Uniden LTD 950 User Manual

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by Uniden

LTD 950

VHF Marine Radio

OPERATING GUIDE

PRESIDENT LTD 950..........................................................................................................1

Installation.............................................................................................................................2

Choosing A Location...............................................................................................2

Engine Noise Suppression......................................................................................3

Antenna Considerations..........................................................................................3

Installing the LTD 950 ............................................................................................3

Controls And Indicators........................................................................................................ 4

Front Panel Controls.................................................................

Front Panel Indicators

Tri-Function Keys......................................................................

Rear Panel Connectors

Operation ...............................................................................................

Dual Watch

Manual Tuning .........................................................................

Instant Channel 16 Communications

Timed Scan (SEEK)..................................................................

Normal Scan (SCAN)

Weather Scan ..........................................................................

US/International Channels

Fish Channels...........................................................................

Telephone Channels................................................................

USCG Channels.......................................................................

ENT (Entering channel numbers into Memory Scan)...

Memory Scan.......................................................................

Public Address..............................................................................

Weather Alert

Transmitting...................................................................................

Dimming the LCD Display Backlight and the TX Indicator

Optional Accessories...........................................................................................................15

Channels And Functions (Tables).........................................................................

Specifications........................................................................................................

Maritime Radio Services Operation......................................................................

Care And Maintenance.........................................................................................

Service..................................................................................................................

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PRESIDENT LTD 950

The PRESIDENT LTD 950 VHP marine radio transceiver has been designed to give you a rugged, reliabie instrument that wiii provide you with years of trouble-free service.

With proper care and maintenance, your PRESIDENT LTD 950 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 technical excellence of the PRESIDENT LTD 950 is demonstrated

by the multiplicity of uses for which it has been found acceptable by the U.S. Federal Communications Commission. The PRESIDENT LTD 950 is acceptable for compulsory use on “party boats," for use on vessels subject to the Great Lakes Radio Agreement or bridge-to-bridge require ments, for general pleasure and commercial vessels, and certain land stations in marine service.

The PRESIDENT LTD 950 is of all solid state design with conservatively

rated rugged components and materials compatible with the marine environment. The transceiver utilizes a number of gaskets, sealing rings, waterproof membranes, and other sealants to effect a splashproof

housing for protection of the electronics. The unit may be mounted in

any number of convenient locations on your vessel by utilizing the

universal mounting bracket.

You are encouraged to thoroughly read the rest of this Operating Guide to acquaint yourself with the characteristics and operation of your trans

ceiver so that you can contribute to the longevity of your investment.

Be sure to complete the Product Registration Card at the back of this

Guide, cut it out and mail it. You also need to complete the enclosed

Warranty Registration Card and mail it.

Keep your receipt as proof-of-purchase in case warranty service is required.

PRESIDENT is a trademark of Uniden America Corporation.

INSTALLATION

CAUTION: The LTD 950 wilt operate only with nominal i2 volt negative

ground battery systems.

It is important to carefully determine the most suitable location for your

LTD 950 on your vessel. Electrical, mechanical, and environmental

considerations must all be taken into account. You must select the

optimum relationship among these considerations.

Keep in mind the flexibility designed into the LTD 950 so that you can most conveniently use your radio. Features which should be considered are:

1. The universal mounting bracket may be installed on either the top or bottom of a shelf, on a bulkhead, or for overhead mounting.

2. The REMOTE speaker jack can be used with an auxiliary speaker.

3. All connections are 'plug-in” type for easy removal of the radio.

4. Front fire internal speaker allows convenient in-dash mounting using

the optional bracket.

CHOOSING A LOCATION

Some important factors to consider in selecting the location for your

LTD 950:

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

2. Keep the battery leads as short as possible. Direct connection 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 gauge wire.

3. Keep the antenna lead as short as possible. Long antenna leads can cause substantial loss of performance for both receiving and transmit

ting.

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.

ENGINE NOISE SUPPRESSION

Interference from the impulse noise generated by the electrical systems

of engines is sometimes a problem with radios. The LTD 950 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. Ail 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. Contact your PRESIDENT Dealer for more information.

ANTENNA CONSIDERATIONS

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

In general, communication range is increased by using a high-gain antenna placed as high as possible above the water line. Antennas should be located away from metal objects. Antennas should not have

excessively long coaxial feed cables.

INSTALLING THE LTD 950

After you have carefully considered the various factors affecting your

choice of location, position the radio (with the bracket, microphone,

power cord, antenna and any auxiliary cables installed) Into the selected

location to assure there is no interference with the surrounding items.

Mark 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.

Connect the red wire of the supplied power cord to the positive (+)

battery supply. Connect the black wire of the power cord to ground. The

power cord is equipped with a fuse to protect the radio. Use only a Six (6) AMPERE fast blow fuse for replacement. Connect the power cord to

the keyed connector on the power "pigtail" {See page 6).

Connect the antenna and all other auxiliary cables.

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

CONTROLS AND INDICATORS

NOTE: For details of use of these Controls, see the OPERATION

section.

FRONT PANEL

CONTROLS

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NOTE; Items 2 through 6 are Tri-Function keys. Refer to the

"Tri-Function Keys" section for detailed descriptions.

2. HLD (Hold)

3. DIM

4. H/L (High/Low)

5. SON (Scan)

6. C16 (Channel 16)

7. F/C (Functlon/CIear) - Press once for DUAL, US/INT, PA, ENT,

and ALERT. Press twice to clear function.

8. GRP (Group)- Accesses FISH, USCG, MEMO and WX

Scan Modes.

9. Rotary Channel Selector - This control is used to manually select

the desired Communication Channel (01 - 28 and 60-88), or Weather Channel (0 - 9).

10. LCD Panel - Indicators for DUAL, SEEK, SCAN, USA, INT'L, HI, LO, [^, WX, FISH, USCG, MEMO and Channel Number.

NOTE: Refer to “INDICA TORS" for detailed indicator descrip

tions.

11. SO (Squelch) - Eliminates the background noise when no signal is

being received.

12. Press-To-Talk Switch - Press to transmit; release to receive.

INDICATORS

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13. LCD Numerical Channel Display - Indicates Channel Number in

use. Weather Channels are displayed as single digits. (Example; 0,1,2, 3, etc.) Communication Channels are displayed as two digits (Example: 01,02, 03, etc.).

NOTE: LCD Status Indicators appear when status is selected by

pressing the corresponding button.

14. (Function) - Indicates F/C Mode has been activated. When

pressed, remains active for eight (8) seconds.

15. INT'L (International) - Indicates International Channel Mode.

16. USA - Indicates US Channel Mode,

17. SCAN - Indicates Normal Scan Mode.

18. SEEK - indicates Timed Scan Mode on Communication Channels.

19. TX (Transmit) - LED lights when transmitting.

20. DUAL (Dual Watch) - Indicates Dual Watch Mode.

21. HI (High) - Indicates transmitted output is 25 Watts.

22. LO (Low) - Indicates transmitted output is 1 Watt.

23. WX (Weather) - Indicates Weather Channels.

24. (Telephone) * Indicates Telephone Channels.

25. FISH - Indicates Fish Channels.

26. USCG (United States Coast Guard) - Indicates USCG Channels.

27. MEMO (Memory Scan) - Indicates Memory Scan Mode.

28. PA (Public Address) - Indicates Public Address Mode.

.IX

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29. AL (Alert) - Indicates Weather Alert Mode.

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30. NO (No channel(s) stored) - Indicates no channels have been

stored in Memory Scan Mode.

, TX

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eir no

MEMO;

TRI-FUNCTION KEYS

NOTE: For details of use of these Keys, see the OPERATION section.

VOL

FISH USCG MEMO WX

lAL US INT R ^ El IT AL: :rt

OfFf •

2. HLD(HOLD) - This key is used to slop scanning and in conjunction

with the F/C and GRP keys to access Weather Channel and Weather Alert Modes.

• Press HLD to stop scanning on a desired channel.

• Press F/C, then Press HLD to activate the Weather Alert

tunction.

• Press GRP, then Press HLD to scan the Weather Channels.

3. DIM - This key is used to adjust the brightness of the LCD Panel and

the TX LED indicator and in conjunction with the F/C and GRP keys to

access the ENT and MEMO Modes.

• Press DIM to adjust the brightness of the LCD Panel back light and the brightness of the TX LED indicator. The LCD

Panel backlight and TX LED indicator are at their brightest

level when the LTD 950 is shipped from the factory. When the

LTD 950 is turned Off, the current DIM setting is retained.

(Example: If the radio is set to dim brightness when turned

off, it will be set to dim brightness when turned on again.)

• Press F/C, then Press DIM to access the ENT Mode.

• Press GRP, then Press DIM to scan channels stored in

memory.

4. H/L (Hl/LO) - This key is used to switch between HI (25 Watts) where

allowed, or LO (1 Watt) output power and in conjunction with the F/C and GRP keys to access the Public Address and USCG Channel Modes.

• Press H/L to switch between HI and LO output power.

- Press F/C, then Press H/L to access the Public Address

Mode,

• Press GRP, then Press H/L to access USCG Channel Mode.

5. SCN (Scan) - This key is used to control scanning and in conjunction

with the F/C and GRP keys to switch between US and International

and Telephone Channel Modes.

• Press SCN to scan Communication Channels.

• Press F/C, then Press SCN to switch between US and Interna

tional Channel Modes.

• Press GRP, then Press SCN to access Telephone Channel

Mode.

6. C16 (Channel 16) - This key is used to access instant Channel 16

communications and in conjunction with the F/C and GRP keys to access Dual Watch and Fish Channel Modes.

• Press C16 to access instant Channel 16 communications.

• Press F/C, then Press Cl6 to turn Dual Watch On/Off.

• Press GRP, then Press C16 to access Fish Channel Mode.

+ 23 hidden pages

Uniden LTD 950 User Manual

TABLE OF CONTENTS

PRESIDENT LTD 950

INSTALLATION

CHOOSING A LOCATION

ENGINE NOISE SUPPRESSION

ANTENNA CONSIDERATIONS

INSTALLING THE LTD 950

CONTROLS AND INDICATORS

FRONT PANEL