DRAKE SPR-4 Especificaciones descargar pdf (Pagina 8)

50 to 100

feet

long

will

give good results .

An antenna kit (Mode1 AN-S)

is available.

For best single band performance,

a half wave dipole or other resonant

antenna , fed with unbalanced 50 ohm coaxial

table,

may be used .

How-

ever, Bands A and B require a long wire antenna.

For directional

reception

on 150 kHz to 1600 kHz, the accessory AL-4

shielded loop antenna may be

used.

All

antennas other than the AL-4

loop antenna,

connect

to the Ant.

jack

on the rear of the

chassis.

2.5

SPEAKERS

The SPR-4 has a built in 3” x 5” ceramic magnet speaker which makes op-

timum use of the available

space

in the cabinet. It may be desirable to

use an

external

speaker when the receiver is used at fixed locations

The Drake MS-4 Speaker, housed in a cabinet that matches the SPR-4,

provides

excellent audio reproduction and cornes equipped with a

table

terminated in a phono plug matching the speaker socket on the rear of the

SPR-4.

2.6

HEADPHONE OPERATION

Best results

will

be obtained with a set of good quality headphones . The

headphone

connection

is made through the

jack

at the bottom left of the

front pane1 of the SPR-4.

A standard

1/4

inch

phone plug

will

mate with

the

jack.

Connecting the headphones to the receiver turns off the speak-

er.The SPR-4

will

accommodate headphones of

any

impedance.

2.7

VIEWING ANGLE OPTIONS

As supplied, the SPR-4 sits with its base

parallel

the

mounting surface

and its front pane1 vertical to the mounting surface. With the studs and

rubber

feet

supplied, it is possible to position the SPR-4 for either of

two alternate viewing angles as shown in Figure

convert

the SPR-4

to either option, remove the bottom row of three

screws

each

side

‘of

the receiver, and remove the bottom

cover

. For Option 1, remove the

rear

feet

and snap the

small

rubber

feet

into the

holes

just inboard from

the original rear

feet

and replace the bottom

cover.

For Option 2, remove

the front

feet,

invert

them , and remount them with the

same

screws

Thread one of the accessory studs into

each

of the remounted front

feet.

Remove the rear

feet

and screw them onto the studs on the front

feet

and

replace the bottom

cover.

2.8

REAR CONTROLS AND CONNECTORS

Refer to Figure 3 for the location of the

connectors

and

controls

1 2 3 4 5 6 7 8 9 10 11 12 13 ... 65 66

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