RANCER
Effectively
TVI
suppressed, and
completely
self-contained,
the
Viking
"Ranger"
transmitter/exciter
kit
is
designed
for
easy
assembly
by
either
novice
or
experienced
amateur.
A
phone
and
CW
transmitter
on
the
10
through
160
meter
amateur
bands, the
"Ranger"
may also
be
used
as
a
flexible
exciter
without
modification.
As
a transmitter, the
"Ranger"
is
a
rugged
and
compact
75
watt
CW
input
or
65
watt
phone
unit.
100%
AM
modulated,
the
"Ranger"
has a
pi-network
coupling
system
that
will
match antenna
loads
from
SO
to
SOO
ohms.
Covering
seven
amateur
bands,
160,80,40,20,
15,
11
and
10
meters-built-in
VFO
or
crystal
control
features
high
gain
audio
within
the
communications speech range.
As an
exciter,
the
"Ranger"
will
drive
any
of
the
popular
kilowatt
level
tubes and
will
provide
a high
quality
speech
driver
system
for
high
powered
modulators
. The
"Ranger's"
design permits basic
control
functions
for
the high
power
stage
to
be
handled
right
at
the
exciter-no
modification
or
internal
change
required
to
shift
from
transmitter
to
'
exciter
operation
with
all
connecting
leads
TVlfiltered
inside the
"Ranger"
cabinet.
TRANSMITTER
/
EXCITER
KIT
A nine pin
receptacle
on the
rear
of
the
transmitter
brings
out
TVI
filtered
control
and
audio
leads
for
exciter
operation.
This
receptacle
also
permits the
"Ranger"
to
be
used
as
a
filament and
plate
"power
source and also
as
a
modulator
for
operating
auxiliary
equipment
such
as
a VHF transmitter.
Available
at
the
output
receptacle
are
6.3 V
AC
at
5.5 Amp.,
500 V
DC
at
up
to
210
MA
and 300 V
DC
at
up
to
SO
MA
along
with
the full 33
watts
output
of
the
modulator.
BUILT-IN
VFO-
The built-in
VFO,
patterned
after
the famous
Johnson
Model
122,
is
extremely
stable.
Separate
calibrated
bandspread
dial
scales
for
each
of
the seven bands and a
new
6
to
1
planetary
dial
mechanism using a
2Ya"
diameter
knob result
in
exceptional
tuning
accuracy
with
velve
t smooth
control.
The 28.0
to
29.7
MC
calibration
alone
is
nine inches
long
and
14
.0
to
14.35
MC
covers
more
than
three
inches on
the
dial.
For permanent accuracy, di
al
pointer
is
connected
directly
to
the
frequency
determining
VFO
element. Plexiglass
dial
is
edge
lighted;
ruled Plexiglass
pointer
rides close
against
dial
on metal
bearing
to
insure a minimum
of
parallax.
Precise
10
kc
calibration
increments
on
each band
provide
l!niform and
accurate
dial
interpretation.
KEYING-
Excellent
break-in
keying
characteristic,
a special
design aim
in
the
"Ranger,"
is
achieved
by
light
loading,
voltage
regulation
and
careful
circuit
design.
Easy
to
tune, the
"Ranger's"
basic tuning
controls
are
located
on the VFO Dial escutcheon.
QSY
within the
phone
or
CW
portion
of
a band
is
usually possible
by
merely
changing
the VFO
frequency
setting. For
larger
frequency
excursions,
simply touch up the
grid
{Buffer! tuning, adjust
loading,
and
dip
the final. Simple
as
ABC.
Other
controls,
used
for
initial
tuning, changing bands
or
changing
mode
of
transmis-
sionare
as
follows:
Off-
Tune-Phone-Standby-CW
switch,
Bandswitch, Crystal 1-Crystal 2-VFO-VFO
Zero
switch,
Meter
Off-Osc.-Buffer-Grid-Plate-Mod
. switch,
Audio
Gain,
RF
Drive,
Coupling
and
Auxiliary
Coupling
. The VFO
frequency
control,
Final Plate tuning and Buffer tuning dials
are
located
on
the
VFO
dial
escutcheon.
TVI SHIELDING
AND
FILTERING-Completely
TVI Sup-
pressed, the
"Ranger"
cabinet
is
sealed
electrically,
using
flexible
monel
braid
on the inside
of
the
front
panel and
large
cabinet
overlap.
A cup
type
shield seals the meter,
and spring
contact
washers on the
front
panel shafts
prevent
possible
radiation
from
shaft
clearance
openings.
Power
line and
relay
jack have
double
l
type
filters, and all
auxiliary
socker, meter,
dial
lamp, key, meter, and meter
lamp leads have l
filter
networks.
To
minimize chassis
har-
monics,
interior
harness leads and filaments
are
by-passed.
Careful
final by-passing plus special
circuit
techniques minimize
harmonics in the
output
circuit.
GENERAL
SPECIFICATIONS
VFO-EXCITER-
The
front
panel bandswitch, switches
all
stages from the
VFO
through the final
amplifier.
The series-
tuned
Colpitts
VFO circuit, with
temperature
compensation
and
voltage
regulation,
is
designed
to
operate
very
lightly
loaded
for
maximum stability.
The crystal
oscillator
/VFO
isolator
stage (6Cl6J has
broad
tuned
plate
circuits
to
eliminate
need
for
a
separate
tuning
control.
The buffer (6Cl6J
plate
circuit tunes
to
the
operating
