Page
11
To
determine
which
has
the
strongest
signal,
keep
the
antenna
aimed
at
the
target
and
simply
back
it
away
from
the
target.
The
further
away
it
is
from
the
target,
the
weaker
the
signals
become.
Keep
backing
away
until
the
meters
are
back
on
scale
and
the
strongest
signal
can
be
determined.
Or
use
the
attenuator
to
lower
the
transmitter
power.
Use
of
the
Attenuator
The
NJD
‐
5
is
very
sensitive
and
can
detect
certain
types
of
electronic
devices
from
several
feet
away.
Occasionally
the
NJD
‐
5
will
be
used
in
an
environment
where
there
are
a
lot
of
readily
detectable
electronic
devices.
They
may
be
detected
in
many
directions
from
some
distance
away.
When
this
is
the
case,
it
may
be
difficult
to
determine
what
exactly
the
NJD
‐
5
is
detecting.
The
solution
to
this
dilemma
is
to
lessen
the
power
of
the
transmitter,
which
in
turn
limits
the
detection
range
of
the
unit.
The
NJD
‐
5
has
a
built
‐
in
dial
type
attenuator
that
lowers
the
transmitter
output
in
3
dB
steps.
Each
additional
3
dB
of
attenuation
that
is
added
cuts
the
transmitter
power
by
one
half.
Three
dB
of
attenuation
cuts
the
500
milliWatt
output
to
250
milliWatts;
6
dB
cuts
the
power
to
125
milliWatts;
9
dB
cuts
the
power
to
62.5
milliWatts
and
so
on.
Keep
in
mind
that
the
detection
range
at
the
lower
power
settings
is
reduced.
Be
more
painstaking
in
the
use
of
the
NJD
‐
5.
