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An
interesting service
is
the
Mobile
Telephone. FCC
has
assigned
this
service channels in·
the
range
of
152.51to152
.
81
MHz
at every
0.030
MHz
(channels are
30
kHz
apart).
Also,
454.375
to
454.95
MHz,
with
channels 25
kHz
apart
from
454.375
to
454.625
and
then
every 50
kHz
up
to
454.95.
As
a.
general rule on
VHF,
most
activity
will
be
concentrated
between
153.785
and
155.98
and
then
again
from
158.73
to
159.46
MHz
. Here
you'll
find
local government, police,
fire
and
most
such emergency
services.
If
you
are near a railroad
yard
or
major
railroad tracks,
look
around
160.0
to
161.9
for
them
.
In some
of
the
larger cities, there
has
been a move
to
the
UHF
bands
for
these emergency services. Here,
most
of
the
activity
is
in a spread
of
453.05
-
453.95
and again
at
456.025
-
459.95
MHz.
In
the
UHF
band,
the
overall spread
of
456.025
-
459.95
and again at
465.025
-
469.975
MHz
is
used
by
mobile
units
and
control
stations
associated
with
base
and repeater
units
which
operate 5
MHz
lower
(that
is,
451 .
05
-
454.95
and
460.025
-
464.975
MHz).
This
means
that
if
you
find
an
active channel inside one
of
these spreads,
you
can
look
5
MHz
lower
(or
higher
as
the
case
may
be)
to
find
the
major
base
st
ation/repeater
for
that
radio service.
NATIONAL WEATHER SERVICE RECEPTION
Continuous
weather broadcasts are
transmitted
24-hour
-a-
day
in many
parts
of
the
country.
If
you
are using a crystal set
to
one
of
the
two
channels assigned
(162.55
or
162.40
MHz),
your
PR0-16A
wi
ll
automatically
lock-in
on
that
channel, since
the
broadcasts are
continuous.
To
prevent
automatic
l
ocking,
set
the
channel
lock
-out
button
for
that
channel
to
the
"off"
position
(button
out).
When
you
want
a
weather
report,
set
the
Lock-Out
Button
to
the
"on"
position
(press in)
for
that
channel.
In
areas where
two
stations are close
to
each
other,
one
will
use
162.55
and
the
other
will
use
162.40
MHz.
Check
with
your
local FCC
office
or
the
Weather Bureau
for
the
frequency
used
in
your
area.
-10-
MAINTENANCE
The
PR0-16A
is
a ruggedly
built
electronic
unit,
with
all parts
conservatively rated. However,
you
should
treat
it
with
care;
don't
subject
it
to
excessively rough handling.
You
will
find
it
will
give
you
long
life
if
kept
free
from
dirt
and excessive
humidity.
BLOCK
DIAGRAM