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SECTION
Il
INSTALLATION
Z-1.
UNPACKING
After unpacking
the receiver, examine it closely
for damage which may
have occurred
in transit.
Should
any
sign of damage
be apparent,
imme-
diately file a claim with the carrier
stating the
extent
of damage.
Carefully check all shipping
bee
Faw
te mtmrsntinna
hafanwn
ramnaving
or destroying them.
2-2.
LOCATION.
The
receiver
may
be placed in any location that
will permit
free air circulation through the ven-
tilation
holes
and openings
in the cabinet. Avoid
excessively warm
locations
such as those near
radiators and heating vents. The external speaker
may be located in any convenient position, although
it is recommended
that it not be placed
on top
of the receiver for reasons of ventilation.
2-3.
ANTENNAS.
The
RF
input
of the
receiver
is designed
for
operation
from
either
a single-wire
antenna,
a
half-wave doublet, or other antenna with a trans-
mission-line impedance from 50 to 600 ohms. An-
tenna
connections
are
made
to a three-terminal
strip
at the rear of the receiver
marked Al, A2,
and GND. Mounting holes are also provided, adja-
cent to the antenna terminals, for installation ofan
AN
type
SO-239
connector
for
coaxial-cable
installations.
A.
SINGLE-WIRE ANTENNA
The simplest antenna that will provide satisfactory
results
throughout
the entire tuning range
is a
conventional single-wire antenna. In most locali-
ties, good results
can be obtained with just the
15-foot length of antenna wire supplied with the
receiver.
(See
figure
2.) Attach
one
end
of the
wire to terminal AJ, connect the jumper link be-
tween
terminals
A2 and GND, and then extend the
wire about the room
in a convenient manner.
If
the receiver
is operated
in a steel-constructed
building or where receiving conditions are excep-
tionally poor, an outside antenna,
50 to 100 feet
long,
may
be
necessary,
The
outside
antenna
should be erected
as high as possible
and kept
free from surrounding objects.
In some
locations,
reception may he improved by
connecting
a ground wire (ordinary copper wire)
from
terminal
GND
to a cold-water pipe or out-
side ground rod. While the use ofan outside ground
rod installed in accordance with Insurance Under-
ees
WIRE
13@
aU,
\oumper
us
LINK
156-001747
Figure 2. Single Wire Antenna Installation.
B.
HALF-WAVE DOUBLET ANTENNA
j
ee:
Sean
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LIFEET)=
FREQUENCY (MC)
Olt
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r
ve
fs)
75
OnM
TWIN-LEAD
|
|
JUMPER
LINK
156-0017 48
Figure 3.
Typical
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