
2.
INSTALLATION
2.1
UNPACKING
Carefully remove the receiver from the shipping carton, and examine it
for evidence of damage.
If
any
damage
is discovered, immediately
noti-
fy
the transportation company that delivered the receiver. Be sure to
keep the shipping carton and packing material, as the transportation
com-
pany
will
want to examine them if there is a
damage
claim.
Keeping the
carton and packing material is recommended even when no shipping dam-
age
occurs
,
as having the original carton available makes shipment of
the receiver
much
easier should it ever be
necessary
to return it to the
factory for service.
2.2
LOCATION
The SPR-4 will work well in almost
any
location.
Extremely
hot
areas
such as over a radiator should be avoided.No air circulation
around
the
receiver is required .
2.3
POWER REQUIREMENTS
The SPR-4
will
operate on 120 or 240 VAC
50/60
Hz or from
any
12
-
15 VDC source with negative ground .
The SPR-4 is shipped from the factory
ready
for 120 V AC operation with
the power cord supplied.A
1/4
amp, slow-blow fuse, Buss type MDL
1/4,
is installed in the fuse holder on the rear of the
chassis
.
For operating from 240 V AC , the
same
power cord is used and the 120/
240 volt slide switch at the
chassis
rear is moved to the 240 position.
This requires moving the small metal keeper from the right to the left
mounting screw on the slide switch .
Also for 240 volt
operation , the fuse should be changed to a 1/8 amp,
slow-blow, Buss type MDL
1/8.
WARNING: NEVER CONNECT THE SPR-4 TO 240 VOLTS
WITH THE SWITCH IN THE 120 VOLT POSITION.
For DC operation, a separate power cord is
a11
that is required. This cord
is available with a
cigar
lighter plug installed.
2.4
ANTENNAS
For optimum performance the SPR-4 should be used with a good antenna.
For general broadcast and short wave listening, a long wire antenna from
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5 -
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