Metra Electronics DAT Combo Manual de usuario descargar pdf (Pagina 65)

RADIO-TV

EXPERIMENTER

ft

CHECK

KNIGHT

-KIT SAFARI

III

23- Channel

Portable

CB Transceiver

The latest

addition

to Knight's

line

of

CB

transceivers

really

offers something

different

and unusual,

which, although

it

may

not

appeal

to all,

will

certainly

find

a home

with

some.

The Safari

III

looks much

the same

as

any

other

solid -state

rig,

with the

usual

PTT

microphone.

But

the

difference

is

that the

mike

is

in reality

a speaker

/mike;

release

the PTT switch,

and

the sound

is

right

out

there

in front

of your face.

Ambient

noise

too

high?

Just

move

the

mike

next to your

ear

and

literally pour

the

sound

down

the

canal.

Priced at

$84.50, the Safari

III is avail-

able

only

as a semi

-kit. To

insure

that

the

transmitter meets

FCC regulations,

the

en-

tire transmitter

section

is

factory -wired,

tuned, and

adjusted. The

builder

makes

ab-

solutely

no adjustments

to

the

transmitter

section

during

or after

construction.

Build-

ing

the

kit

consists,

essentially,

of

mounting

the

receiver

and

modulator

components

on

the

printed

circuit board

(the transmitter

and

receiver

utilize the same

board).

And

Since

output

jack is part of

printed -cir-

cuit

assembly,

entire transceiver

can be re-

moved as

unit for service and

adjustment.

FEBRUARY

-MARCII, 1967

with

the exception

of the

front panel

con-

trols and power -cord socket,

there

are

few

components

which are not mounted

on the

PC board.

Push And Solder.

Construction

is

not

dif-

ficult since most

of

the

work consists of

pushing

the components through

the match-

ing holes and soldering.

Typical of

Knight -

kits

utilizing

printed- circuit

wiring, the

printed wiring in

this unit

has an

"anti

-run"

coating

that

exposes

the copper

foil only at

the point

to be soldered. Even

if you

use

excessive

heat or solder, the solder

will

be

confined to the

exposed

copper

(a good

fea-

ture

for beginners and

oldtimers alike).

The only point at

which

extreme

care must

be

taken is

with

the

crystal-

socket

-to-

selector-

switch

wiring. Although the transceiver

is

normally supplied

with but one set of crys-

tals,

there

are sockets

for full 23- channel

operation.

That means

46 crystals, and,

therefore,

46 leads running

to the selector

switch. While

the

selector switch

wires are

color -coded,

the same color

is used

several

times.

As a result, extra

care

must be

used

to

insure that

the right

socket lead goes to

the

right

selector

terminal

(yep,

we

goofed).

Ready

To Go.

When the kit assembly

is

completed

you're

in for a real surprise.

For

with the exception

of the

three second-

oscil-

lator

coil adjustments,

all receive

coils are

pre -aligned.

Even

a careful

instrument

align-

ment

made

absolutely

no improvement

in

performance!

The finished

transceiver

line -up is

one

stage

of

RF, two stages

of overload

-pro-

tected

IF amplification,

a

noise limiter, an

S -meter

amplifier,

and

the usual audio sec-

tion.

The transmitter

uses

three

transistors.

Performance

is just about

what

you

would

expect

from

this

line

-up.

Power output at

71

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