INSTRUCTION MANUAL
Serial
No.
Model
600
BARKER
237
Fairfield
&
WILLIAMSON,
Avenue
•
Upper
Darby,
Penna.
Inc.
MODEL
Dip
eter
600
SPECIFICATIONS
Frequency 1.75 to 260
Range
Dimensions
Weight
Power Supply
Tube
Meter . . . . .
Finish
.....
.......
.........
........
";4
overlapping color coded
plug-in coils
....
Approximately
Approximately
..
115
955
...
0-500
Hammeroid
volts AC.
Acom
type
microamperes
MC
with 5
3" x 3" x 7"
2lbs.
60
cycles
gray
Coil No.
600-A-l
600-A-2
600-A-3
600-A-4
600-A-5
Coil
Set
No.
600-A
Frequency Range Color Code
1.75
to
5.2
5
14
36
95
to
to
to
to
14
36
95
260
me
me
me
me
me Red
Green
White
Yellow
Blue
The
B & W
sensitive,
tronic
so
oratory.
instrument.
handy
ham
shop.
The
Model
highly
a
volt
of a
num
rugged.
sensitive
type
955
60
cycle
transformer
A
rust
case
proof
light
impervious
matic
conditions.
Model
accurate
Few
in
so
many
shack,
600
consists
oscillator
acorn
AG.
tube
line
and
chassis
contribute
in
weight
to
the
600 Dip
and
versatile
devices
ways
and
radio-TV
of a
circuit utilizing
powered
through
metallic
and
in
making
and
effects of
INTRODUCTION
Meter
will
in
from a 115
the
rectifier.
sturdy
normal
is
a
elec-
prove
the
lab-
service
compact,
medium
alumi-
this
unit
virtually
cli-
Five
sturdily
plug-in
ment.
serve
and
coils
Colored
as a means
further
instrument
The
panel
etched
the
wear
An
adjustable
aluminum,
adjustment
reading.
This
simple,
instrument
neer.
ham
valuable
are
match
dial.
plate
of
hard
of
the
accurate
is
capable
operator
time.
constructed
furnished
vinyl
bands
of
identifying
the
colored
is of
designed
service.
sensitivity
meter
to a
and
of
and
service
color
with
each
on
the
each
ranges
richly
to
withstand
control
suitable
indispensable
saving
the
man
coded
instru-
coils
coiL
of
the
reverse
permits
scale
engi-
much
The
factory
plug-in
a 955
place
tion
book.
its
packing
To
PUTTING
instrument
is
complete
coils
in a separate
acorn
within
place
type
the
The
carton
the
when
with
tube
which
instrument.
instrument
is
ready
instrument
THE
shipped
five
color
container
is
and
when
for
service.
in
INSTRUMENT
from
the
coded
box.
already
an
instruc-
taken
from
operation,
in
insert
delivering
power,
clockwise
switch
a
the
instrument
service.
INTO
the
and
in
the
reading
sensitivity
line
cord
115
volts
turn
to
turn
off
on
the
control
is
functioning
SERVICE
plug
into
60
cycles
the
sensitivity
power
position
meter
on.
and
scale
will
an
AC.
single
control
With
a coil
adjusted
indicate
and
ready
the
in
that
outlet
phase
knob
diode
place,
by
the
for
The
Model
tuning a small
ductor
coil
600
trap
and
A
MINIDUCTOR
is
shown
circuit utilizing a B & W Mini-
a
during
compression
the
type
process
trimmer
of
TRAP
capacitor.
It
may
fr,equency
be
similarily
of
chokes
used
and
for
filters.
finding
the
resonant
FIGURE 1
L C Circuits
The
main
when
used
resonant
is
done
ment
in
the
of
the
in
circuit
tuning
the
meter.
function of
as a dip
frequency
by
placing
close
inductive
being
knob
See
sensitivity control
reading
the
the
is
barely
circuit
the
The
the
1.
Traps
2.
Tank
3.
I.
4.
R.
5.
Filters (high,
After
circuit
tance
the
Fig. 8)
frequency
this
can
established
inductance.
ductance
adjusted
They
values
tance
Note
of
resonant
observing
approximately
position
coil
of
distance
discernible.
being
appropriate
above
resonant
procedure
frequency
and
chokes
circuits
F.
circuits
F.
circuits
the
resonant
has
been
or
capacity
other
is
known.
relating
has
procedure.
be
purchased
by
An
that
is
the
are
made
as
shown
chart
on
that
the
circuits
the
the
measured
inductance,
been
Known
the
inexpensive
can
in a number
Pages 8 and
approximate
sharpness
meter,
of a
tuned
the
coil of
relation
measured.
until a
sharp
figures
is
used
to
in
meter
is
dip
increased
The
is
scale.
is
of:
low
and
frequency
determined,
may
be
The
nomograph
prepared
values
for
use
use
of
known
be
easily
B&W
in
Miniductor
the
Miniductor
may
be
of
APPLICATIONS
DIP
METER
the
instrument,
is
to
indicate
circuit. This
the
to
the
and
rotating
dip
is
(1)
and
{2
keep
the
mid
scale.
is
ascertained,
until
frequency
then
read
used
in
band-pass)
of a
the
found
if
capacity
to
facilitate
of
capacity
as
standards,
values
source
trimmed
of
inductance
9.
"Q"
or
quality
compared
the
meter
(Diode
the
instru-
coil
noted
>.
The
meter
When
the
dip
of
the
frem
finding
etc.
tuned
induc-
one
or
(see
and
or
of
of in-
and
series.
induc-
by
dip
Switch
as
"Off"
the
condenser
J
nance. A sharp
higher
treme
near
be
When
end
260
noticed
"Q"
than
using
of
the
megacycles a spurious
that
with a resonance
Antennas
Antennas
from
the
inductance
It
is
important
one
resonant
must
advantageous
approximate
sketch
set-up
Generally,
antenna
the
of
with a current
of
voltage
are
best
sibility of
and
and
ordinary
to
frequency
be
taken
frequencies
the
antenna
in
terms
the
is
measured
instrument
maximum
avoided
spurious
lumped
and
to
of
maximum.
FIGURE 3
FIGURE 2
is
rotated
dip
indicates
one
the
instrument
highest
with a broad
through
a circuit of
at·
frequency
dip
should
of
the
not
be
circuit
confused
under
Transmission Lines
transmission
lines
LC circuits
capacity
remember
into
consideration.
determine
and
current
resonant
by
to
the
is
distributed.
that
more
is
present
in
advance
of
interest
transmission
distribution.
frequency
coupling
part
of
the
antenna
Although
may
be
used,
due
to
the
increased
dips.
See
SfN6LE
figures
WIRE
reso-
dip.
the
range,
may
test.
differ
in
that
than
which
It
and
line
of
the
coil
points
they
pos-
(3),
ex-
is
the
an
3
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