Uniden MC480 User Manual

uniden'

MC 480
MARINE RADIOTELEPHONE

OWNERS MANUAL

UMIDEN MC480

The UNIDEN MC480 VHP marine radio transceiver has been designed to give you a
rugged reliable instrument that will provide you with years of trouble-free service.
You are encouraged to thoroughly read this manual to acquaint yourself with the
characteristic and operation of your transceiver so that you can contribute to the
longevity of your investment.

With proper care and maintenance, your UNIDEN MC480 will outlast your present
vessel and serve you well on board several more. The full features and flexibility
designed into this quality transceiver will prevent it from becoming obsolete

regardless of changes in craft or geographic locations. The unit may be mounted in
any number of convenient locations by utilizing the universal mounting bracket.
The technical excellence of the UNIDEN MC480 is demonstrated by the multiplici
ty of uses for which it has been found acceptable by the Department of Com
munications.

The UNIDEN MC480 is of all solid state design with conservatively rated rugged
components and materials compatible with the marine environment. The trans
ceiver utilize as a number of gaskets, sealing rings, waterproof membranes, and
other sealants to effect a splashproof housing for protection of the electronics.

- 1 -

SPECIFICATIONS

GENERAL

Channels :

Frequency Control
Method :
Antenna Impedance : 50 ohms, nominal
Speaker : 2,85 Inch, 8 ohms
Microphone ;

Channel Display : LED numerical readout

DOC Approval :

Frequency Stability : ±0.0005%
Operating Tempera
ture Range :
Shock and Vibration :
Si 26 :
Weight : 4.5 LBS
Controls : On-Off/Volume, squelch & dimmer controls
Selector Switches :

Connectors ;

Frequency Range :

Lights and

Indicators :

Standard Accessories:

Supply Voltage :

Transmit 55

Receive 55

PUL synthesizer

Rugged 600 ohms dynamic element with coiled cord and
plug-in connector

Type approved under Australia Department of Communica
tions

-20‘’Cto +50“C
Meets or exceeds El A standards, RSI 52A and RS204A
7-1/4''W(185m/m) x9-7/8"L{250m/m) x 2-1/4"H(58m/m)

1W/25W power selector. Instant channel 16 and main
channel selector switches
Antenna, microphone, remote speaker, DC power

156 to 158 MHz transmit

156 to 163 MHz receive

Red/Green Transmit-Receive LED, Green 7 segment LED
Channel Readout, Low Power & Channel 16 LED

Plug-in microphone, mounting bracket and hardware, DC

power cord, mike hanger, spare fuse, owner's manual.

13.8V DC negative ground

TRANSMITTER

Power Output ; 25 or 1 watt (switch selectable)
Power Requirement : 25 watts output: 4.5A @ 13.8V DC.

1 watt output : 1 .OA @ 13,8V DC.

Modulation :

FM, ±5 kHz deviation (FCC designator 16F3)

- 2 -

Hum and Noise
Attenuation
Audio Distortion

Spurious
Suppression
Output Transistor
Protection
Output Power
Stabilization

RECEIVER
Sensitivity

Threshold Squelch
Sensitivity
Tight Squelch
Sensitivity
Spurious Response
Attenuation
image Response
Attenuation
Intermodulation
Attenuation

Adjacent Channel
Rejection
Selectivity

Audio Output
Power

Power Requirement

IF Frequencies

Hum and Noise
Level

45 dB

Less than 5% with 3 kHz deviation with 1000 Hz modulat
ing frequency

-70 dB

Built-in

Built-in automatic level control (ALC)

-117 dBm for 12 dB SINAD

-114 dBm for 20 dB quieting

0.20 uV (EIA method)

2yV (EIA method)

75 dB

75 dB

70 dB @ 0,3 pV desired
50 dB @ 30 iJV desired
35dB@300AiV desired

70 dB (EIA method)
±7.5 kHz@6 dBdown
±15 kHz P 60 dB down

3,5 watts minimum at 10% distortion at 1 kHz modulation
and ±3.5 kHz deviation (4 ohm speaker)

0.6A P 13.8V DC, squelched
1,2A @ 13.8V DC at rated audio output
lst-21.4 MHz

2nd--455 kHz

-50 dB (EIA method)

- 3 -

INSTALLATION

CAUTION: The MC480 will operate only with nominal 12 volt negative
ground battery systems.

It is important to carefully determine the most suitable location for your MC480
on your vessel. Electrical, mechanical, and environmental considerations must all be
taken into account. You must select the optimum relationship among these con
siderations.

Keep in mind the flexibility designed into the MC480 so that you can most con
veniently use your radio. Features which should be considered are;

1. Universal mounting bracket may be installed on either top or bottom for shelf,
bulkhead, or overhead mounting.

2. The microphone connector face forward allowing convenient in-dash or “built­in" installations.

3. The front panel can be fully reversed to provide for optimum viewing and
operating for any mounting position. (See page 5)

4. The REMOTE speaker jack may be used with an auxiliary speaker.
All connections are "plug-in" type for easy removal of the radio.

- 4 -

REVERSING THE FRONT PANEL

(8) CAREFULLY REPLACE COVER CABINET BUT ON BOTTOM OF RADIO INSERT UNDER FRONT

PANEL FIRST AND THEN LOWER AT REAR OF RADIO.

(91 TURN RADIO OVER AND RECONNECT SPEAKER WIRE LEADS,

(101 REPOSITION SPEAKER CABINET ON TOP OF RADIO AND REPLACE FOUR SCREWS TO SECURE

THE HOUSING.

(Ill RETIGHTEN FOUR APPEARANCE COVER SCREWS.

- 5 -

Some of the more important external factors to consider in selecting the location of
vour MC4S0 are:

1. Select a location that is free from sprav and splash.

2. Keep the battery leads as short as possible. Connection directly to the battery is
most desirable. If direct connection cannot be made with the supplied power
lead, any extension should be made with #10 AWG wire. Long extensions
should use larger wire.

3. Keep the antenna lead as short as possible. Long antenna leads can cause sub
stantial loss of performance for both receiving and transmitting.

4. Locate your antenna as high as possible and clear from metal objects. The
reliable range of coverage is a direct function of antenna height.

5. Select a location that does not allow the radio to be subjected to direct sunlight
(including that coming through windows).

6. Select a location that allows free air flow around the heat sink on the rear of the
radio.

7. Select a location well away from the ship's compass. Auxiliary speakers also

should be located away from the compass.

After you have carefully considered the various factors affecting your choice of
location, position the radio {with the bracket, microphone, power plug, antenna
plug, and any auxiliary plugs installed) into the selected location to assure there is
no interference with surrounding items. Make the location of the mounting bracket.

Remove the bracket from the radio and use it as a template to mark the holes to be
drilled for the mounting hardware. Drill the holes and mount the bracket with
hardware compatible with the material of the mounting surface. Install the power
cable (red is -f, black is -), antenna and all other auxiliary cables and accessories.

Install the radio into the mounting bracket and connect all cables and accessories to
the appropriate jacks and connectors.

ANTEMNA

A variety of antennas are available from a number of quality suppliers. It is
recommended you draw upon the advice of your UNI DEN Dealer in determining a
suitable antenna for your vessel and range requirements.

The general rules for antennas are: The more gain the greater the range and, the
higher above the water line the greater the range. Antennas should be located so as
not to be in proximity to metal objects. Antennas should not have excessively long
coaxial feed cables.

- 6 -

ENGINE NOISE SUPPRESSION

Interference from the impulse noise generated by the electrical systems of engines is
sometimes a problem with radios. The MC480 has been designed to be essentially
impervious to ignition impulse noise and alternator noise. However, in some
installations it may be necessary to take measures to further reduce the effect of
noise interference. All DC battery wires, antenna lead, and accessory cables should

be routed away from the engine and engine compartment and from power cabling
carrying particularly high currents.

In severe cases of impulse noise interference, it may be necessary to install a noise
suppression kit that is available from your UNiDEN Dealer.

FRONT PANEL CONTROLS AND INDICATORS

(D (D @ ® ®

1. MICROPHONE CONNECTOR . . . Plug your Microphone in here.

2. ON/OFF VOLUME KNOB ... is used to turn on the radio and set the volume
to a comfortable level.

3. SQUELCH KNOB ... is used to quiet background noise when no signal is

being received. Turn the knob just past the pointât which background noise is
objectionable.

4. CHANNEL SELECTOR ... is used to select the desired channel. The channel

is displayed by the LED readout.

- 7 -

5. 1W/25W SELECTOR ... controls transmitter output power. The IW(watt)
position should always be used for in-port or short range communications.

6. CH16 SELECTOR , . . provides instant CH16 by overriding Rotary Channel
selector. LED indicator will light indicating unit is on Channel 16.

7. LED NUMERICAL CHANNEL INDICATOR . . . indicates channel in use.

8. TRANSMIT/RECEIVE LED INDICATOR ... indicates whether transmit or
receive mode is in use. (Red for transmit. Green for receive.)

9. LOW POWER LED INDICATOR ... shows when unit is switched to Low
power (1 watt).

10. CHANNEL 16 LED INDICATOR . . . lights to show CH1G switch has been
activated.

11. DIM CONTROL . . . used to adjust the brightness of the LED's & LED display.

REAR PANEL CONNECTORS

12. REMOTE SPEAKER CONNECTOR ... If it is desired to use another speaker
in addition to the one in the radio, a four or eight ohm speaker equipped with

a miniature phone plug may be connected to this jack.

13. DC POWER CONNECTOR . . , Battery connections are to be made with the

cable supplied to mate with this connector. Remember, red is -f-, black is The
power cord is equipped with a fuse to protect the radio. Use only a Six (6)
AMPERE fast blow fuse for replacement,

14. ANT CONNECTOR . . .This connector is for connection of the antenna. A

type PL259 connector is required to make proper connection.

8 -

VHF FM MARINE RADIOTELEPHONE

CHANNELS AND FUNCTIONS

(INTERNATIONAL CHANNEL)

rHANNFI

OESIG SHIP

FREQUENCYIMHi)

SHORE

PI 157.375 157.375
02
03 156.150
04 156.200 160.800
05 156.250
06
07 156.350 160.950
08
09
10
11 156.550 156,550
12
13 156.650 156,650
14 156,700 156.700
15 156.750 156,750

16

T7 156.850 156.850

IE
19 156.950 161.550

20 157.000 161.600
21
22 157.100
23
24 157.200

25

26 157,300
27 157.350 161.950

28

60 156,025
61 156.075 160.675

62

63

64 156.225

65 156.275

66

67 156.375

68

59 156,475

70 156.525

71

72 156.625

74 156,725

78 156,925

7Э

81

82 157.125

S3

156.100 160.700

156,300 156.300

156,400 156.400 Com'l
156,450 156.450
156,500 156.500

156.600 156.600 Port Ops

156.800 156.800

156.900 161.500 Com'l

157,050 161.650

157,150 161.750

157.250 161,850

157*400 162.000

156.125 160.725

156.175

156.325 160.925

156.425 156.425

156,575 156.575

73

77 156 875 156.375

80 157,025

84 157.225
35
86 157,325
87 157.375 161.975
88 157,425

156.675 156.075

156.975 161.575

157.075 161.675

157.175 161.775

157.275 161.875

160.750

160.850 VTS

161.700 Coast Guard

161,800

161.900

160,625

160,775

160.825
160,875 Port Ops

156,375 Comi

156.475

156.525 Non Comi

156.625

156,725 Port Ops

161.525

161,625 Com'l

161.725

161,825 Public Corresp.

161.925

162.025 Com'l

TYPE

TRAFFIC

Non Com'! Yes
Port Ops Yes
Port Ops
Port Ops Yes Yes

Safety
Comi Yes

Comi Si Non Comi Yes Yes
Conni Yes Yes
Comi Yes

Navigational Yes
Port Ops
Environmental Yes Yes
Safety Celling
State Control Yes

Com'!
Port ops Yes
Coast Guard

Coast Guard Yes
Public Corresp,
Public Corresp,
Public Corresp.
Pubiic Corresp.
Public Corresp,

Port Ops

Non Comi Yes
Non Comi Yes

Non Comi Yes
Non Com'l
Port Ops

Port Ops
Non Comi
Comi Yes

Coast Guard Yes

us Gov Only

Coast Guard Yes

Public Corresp.
Public Corresp,
Pubiic Corresp,

SHIP

TO SHIP

Yes Yes

Yes Yes
Yes No

Yes No

Yes Yes

Yes Yes

Yes Yes

Yes Yes
Yes Yes

Yes Yes
Yes Yes

No. Yes Susy Tel.
No Yes Susy Tel,
No Yes
No Yes
No

Yes Yes
Yes
Yes No

Yes No Fish

Yes No
Yes Yes
Yes
Yes No
Yes Yes

Yes Yes

Yes Yes

No Yes
No Yes Busy TeL
No Yes
No Yes Susy Tel,

Yes No

SHIP

TO SHORE

Yes
Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes .Busy Tel,

Yes

Yes Fish
Yes Fish

Yes Fish

Yes

Yes

Yes Coast Guard

Yes Coast Guard

CAUTION: OPERATION ON CHANNELS NOT DESIGNATED FOR USE BY
YOUR CLASSIFICATION OR CRAFT OR ON INTERNATIONAL CHAN
NELS WHEN WITHIN AUSTRALIAN TERRITORIAL WATERS IS A
VIOLATION OF DEPARTMENT OF COMMUNICATION RULES AND

REGULATIONS AND MAY RESULT IN SEVERE PENALTIES.

PERMANENT

SCAN LIST

Fish

Envi ronmenia!

Busy Tel.
Busy Tel.

Fish

Busy Tel,

Busy Tel.

Busy Tel,

- 9 -

CARE AND MAINTENANCE

Your MC480 is a precision piece of electronic equipment and you should treat it
accordingly. Due to the rugged design, very little maintenance is required, however,
a few precautions should be observed.

If your radio has been accidentally subjected to spray or splash you should

immediately wipe it down with a soft cloth dampened with fresh water.

If the antenna has been damaged, you should not transmit except in case of

emergency. A defective antenna may cause damage to your radio.
You are responsible for the continued DOC technical compliance of your radio.

You are urged to arrange for periodic performance checks with your UN I DEN
Marine Dealer.

SERVICE

Should you find it desirable or necessary to have service performed on your MC480
you are urged to contact the UNIDEN Dealer from whom you made your purchase.
He, or any other UNIDEN Dealer, is able to provide you with complete service
performed by well qualified personnel.

If you require service that is within the terms of your warranty you should present
the validated WARRANTY CARD to your dealer to authenticate your claim. Your
WARRANTY CARD is your passport to easy service! This card is to be completed
by your dealer at the time of purchase: Other suitable documents which clearly
establish ownership and date of purchase may be used in lieu of the WARRANTY
CARD.

If you find it inconvenient to have service performed by your local UNIDEN
Marine Dealer, you may also obtain service from the Factory Service Station. If you
require factory service, please pack your radio in a suitable container which will
provide adequate protection, enclose a note describing the problem, and a copy of
your validated WARRANTY CARD or other proof-of-purchase document and
return (transportation prepaid) to:

Santronic Agencies Pty. Ltd.

13 Garema Circuit, Kingsgrove

Phone 75S 1522

P.O. Box 12, Kingsgrove, NSW 2208

If the service you require is not within the terms of the warranty, you should
specifically include written authorization of proceed with service and to agree to
appropriate charges.

- 10 -

uniden

12 MONTHS FULL WARRANTY

WARRANTOR. SANTRONIC AGENCIES PTY. LTD. 13 Garema Circuit,

Kingsgrove MSW 2308 ("SANTRONIC'K
ELEMENTS OF WARRANTY. SANTRONiC warrants. For the duration af this

warranty, its UNFDEN Marine Product to be free from defects in materials and
craftsman$hip with only the limitation or exclusions set out below,

WARRANTY DURATION, This Warranty shall terminate and be of no further effect
One (If years after the date of originai purchase of the Product or at the time the
Product is iaf damaged or not maintained a$ reasonable and necessary,► (b) modified,

(d improperly installed, (d) is repaired by someone other Warrantor for a defect or

malfunction covered by this Warranty, or le) used in e manner or purpose for which
the Product was not intended.

PARTS COVERED. This Warranty covers all components of the Products.
STATEMENT OF REMEDY. In the event that the Product does not conform to this

Warranty at any time while this Warranty is effective, Warrantor will repair the delect
and return it to you prepaid, without charge for parts, service, or any other costs
incurred by Warrantor or its representatives in connection with the performance of
this Warranty, fn addition, if the Product contains a defect or malfunction which is
not repaired after a reasonable number of attempts by Warrantor to repair the
Product, the Product or defective component will at our discretion, will be replace
without charge, when the defective product is delivered to the warrantor at 13
Garema Circuit Kingsgrove NSW 2209 free and dear of all liens and encumbrances.
Please note that while the Product will be remedied under this Warranty without
charge. THIS WARRANTY DOES NOT COVER OR PROVIDE FOR THE REIM
BURSEMENT OR PAYMENT OF INCIDENTAL OR CONSEQUENTIAL

DAMAGES.

Some states do not allow this exclusion or limitation of incidental or conseciuential
damages, so the above limitation or exduston may not apply to you.

PROCEDURE FOR OBTAINING PERFORMANCE OF WARRANTY. In the everit
that the Product does ngt conform to this Warranty, the Product should be shipped
prepaid to Warrantor at 13 Garema Circuits Kingsgrove NSW 2208, THE ORIGINAL
OR COPY OF THE SALES RECEIPT OR OTHER VALID EVIDENCE OF THE

DATE OF THE ORIGINAL PURCHASE MUST ACCOMPANY THIS PRODUCT.

LEGAL REMEDIES. This Warranty gives you specific legal fights, and ygu may also
have other rights which vary from state to state.

UTSN01786DZ

Sanironic 1

AGENCIES PTY. LTD.

13 GAREMA CIRCUIT, KINGSGROVE
PHONE [phone], TELEX AA73170
P.O. Box 1 2, Kingsgrove, NSW 2208

BRISBANE: 3/12 RANDALL ST
SLACKSCREEK, QLD4127
PHONE [phone]

(SCopyrighr 1984 Uniden Corporation

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