B&W 600,Dip,meter User guide

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

DOIIBLE

WIRE

t:ONE

TURN

(4), (5)
instrument
cuits. For

and

is

example,
has a current
driven

element
narily a half
to

be

determined,

nect

all

feeders

so

introduced.

An

antenna

any

multiple

When

ing
the

this

to

sketch

length

operation

of
frequency
points
quency
to
short

line

similar to
The
of
made
probable

of

current

determination,

disconnect

out

any

The

resonant

may

be

the

instrument

the

transmission

as

for

current
determining
tion.

See

figure
quarter
end
and
mately

wave

open

is

resonances

at

odd
frequency.
shorted
as
placed

two

at

the

quarter

back

FIGURE 4

(S).

The

adjustment

then

the

same

the

maximum

in a beam

wave.

of its

the
the

When

it

is

necessary

and

short

may

also

fundamental

is

desired,

current

antenna

determination

maximum.

all

transmission

half

at

the

antenna

its

be

variation

at

it

is

also

as

for LC

wave

center.

frequency

to

out

all

operated

frequency.

it

and

make

one

For

necessary

lines

breaks.

frequency

measured

folded

is

coupled

line

an

LC circuit. A

distribution

the

harmonic

(7)'

transmission

similar

to a half

will

multiples

of a

by

considering

section

to a shorted

and

For

instance, a one

be

of

the

transmission

of

an

measurement

sketch

is

helpful

mode
line

with

wave

found

fundamental

When a transmission

far

end,

it

may

be

considered

to

wave

back.

transmission
The

resonant

of

the

cir-

antenna

The

is

ordi-

discon-

breaks

on

is clarify-

along

the

of

the

this

fre-

and

it

as

antenna.

end

of

the

in

of

opera-

the

far
antenna
approxi-

line

is

lines

fre-

is

~

quency
found

When
in a pure
istic
resonances
will
at

those

the

acteristic
used
degree

FUNDAMENTAL /

HARMONIC

HARMONIC

EXAMPLES

is

then

with

the

the

transmission

resistance

impedance,

will

cause

resonances

frequencies

transmission

impedance.

to

load a transmission

of

accuracy.

SECOND

THIRD

OF

RESONANT ANTENNA CURRENT

FIGURE 6

(.w

••

~

FIGURE 5

approximately

far

end

open.

line

equal

it

will

be

disappear.

to

reappear

at

which

line

is

equal

These

MAlt

--+---

.,.--

/'

./

/

.ANTENNA

ANTENNA

DISTRIBUTIONS

METER

is

to its

found

Any

the

to

facts

line

CURRENT

twice

that

terminated

character-

that

the

other

load

except

load

on

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char-

can

be

to a high

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,

"-

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4

Signal

of
receivers.
receiver
or
signal
of
the
The
used

marker
ment
sweep
intensity
adjusting

Generator

The

instrument

signal

distance

is

signal

proper

"S"

as

an

The

instrument

signals

of

generator.

in

The

is

varied

unmodulated,

tracer

meter,

indicating

television

of

the

instrument

For isolation,

may

be

fed

a

transmission
transmission
loop

that

is

the

instrument.
mission
under

line

investigation

means.

can

the

preliminary

amount

by

of

the

instrument.

is

necessary

alignment

in

some

is a convenient

in

the

circuits

In

the

marker

position

from

the

markers

to

various

line.

line

should

lightly

The

is

then

be

used

alignment

of

pickup

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so

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for

of

the

tuned

receivers,

device

for

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when

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case

may

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or

distance

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and

circuits

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coupled

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fed

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output

an

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type

indicating

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alignment.

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using

also,

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test.

test

signals

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means

end

of

with

to

the

coil of

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the

trans-

equipment

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of

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by

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of

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MAX.

CURRENT

I

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FUNDAMENTALr-

________________

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TRANSMISSION LINE

MAX.

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THIRD

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FIGURE 7

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be
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up

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meter

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Neutralization

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in:

field

strength

METER

instrument

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coupling

meter r the

measurements

functions

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to

the

sensitivity

the

coil

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as

meter

signal

may

of

the

instru-

3. HqJ:monic

4.

Investigation
transmission

Inserting a phone

jack

disconnects

modulation

The

instrument

determination

When
a 10,000
so

that a DC

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lines.

the

on

the

may

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Hum

2. Distortion

3.

Quality

using

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resistor

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standing

plug

meter

signal

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and

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in

parallel

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waves

into

and

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be

be

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phones,

on

open

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monitored.

used

for

place

with

them

to

ground.

the
the

5

HAM TRANSMlnER

Here

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many
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locate

the

and

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further

spurious

Model 600 is

useful

services

used

to

oscillations

shown

neutralize

performing

in

the

and

their

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shack.

the

transmitter,

frequencies,

one

of

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pretune
observation

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all

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signal.

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quality

for

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general

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preliminary

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receiver

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is

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alignment

shown

in

is

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of

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photograph.

the

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in

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in

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frequency
band
ment
signal

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alignment

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and

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of

radio

work

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it

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and

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of

in

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an

auxiliary

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align-

all-

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35

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INDUCTANCE

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so

0--45------~------~--------~------~-------+------~

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This

reprint
portion
Miniductors
the
maining
cut.

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graph
length.
ductors.

of

approximate

after a standard

is

for

These

EXAMPLE:-Let

mate

inductance
Miniductor
inches
Microhenries.
we
tor
point

27% of 24v.h = 6.48v.h.

and

find

that a one

coincides

representing

of a

graph

inductance

will

be

useful

value

an

example

determining

formulae

us

determine

value

#3012

total

whose

inductance

By

referring

inch

with

the 3 inch

27%

indicating

versus

of

length

on

inductance

apply

of a

length

length

of

the

length

for

determining

inductance

how

to

to

the

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section

value

to

the

of

curve

total

LENGTH

pro-

re-

has

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use

the

versus

all

Mini-

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three

is

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graph,

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at

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of

of

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IN

INCHES

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for a
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apply.

the

given

of

the

EXAMPLE:-A.

tance
ing
whose
is
length

6.48v.h

plus
the
ing
has
approximate

value

that a #3012

approximately

Due

other

resultant

after a standard

been

total

by

first

to

24v.h

to

possible

variable

trimmed,

of 6.48v.h

inductance

value

only.

CAUTION:-In

ductors,
turn

on

be

each

sure

end

2

inductance

application

above

small

learning

or

coil

is

Miniductor

24v.h,

6.48

--;-

inaccuracy
factors

of

inductance

length

may

trimming

to

allow

for

lead

value

be

known,

procedure

having

required.

value

we

the

24 =

beyond

be

or

at

lengths.

an

is

we

arrive

percentage

27%.

in

of

Miniductor

considered

cutting

least

one

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required

the

would

induc-

Assum-

at

hand,

know

at

the

cutting,
control,

remain-

as

Mini­extra

of

8

MINIDUCTOR

SPECIFICATIONS

Catalog
Number

3001

3002

3003

3004

3005

3006
3007
3008

3009
3010
3011
3012

3013
3014
3015
3016

Dia.

Turns

Inch

Yz"
Yz"

Y2

"

Y2

"

;a"

;a"

SIs"

SIs"

32

%"
%" 8

3,4

"

%"

1"

1"

1"

1"

32

16

32

Per

4

8
16
32

4

8
16

4

16

4
8

Length

2"

2"

2"

2"

2"

2"
2"
2"

3"
3"

3"

3"

'3"

3"
3"
3"

Approx.

Inductance

~h

0.19

0.75

3.0

12.0

.28

1.1

4.5

18.0

.37

1.5

6.0

24.0

1.0

4.0

16.0

64.0

In

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