUT
FIG. 3 REAR
VIEW-
of
the phono
jack
TYPICAL
of
the
with
of
the
LO-PASS
FILTER
0
Turn
the 1200-W function switch to the
position.
position and the P.A. Load to 9 o'clock. Turn the
Mic. Gain down on the exciter (transceiver) and
sure the carrier has been balanced out. Then switch
the exciter to normal voice-transmit position. With
Swan transceivers this
to-talk button.
erly connected and functioning, the 1200-W
transmit mode. The 6LQ6 tubes will now
"idling current"
"Output
the off position you will read cathode current. ·
ANT.
TV
INSTALLATION
"Tune"
Set
the
bandswitch
is
If
the relay control circuitry
of
about
to
the
proper
band
done by pressing the push-
is
prop-
is
now
be
drawing
100
rna.
By
turning the
Metering" control fully counterclockwise to
BACk
Of
RG-58
CONTROL
USING
SWAN
SWAN
270
CABLE
COAX
TO
ANTENNA
270
be
in
3
@Switch
position .
than
that
watts
by inserting
than
adjust
put
position.
P .
changed
cathode
on
nate
until
Then,
higher
This
and
The
vary co,nsiderably with different
as with frequency .
approximately
100
cathode
the exciter to its
(If
an
exciter
the
Swan
270
or
the
drive be
output.
switching
P.A.
, as indicated by the
Then
A.
Tune
slightly when switched
circuit.)
the 1200-W for increased
between adjusting
the
highest possible
advance
and
last
tuning
efficiency.
output
watts
of
current
kept
With
the
approximately
to
the
Tune
on the 1200-W for
go
back
for
maximum
Next
the P.A.
adjust
reading
P.A.
adjustment
is a relative indication,
The
500-600
drive.
will
of
"Tune" or
or
transceiver with
260 is used, it is
down
Swan
500
250
"Tune"
meter
to
the exciter
output.
advance
output,
P.A.
output
Load
control
Tune
will provide best linearity
Cathode
MA.
This
With
more
course
read
full
recommended
to
approximately
or
350 this is
MA
of
position).
maximum
in
"Output
and
(It
into
the P.A.
and
Tune
and
indication
about I number
for
maximum
antenna
Current
reading
driving power the
higher.
CW
power
more
drive
100
done
carrier
the amplifier
rather
Quickly
out-
Metering"
adjust
may
have
Load
control
then alter-
P.A.
Load
is
reached.
output.
and
will
loads as well
should
is
based on
read
its
instrument
driver
itoring
the
Heath
Heath
tion
book
to
connect
interpret
also be used.
lished by the
Bill
Orr,
contain
cilloscopes
These publications
purpose
this
@To
G)
operate
"Bypass"
passed
the transceiver-driver will
ever, the
allow
CW
watts, the function switch
position.
switch in the
will
and
amplifier
during
Co.
around
instant
Operation:
operation. An
model
of
Benton
supplied with this
and
the screen
The
ARRL,
published by
detailed
for
.
without
position.
the amplifier by the
6LQ6
operation
For
full power
SSBjCW
permit
transmitter
filaments in the 1200-W
optimum
, as well
SB-6\0
Harbor,
use
the
instrument, and
patterns.
Radio
Amateur
and
Editors
information
are
recommended
the 1200-W, simply switch
The
antenna
operate
of
the amplifier.
for
operation
may
operation,
position.
tuning
as
continuous
excellent oscilloscope
sold in kit form by the
Michigan.
kit
explains in detail
Other
oscilloscopes
's
Handbook,
the
Radio
and
Engineers
on
the
tuning
and
circuit is
internal
"Barefoot."
at
approximately
be left in
place the function
of
both the
mon-
The
instruc-
how
how
to
may
pub-
Handbook
use
operation.
references for
remain
the
"TUNE"
of
then
relay
How-
by
both
os-
it
by-
and
lit
500
is
to
to
CAUTION
Do
not
position
keep the exciter
for
longer than 30 seconds at a time . This
or
transceiver
caution note concerns the exciter more than the
I200-
W,
but since the 6LQ6 power amplifier tubes
are operating at
should
always be
required, switch to standby
back to tune
tuning procedures, it will be
is
more
than enough time.
@
SSB
Voice
tuning
CW"
Cathode
the transceiver
control
procedures, now switch the 1200-W
position,
Current.
for a
I) Exercise great care
control. It
full
input during tune, the time
kept
short.
for
30 seconds. With experience
Operation.
or
peak
and
Apply
driver,
reading
CAUTION:
Having
the
output
SSB
and
of
in
is
quite easy to produce higher meJer
If
longer
for
a minute, and then
found
that 30 seconds
followed the preceding
metering
voice
excitation
advance
300-400 rna.
setting
its Mic.
the
readings, butflattopping and distortion will result.
2) Do not switch the exciter into
when the 1200-W
is
in
"SSB-CW"
"Tune"
position. Only
voice modulated excitation should be applied
position.
Q)
Monitoring
recommended
plete
monitoring. transmitter
for
and
amateur
tuning with
piece
of
radio
station
an
test
equipment
is
output
oscillo~
an
~c
oscilloscope suitable
and linearity. This
in
tune
time
is
in
to
"SSB-
control
Mic
to
from
Gain
Gain
position
in
this
ope.
A highly
for the
com-
MAINTENANCE
There
will be little
amplifier .
service
Deterioration
change in idling
current,
problems which
the tubes
and
grid circuit,
required.
Other
and well within
capacitors
meaning
and
tancy
silicon diodes used in the supply
and
The
hours
or both. However, except for occasional field
may
year
after
components
in
that
quality
are
control
of
these filters
not
likely
maintenance
6LQ6
when
operated
of a tube
current
may
occur with
be expected to
year
with no problems. In the
matching
the
they have a
of
are
nominal
power
than
to
ever fail or
tubes will provide
according to instructions.
will generally be indicated by a
or
inability to
operate
the
6LQ6
also
operating
ratings.
supply
much
conventional types. Life expec-
is
approximately
DIAL SETTING
A
PLATE
4.5
7.5
DIAL
WHEN
50
OHM
5
6
7
SETTINGS
COUPLED
BAND
80
40
20
15
10
TYPICAL
1200-W
required in the 1200-W
thousands
draw
normal
any
electronic device,
month
tubes is
The
are
higher degree
are
wear
not
conservatively,
electrolytic filter
computer
\0
hermetically sealed
out.
after
month
grounded
normally
grade,
of
years.
plate
purity
The
LOAD
3
2.5
4
3
4
ON
TO
LOAD
of
4
INPUT
0
0
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SCHEMA
TIC DIAGRAM - S
WAN CYG
NET LINE
AR
AMP
LIFIER - M
ODEL
® 5- 12-
1200- H
70
WARRANTY POLICY
Swan Electronics Corporation warrants this equipment
again
st
defects in material or workmanship, except
tubes, transistors.
period
Tubes. transistors. and diodes are covered under the
warranty policy
valid
mailed to the
Do
This warranty
the defective parts. and
been tampered
of
only
not
ship to the
one
if
and
diodes. under normal service
year
from
date
of
for
a period
the enclosed card
factory
within ten days
factory
is
limited
with, misused or damaged.
of90
days . This warranty
is
properly fiJled
without prior authorization.
to
repairing or replacing
is
not valid
original
of
date
of
if
the equipment has
for
for
purchase.
in
and
purchase.
only
is
a
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