Uniden PC-404 User manual

unidEft'

4O.CH FM

MODEL FC-4o,4

OWNER'S MANUAL

TRANSCEIVER

SPECI FICATION
GENERAL:

Frequeacy
Frequency Coverage.

lMicrophone.

Operdting

Corrrol

Voltäge.

MODEL PC-i104

(PLL)

.Phase Locked

Synthesized Circuit

.CH l-40 26.965 to 27.405 [4Hz
.Plus in Dynamic Typ€, 600

.13.2V

Loop

DC Nominal

ohm

(Positive

or

Semiconduclors

lnternal Speaker

Exre_ndl Speaker

lmpedan

lmpeddn

Size..........

TBANSIVIITTEB:

BFourput..

Modutation .

E'nission
Frequency

output

RECEIVER:

Sensitivity

Selectivity....

lntermediate

WARNING:

BeforeinsrallationofyourlransceiverensurethattheinstructionsaJereadcarefully,as

rnode

Tyoe

Tolerance .

l;pedance.

dBS/N....

for 20

FreqLrency

Fejection...

{Nominal)

without a suitable aerial

..

result in damage

may

to internal

electronic components-

1

.......4W

.. .. . . .FN4

..

. . . .F3

. . .50

. . . . . .i

.

..........DoubleCorveßionl

. .

. . ....1.5Wat10%TH.D

.27 Tränsktoß

22 Diodes

5 t/c's

.8 ohm

.8 ohm

.160mm(w) x 55mm{H)

lvläximum

. .1600

Hz

Unbälanced

ohm,

Nominal

/lV

dB

6

1st 10-695 MHz

2nd 455 Kl.lz

.7odBNominal

operätion of the

at 6

KHz,

60

x 217mm(D)

dB at 10 KHz

unit in the transmit

Licencing

Conditions:

The model PC4O4 is designed ro operate under PTT rules
and regulations.

you

until

on the

-.

1

2
3

5

6

7

I
I

1o

11

12
13
14
15
16

18
19
2A

hav€ obtained the nece$ary licence to allow use

permitted

chännel Freouencv

in MHz

26_965

26.515

26385

27.O05

21.O15

27.O25

27.035

2],045

27.065

27.O15

2-t.oa5

2-7.105

21,1t5

27.125

2-1,135

27.155

27.16s
27,115
21,145

21.2A5

Operation

27 N4Hz C.B. frequencies.

of this unit is not

2l

22
23
24
25
26
21

2A

29
30

31

32

34
35
36

3a
39

40

permitt€d

21.2t5

27,225

27.255
2J,235

27.245
2J.265

21.275

27.285

2-1.305

21.315

21.325

27.335
2J,345

21,365
21,375

21.445

Description:

The PC404

suitable for

circuit

is an ;ll transistor 2-way radio transceiver

mobile operation. A

provides

40

crystal controlled

frequency

PLL transmit and

synthesizer

receive channels ln the 27 I\,4Hz ban.l, engineered for
trouble free

Current drain on 12 voks D.C.
operation over long

Beceiver:

The

veßion

PLL

corporates a

optimum receptlof. A ceramic filter

select'vity and high adjacent channel

transmissions on adjacent chännels cause

A väriable squelch control is incorporated to silence

receiver when no siqnals are received.

performance.

periods

receiver is

superheterodyne tVpe,

a sensitive and

opeGriol on d"

number of features desisned to

is

exceptionaily

is feasible even with

highly selective

providing

40

C.B. chon1cl".

rejection.

low and

yo!r

dual-con

crystal controlled

rhe circu

provides

minlmum inter-

As a

I

provide

sharp

result,

lhe

Transmitter:

The transmltter offers crystal-controlled operation on al1
40 C-8. channels, watt oi R.F.

rhe Cirizens Band Serui.e

power

is the egal imit for

r

OPERATING

(1)

On/Off

Clockwise
an au.lible

F!rther

from

(2)

Squelch

Ljse.l lo

switch

clockwise

rhe speaker.

confuol:

signas.

rolared ln

wnere noiF

ChannelSelector:

{3}

rotary switch

This
transmit

(4)

Channel

L.E.D.

the 40

Dispay ;ndicates

position

(t)

iq)

irt

a

INSTRUCTIONS:

and Volume

rotation

"Click"

qui€t

The squelch

of lhe

whlch

rotation

the receiver

conÜol

a clockwls€

'oud

s€lects

sp""!e

in lhF

receive operation

and

lndicator:

rotarY switch

contrcl:

conlrol

knob will

will swirch

incr€ase the

will

during

shouLd

direction

di.poFaß

the

one of

th€ channel

(3)

produce

the unit.

on

output

absence

the

be slowLv

point

the

to

40 channels

selected

of

for

bv

Mic Gäin:

{5)

This contro

microphone

for modulation

(6)

R.F. Gain:

This control

receiver

(7)

P.A./C.8. Switch:

Connect

publlc

The

switch

ln the microphone

lo!dspeaker.

should

(8)

Hi Low

is used to

input s€nsltivlty

is used to

section. Clockwls€

öhm loudspeak€r

an 8

address

(7)

in the P.A.

is

For radio communicatlon

to its C.B.

be set

Tone Switchl

' With the swltch

adiust, as

for optlm!m

during transmission.

adjust th€

rotation

to the

amplifier

positlon

is amplified

position

in the Low

operat€s

{pushed

and

position

required, the

amounl

sensitlvitY o{ the

wiLl increase

jack (l7)

P.A

when the

in)r speech

heard in the P A

th€ switch

(oud.

(out)

treb e is

:t

the

(1)

a

(o

(!?'

€)

(!)

(9)

Dimmer

This switch

LED

reduces

(10)

S/RF

This switch is used to select lhe mode of the meter,

The iunction of this switch

Switch:

channel

bdghtness.

MOD

Switchj

lsed

ls

display

to adjust the brightness of rhe

and the meter. DlN4

jn

the S/RF

the meter shows re ative transmitter R.F. oltpur

Power,

ard input signal strength

the IvIOD

position,

the meter shows level of modula

when receiving.

tion when transmitting, also shows lnput level

P.A. amplifier when P.A./C.8. switch

(7)

position

position,

is in the

of

switch must not be

onrennd

co-n4crpd

the transmitter

in the PTT

switch and speak in a normalvoic€

the microphone,

ps.

I

When

goes

rhe T.x.

ln

r'p

back into receivinq.

L.E.D.

operated lf rhere is no

ro !r€

can be damaged.

soclF

To transmit:

5-10cm(2 4") in front

PTT

bLnon . ,elecspo

ln rhe transmit

(13)

tighrs up.

(16).

suitäbt€

O'herrse

of

rhe I]dnlce vel

position

push

inro

your

The meter is a multi-funcrion meter. As explained in

th€ for€going

reldtivö

q.T.

paragmphs,

ourp rr,

the meter indicates the

rLF

.tre19rh

of

signa in so called S units, and the modulatiof level

(12)

R.X. lndicator:

Lisht Emittinq Diode

rFode

o ooerdr'o . I ir dic"t")

(13)

T.X. lndicator:

Liqht Emittlnq Diode

mode

of operatins. lt indicates red while

(L.E.D.)

(L.E.D.)

which indicates

lo,

ee

9

which ind;cates

mitting,

(14)

Nlicrophone

Socket:

Confection of the microphone is via the

the side of the transc€iver.

pushbulton

is a

teceive,

a so called Push.To-Talk switch. NOTEI

for

switching between transmit and

On the

microphonethere

-hp:

ecei!ing.

Lorir

the

the

trans-

socket ät

The

g

(15)

This transceiver

with negative as

uss negative

one of the

(16)

Connect a suitable

C.B- band to

{eeder cable

DO NOT OPERATE

TBANS]VIT

can be connected

well as

ground,

poles

but it

of the battery

aerial especlalLv

conn€ctor

should be of 50

THE TBANSCEIVEB

NNODE WITHOUT

AFRIAI CONNECTED. FAILUBE

WITH THIS WILL

TO THE TRANSISTOR

ING

THE TRANSCEIVER.

RESULT IN

posltive

ground

ls easY to

is connected

(16).

desisned

The aerial

ohms impedance

DAI\,IAGE OCCUB.

CIRCUITFY

to 12v

svstern

ltlost caß

verifv which

to the

for the

and its

IN THE

A SUITABLE

TO COIV]PLY

WITHIN

(17)

External

An external

nected to
panel

dress systern. The speaker

from the microphone

Physical separation

and speaker

External speaker

18)

{

The

P.A./Speaker Jack:

8 ohm 4.wan speaker

the P.A. SPKR

when th€ transceiver

to

or lsolation of the

is important when operatingthe

Jack:

r\te'nd Sp""le Lred

monitoring. The ext€rnal speaker

ohm impedanc€

änd be rated to

watts. When the external speaker

internal speaker is automati.ally

jack

Located on the rear

is used as a

should be directed away

prevent

acoustic

public

feedbzck.

mlcrophone

P.A.

fo- @no.e ecp!a

should have 8

handle at least

must be con.

plugged

!s

disconnected.

in, the

ad

ät

4.0

5-

INSTALLATION INSTRUCTIONS:

Mounting:

The transcelver may be moLrnted to

dash board of

car, truck etc..

a

Aways mount the unit to enable

readily acc€ssab €, but in a suitab

ik€ly to cause injury ir case of co

Afiach rhe bracket ro the undeßide of the dashboard

using the self tapping screws

celver to the bracket using

screws

angle

provided

before tightenins.

and tit the unit to

the uideßide of th€

using the special brack€r

the contro s to be

position

e

llsion.

supplied. Attäch the trans

thal is least

the two knur€d securing

th€ most cofv€ni€nt

Th€ transc€iver is deslgned to operate from a battery

source

employins

D.C.

power

The
positlve

connected to the nesative

n€gative

terminaj

isnltion swltch. Connect the Black ead to a suitable

section of the car body. ln a
nect th€ B ack iead to a sultab € terminal on the
or the accessory wire on the

Bed

Th€

connectlon ls

terminal on the ignltion switch. Connection at this

will ens!re the

lransceiver wh€n the isnitlor key is r€niov€d.

12 vots D.C.

of

positive

a

power

cable supplied is used to make the fece$ary

connectlon to the transceiv€r.

R€d

€ad to a sultable

transceiver

(with

lead

{+)

earth

on

side

inline fuse

of the electrical system. The Black lead is

vehic

the fls€ box or the acc€ssory wir€ on th€

draws

satisfactory

pow€r

may

lt

neqative earth svstem. The fused

or

(-)

e conn€ct the

metal

se.tion

maximum current of 2 amps thus

a

to the accessory or radio

is automallca ly cut off to th€

be installed on a

holder)is

connected

v€hice

to

the

side of the system. ln a

Red lead to a suitab e

flse

meta

box

positive

earth vehicle con-

ignltion switch. Connect the

of th€ car body.

point

,6-

ANTENNA INSTALLATION

TIoN

AND CONNEC.

Microphone

Attach

I\4icrophone

lnsert the

microphone

the microphone

Bracket:

Connection:

pin plug

4

socket

Confe.t

DC

nq

PowerCord

bracket

the coi ed

end of

at the

of the transceiver

provid€d

(13).

Terminal

To enabe

necessary

Due to the

[,4H2

27

impracticabl€. There are

the PC-404

lo instal a suitable

many types ot antenna

operat]on

C.B.

antenra aväilable

temporary or

enable

When selecting an antenna

(1)

lt must

(2)

The antenna and

Aft€r a suitable

and häs

essential
p€rformance

be so designed

antenna

been connected

that lt is core.tly

ls obtain€d.

For adjustment an

required to

be connected

With the transceiv€r

channel

prefe6blY

transceiver to

specific

also rnany

permanent

its

S.W.R.

switched

between

button on th€ microphone.
Following the

merer a reädlng

adjustment

to achleve the

meter.

made with the transmitter

(Any

manufact!rers

of the s.w.R.

length of

to the

owest readinq

adjustments

be used lt will be

antenna on

there are

details of installation are

a wlde

variation in the tvpe

different attachnrents

mounting of the antenna

please

rernember

use in th€

for

feeder cable

has been

must be of

installed on

to the antenna

adjLrsted

(standing

to ensure

wave ratio)

in line with

on select

22 and

18

instructions

wil be obrained

rhe antenna

possible

to the antenna

made

swlt.hed

off)

rhe vehicle.

avai able

following

the

27 l\,4H2 C.B

50 ohms

th€ vehic e

socket

{15)

optlmum

meter is

th€ antenna

a suitablv

push

the PTT

for th€ S

mav be

required

on the S.W.R.

should

for

of

to

it ls

lead

clear

W R.

sllsht

be

1,

After

achieve the lowest

figure lower

measurement on

qive

length

the

a satisfactory reading.

of the antenna

reading

than 1.4

is satisfactory) repeat the

channels 1 and

has be€n

on the S.W.R.

meter

40 to ensure they also

altered to

(any

S.W.B.

lf at any time during the S.W.H. meäsurement a result of

311

is achieved imm€diately release the transmit

otherwise

lf

a

points

designed

antenna should not be coiled in a neat co;l but

evenly distributed e.g. under the rear seat.

damage

satistactory

to check are:

for

27

may occur to transistor

S.W.R.

N4Hz operation. Any surplus cable to the

measurement cannot be obtained,

Ensure the

clrcuitry within

antenna

button

being used is

left un-

8-

SCHEIVIATIC DIAGRAM

-

ilt+,ljil

5'Ä!.

flprtr-

:;-.

,,

-l

'ti

F:f

i: