Hammarlund FM50A - Antenna Installation Guidelines

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controls

under

the

dash.

Wherever

the

cable

goes

through

the

chassis,

use

a

heavy

rubber

grommet

to

prevent

chafing

and

eventual

short

circuit.

Extra

precautions

seldom

take

more

time

when

the

installation

is

being

made,

but

can

save

many

hours

of

future

maintenance

and

possibly

a

dangerous

situation

for

the

driver.

Remote

Installations:

Whenever

it

is

not

practical

or

desirable

to

have

the

radio

unit

mounted

in

view

of

the

driver,

it

should

be

mounted

remotely.

In a

passenger

car

the

most

practical

place

is

usually

in

the

trunk;

however,

there

are

certain

vehicles

that

adapt

themselves

to

other

locations.

Always,

bear

in

mind

that

the

battery

cable

should

be

as

short

as

possible

and

use

the

same

precautions

discussed

for

the

floor

mount.

Place

the

unit

in

such

a

way

that

it

will

not

interfere

with

loading

and

unloading

of

the

trunk

and find

the

shortest

route

from

the

unit

to

the

battery,

running

the

cable

along

this

route.

Avoid

sharp

metal,

protrusions,

and

use

every

means

to

protect

the

cable

from

abrasion.

Whenever

it

is

necessary

to

run

the

battery

cable

on

the

outside

of

the

vehicle

under

the

floor,

stay

clear

of

areas

that

get

extremely

hot,

such

as

the

exhaust

pipe

or

the

muffler.

The

cable

connecting

the

unit

to

the

remote

head,

should

be

run

on

the

inside

of

the

vehicle

unless

it

is

possible

to

employ

metal

flexible

tubing.

The

remote

control

unit

consists

of

an

"on-off"

switch,

a

volume

control,

a

squelch

control,

speaker,

and

indicator

lights.

Since

it

is

small

and

light,

it

can

be

mounted

almost

anywhere

that

is

convenient

to

the

driver.

Wiring

and

installation

instructions

are

furnished

with

the

remote

control

kit.

Battery

Cable

Installation:

The

battery

cable

should

be

run

from

the

unit

to

the

battery

in

as

short

a

line

as

possible.

Somewhere

near

the

battery,

mount

the

fuse

holder

and

fuse

with

the

two

sheet

metal

screws

furnished.

Terminate

the

"hot"

lead

at

the

fuse

holder,

cutting

off

any

extra

cable.

Using

this

extra

cable,

run

a

lead

from

the

other

side

of

the

fuse

holder

to

the

"hot"

side

of

the

battery.

Terminate

this

"hot"

lead

at

the

battery

terminal,

or

on

the

starter

post.

Never

connect

to

a

voltage

point

on

the

vehicle

that

has

wire

smaller

than

the

starter

cable.

Do

not

substitute

a

wire

that

is

of

smaller

diameter

than

that

furnished

with

the

installa-

--

tion

kit.

The

ground

lead

(black)

must

be

securely

bolted

to

the

ground

side

of

the

battery,

or

to

a good

ground

point

near

the

battery.

Take

every

precaution

against

abrasion,

and

make

all

connections

tight

to

prevent

future

possible

maintenance

problems.

Antenna

Installation:

General

installation

instructions

are

furnished

with

the

various

antenna

kits

however

there

are

certain

precautions

that

must

be

observed

when

installing

any

antenna.

The

most

frequently

used

antenna

will

probably

be

the

quarter

wave

whip. An

ideal

loca-

tion

for

this

antenna

is

usually

on

the

roof

of

the

vehicle,

or

on

the

deck

of

the

trunk

lid.

Avoid

mounting

the

antenna

close

to,

or

parallel

to,

metal

objects

such

as

windows,

corner

posts,

etc.

Generally,

always

mount

a

quarter

wave

whip

as

high

as

possible

on

the

vehicle

and

with

as

much

metal

in

a

flat

surface

as

possible

under

and

around

the

antenna.

For

best

possible

"car-to-car"

communications,

the

antenna

should

be

mounted

at

least

18

inches

from

the

edge

of

the

flat

portion

of

the

roof

and

preferably

in

the

center.

1.

After

drilling

a

hole

of

the

size

called

for

in

the

antenna

instruction

sheet,

clean

all

burrs

above

and

below

the

hole.

Remove

as

much

of

the

sound

deadening

material

as

possible

from

the

underside

of

the

roof

for

a

distance

of

about

1/4

inch

around

the

hole.

2. Run

an

electricians

snake

(1/4" wide)

through

the

hole

in

the

roof

to

the

area

of

the

com-

munications

unit.

It

will

usually

be

necessary

to

pull

down one

or

more

cross

ribs

to

provide

clearance

for

the

snake.

Use

an

awl

or

other

small

pointed

tool

to

lever

the

ribs

(or

pull

the

-10-

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