Electrophone TX-550 Manual de usuario

ELECTROPHONE

‘4.0

CHANNEL

Mobile 18-Channel

2-way CB radio

AM/SSB Deluxe

Model TX-550

Instruction Manual

General Description

Your TX-550 is an 18-channel AM/SSB CB transceiver,

skillfully constructed by employing the latest frequency

synthesizing technology.

The TX-550 features the following:

Compact, light weight, and suitable for mobile use.

Digital PLL frequency synthesizer.

Clarifier.

Noise blanker and noise limiter incorporated.

Compatible with three modes of operation, LSB, USB, or

AM.

Lighted S/RF meter.

Digital LED channel readout.

Capable of public address operation.

Reversible ground polarity.

External speaker jack.

Deluxe detachable microphone.

All mounting brackets and hardware included.

Warranty

Standard Components Pty. Limited warrants this

product to be free from defects in material and

workmanship for a period of ninety days from the

date of purchase.

We reserve the right to determine whether damage has

been occassioned by accident, misuse or improper

installation whereby the warranty would be void.

For under warranty service the equipment should be

returned to your supplier with a full description of the

fault. Only authorised service agents will be authorised

to repair equipment under warranty and these charges

would be accepted by the distributor.

Retailers or Suppliers who do not have an authorised

service section must return this equipment to Standard

Components Pty. Limited for under-warranty service.

If any authorised repair work has been attempted on

the equipment, the guarantee will be void.

All equipment returned to the distributor for under

warranty must be sent freight pre-paid.

Standard Components Pty. Limited reserves the right

not to repair or replace during the under-warranty

period free of charge output transistors which may

have been damaged due to incorrect aerial installation.

Technical Specification

General

Frequency.

27.015 to 27.225 MHz.

Channels.

18.

Frequency Tolerance.

±0.005%.

Channel Composition.

PLL [phase-locked-loop]

synthesizer.

Operating Temperature Range.

—30

C to +50

Power Supply.

13.8 volts DC, negative or positive

ground.

Mode of Operation.

LSB, USB, AM.

Receiver

System.

SSB. Single conversion superheterodyne.

AM. Dual conversion superheterodyne.

Sensitivity.

SSB. 0.25 microvolt for 10 dB S/N.

AM. 1 microvolt for 10 dB S/N.

Selectivity.

SSB. 2 kHz at 6 dB down.

AM. 6 kHz at 6 dB down.

Clarifier.

±800 Hz range.

Audio Output.

3 watts at 8 ohms.

Squelch Range.

SSB. 0.7 to 500 microvolts. AM. 1 to

500 microvolts.

SSB. 10.695 MHz. AM. 1st; 10.695 MHz,

2nd; 0.455 MHz.

SSB Transmitter

Generation.

Double balanced modulator with crystal

latice filter.

RF Output Power.

12W PEP at 13.8V DC.

Carrier Suppression.

More than 40 dB down.

Unwanted Side Band Suppression.

More than 60 dB

down.

Harmonic Suppression.

More than 60 dB down.

AM Transmitter

RF Output Power.

4W at 13.8V DC.

Harmonic Suppression.

More than 60 dB down.

Modulation.

High level class B.

5111111.:1111

"""m"

Microphone Jack

Off/Volume Control-

Squelch Contro

-Channel Selector

-LSB/USB/AM Mode Selector

PA Jack (3.5 mm)-

External Speaker Jack (3.5 mm)-

-ANL Switch

NB Switch-

-CB-PA Switch

RF/S Meter-



-Channel Readout

-Antenna Connector (S0-239)

DC Power Socket (13.8V DC)-

Control Functions

RF/S Meter.

When receiving this gives the relative signal

strength of incoming signals; when transmitting RF

power output.

Clarifier Control.

If a station received is not clear during

AM reception, adjust this control for maximum S meter

indication. During SSB reception, rotate this control so

that the received signal sounds intelligible.

Channel Indicator.

An LED digital readout to show the

channel you desired. Turned off when operating the PA.

Channel Selector.

Selects one of 18 channels.

CB-PA Switch.

Your radio has been equipped with a

PA (Public Address) amplifier system. Setting this

switch to PA position actuates the PA system. Press

the push-to-talk bar on the microphone and speak

at a normal tone of voice, then your voice will be heard

through the PA speaker connected to the PA SP jack

on the rear panel. For normal CB operation, place the

switch in CB position.

Squelch Control.

Turn the knob clockwise until

background noise disappears. Now you can hear signals

without annoying background noises. Rotating the

Squelch too far clockwise direction decreases reception

sensitivity, and very weak station would not be received.

Therefore, when you are in communication with a

distant or weak station, rotate the Squelch all the way

counterclockwise.

Volume Control/Power Switch.

Turns the power on and

controls the sound output from the speaker.

LSB/USB/AM Switch.

Selects a mode of operation --

LSB, USB, or AM.

NB Switch.

If you encounter the impulse type noise

interference, place this in NB position.

ANL Switch.

Place in On (ANL) position if you

encounter atmospheric noise interference.

DC Power Connector.

Used for connecting the DC

power cord supplied. See 'DC Power Connection'

instructions. Do not force the DC power cord plug

onto the pins. Align it properly to insert the connector.

PA SP Jack.

Used for connecting the PA speaker

(impedance: 8 to 16 ohm). Matches 3.5 mmo standard

type phone plug. Insertion of an external speaker into

this jack will automatically silences the built-in speaker.

Antenna Connector.

Used for connecting the antenna

and matches PL-259 type coaxial plug.

Mounting Instruction

First choose a location to be mounted. The location

should be a place where is convenient to use the

transceiver, and does not interfere with the driver.

Usually, the underside of the instrument panel or

dashboard of a vehicle will be selected. A special

bracket for this purpose is supplied with the unit.

Drill three or four holes (diameter: about 3.6 mm or

1/8") to the location to be mounted.

Attach the bracket, using self-tapping screws and

washers supplied.

A microphone hanger is also supplied with the unit.

If necessary attach the bracket on a place close to the

transceiver, using two screws included.

Secure the transceiver to the bracket by means of the

large thumb screws and washers supplied.

DC Power Connection

This transceiver is designed to be operated from 12 volts

DC battery, on either negative or positive ground system.

Power Connection for Negative Ground System.

Connect the

black

lead from the transceiver to the

metal chassis ground of the vehicle or

negative

battery

terminal.

Connect the

red

lead from the transceiver to any

convenient hot

(positive)

side of the electrical system or

plus (+)

battery terminal.

Power Connection for Positive Ground System.

Connect the

red

lead from the transceiver to the

metal chassis ground of the vehicle or

positive

battery

terminal.

Connect the

black

lead from the transceiver to any

convenient hot

(negative)

side of the electrical system

minus (—)

battery terminal.

If you can not determine the electrical polarity in your

vehicle, consult with your car dealer. However, when

you can not obtain the necessary information, directly

connect the

red

lead to the

plus (+)

battery terminal

and the

black

lead to the

minus (—)

battery terminal, to

avoid damaging the transceiver.

Antenna Connection

Warning.

Before operating your transceiver, you must

connect a proper antenna system. Operating the

transceiver without an antenna or dummy load may

cause damage to the expensive RF power transistors.

The antenna is one of the most important factors in the

operation of the transceiver with its full efficiency. An

improper antenna may decrease reception sensitivity

and lower the communication range. The CB antenna

and its mounting method will largely depend upon the

type of your vehicle, mounting position, etc. Also, the

antenna may be different according to your needs —

using your transceiver as a mobile or base station

transceiver. We recommend you to consult with the

dealer from which you purchased the transceiver or

any other CB/amateur radio equipment supply shop.

They will meet your specific needs.

Operating Instruction

Make sure your antenna system is connected to the

antenna connector on the rear panel. Do not operate

the transceiver without the antenna.

AM Reception

Connect the push-to-talk microphone to the mic jack.



Place the C B-PA switch to CB.

Turn the power on and rotate the Volume control to

increase the sound level.

Rotate the Squelch control to 9 o'clock position.

Place the LSB/USB/AM switch in the AM position.

Select the channel you desire.

To transmit: Depress the push-to-talk button on the

microphone and speak into the microphone at a normal

voice, holding the microphone 3 to 6 inches from the

mouth. Do not shout or move the microphone too close

to your mouth.

To receive: Simply release the push-to-talk button.

Adjust the clarifier control for clearer reception.

SSB Reception

Turn the power on and rotate the Volume control to

a proper sound level.

Place the LSB/USB/AM switch in the LSB or USB

position in which clearer voice reception is obtained.

If you want to communicate with the station

transmitting in LSB mode, your transceiver must be set

in the same mode (LSB) of operation. This also applys

to USB operation. Then adjust the clarifier control

slowly for clearest voice reception.

Transmission

To transmit depress the push-to-talk button on the

microphone and speak at the microphone.

To receive, simply release the push-to-talk button.

Interference Noises

During reception, you may find that your transceiver will

pick up interference noises which make the reception of

weaker stations difficult. The most common source of

these noises is the ignition system of your own vehicle,

since your transceiver is placed relatively close to your

ignition system (engine). In such a case, we recommend

you to consult with your car dealer to eliminate the

ignition noise. Usually the ignition noise will be

suppressed considerably by using a proper radio

suppression type high voltage ignition wire and suppressor

resistor in the ignition system. (Most vehicles are

equipped with this wire and resistor, but it may be

necessary to check them for correct operation). Another

method to suppress the noises is to use additional noise

suppressor which is available at your local CB radio

shops.

AUSTRALIAN 40/18 CHANNEL CONVERSION CHART

Ch. Frequency

Ch. Suggested Usage

Ch.

Frequency

Ch. Suggested Usage



26.965 MHz.

General A.M.

27.205 MHz.

General SSB.



26.975 MHz.



27.215 MHz.



26.985 MHz.



27.225 MHz.



27.005 MHz.

27.255 MHz.



27.015 MHz.

27.235 MHz.



27.025 MHz.

27.245 MHz.



27.035 MHz.



27.265 MHz.



27.055 MHz.



(3)

27.275 MHz.



27.065 MHz.

Emergency Channel (1)

27.285 MHz.



27.075 MHz.

General A.M.

27.295 MHz.



27.085 MHz.

Call Channel A.M. (1)

27.305 MHz.



27.095 MHz.

General A.M.

27.315 MHz.



27.105 MHz.



27.325 MHz.



27.115 MHz.



27.335 MHz.



27.125 MHz.

27.345 MHz.



27.135 MHz.

27.355 MHz.



(2)



27.155 MHz.

Call Channel S.S.B. (1)

27.365 MHz.



27.165 MHz.

General SSB.

27.375 MHz.



27.175 MHz.

27.385 MHz.



27.185 MHz.



27.395 MHz.



27.195 MHz.

27.405 MHz.

1. Legally Designated.



2. Suggested 2nd SSB Call Channel.



3. Suggested Road Channel.

License

Requirements

It is necessary for a person operating a citizen band

radio to obtain a license for an equipment. There is a

license fee per annum for each unit.

Applications for licenses should be lodged at any of the

Postal and Telecommunications Department's State and

District offices.

It will be necessary to advise:

(1)

Name and address of lincensee,

(2)

Make,

(3)

Model and Serial No.

and pay the fee in order to obtain the license.

The license No. will also be the call sign.

For service on this equipment please first contact your

local retailer.

Full service and spare parts supplies are available to

your retailer through the Distributor:

Standard Components Pty. Limited,

10 Hill Street, Leichhardt. NSW.

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