Standard HORIZON MST70 User Guide
MST70
Marine AM/FM Cassette
Stereo System
With NOAA Weather
Owner's Manual
Marine Division of Yaesu U.S.A.
TABLE OF CONTENTS
FEATURES............................................................................................1
REPLACEMENT PARTS.......................................................................2
LISTENING TO FM ON YOUR BOAT...................................................2
CASSETTE CARE AND MAINTENANCE.............................................2
REMOVING AND FITTING THE FRONT PANEL.................................3
INSTALLATION.....................................................................................4
Mounting..........................................................................................4
Upright or Overhead Mounting........................................................4
Flush Mounting...................................................
Electrical Wiring.........................................
Speaker Connections.......................................................................8
Antenna Connections....................................................
Fuse Replacement............................................................................9
CONTROLS...........................................................................................9
OPERATION........................................................................................10
General Functions..........................................................................10
Radio..............................................................................
Reset..............................................................................................13
Cassette Player..............................
SPECIFICATIONS...............................................................................15
ACCESSORIES...................................................................................16
LIMITED WARRANTY.........................................................................17
..................................................14
..............................5
......................................7
...................9
.................11
FEATURES
• Detachable Face Panel: Guards against theft by allowing you to remove
the face panel, rendering the player unusable. A carry case for the
detachable face panel is included.
• All Electronic Controls: The Bass, Treble, Volume, Balance and Fader
functions are all controlled by touch buttons for greater long term reliability.
• 30 Pre-set Memories: Store up to 18 FM and 12 AM stations in memory
for easy recall.
• Auto Pre-set Memory System: Automatically locates and stores local
stations into memory for you.
• Seek and Manual Tuning: Select stations yourself or let your radio find
them for you.
• Local/DX Switch: Adjusts your radio's sensitivity for distant or local
reception when seeking or scanning.
• Backlighting: Special 'night vision' orange back lighting of the display
and all controls.
• Built in Clock: Automatically displays the time when the unit is switched
off, and at the press of a button when using the radio or cassette player.
• FM Stereo/Mono Switch: Lets you manually disable stereo operation for
improved FM reception in weak signal areas.
• RCA Outputs: Provides a separate low level output for connection to
external equalizer/booster-amplifier systems.
• Water Resistant Housing: Built into a special water resistant marine
housing made from corrosion proof materials with a transparent splashresistant front cover.
• Hi Output Power: 25 Watts peak to peak output power per channel.
• Large easy to read LCD: Displays station memories, frequency, time and
selected functions.
• NOAA Weather Channels: Fitted with 10 weather channels for instant
access to local weather reports.
MST70 Owner’s Manual Page 1
REPLACEMENT PARTS
PART STANDARD HORIZON PART NUMBER
Dust Cover.......................................................................................053002027A
Flush Mount Escutcheon.................................................................063002002A
Mounting Bracket............................................................................160004023A
Mounting Bracket Knobs.................................................................154011017A
Power Wire Harness........................................................................156007001A
Rear Case Assembly......................................................................M32649001A
Speaker Wire Harness.....................................................................156008001A
LISTENING TO FM ON YOUR BOAT
The majority of FM broadcasts are music programs. Compared with AM
signals, FM signals have a wider dynamic range, are relatively immune to noise
and provide virtually distortion free music reproduction. However, because of
the nature of FM signals and the fact that FM stations are usually positioned for
shore base reception, receiving them in a moving boat may be accompanied
by problems.
• FM programs are broadcast for local reception and cannot be heard at
distant locations. To enjoy FM programs at their best, it is important that
you tune to a station that is broadcasting locally.
• FM signals can reflect from solid objects such as buildings or hills. If these
reflected signals are received along with signals arriving directly from the
transmitter, they may mix together to produce what is known as 'multipath
distortion'. This distortion is heard as noise. Often moving as little as 3 feet
from your position will correct this problem.
• FM signals travel in straight lines. Because the signals are reflected from or
absorbed by large solid objects, a signal 'shadow' may be present behind
the object which may result in poor reception in that area.
CASSETTE CARE AND MAINTENANCE
1. Tapes no longer than C-90 (90 minutes playing time) are recommended.
Avoid using C-120 tapes because they are extremely thin and may jam
your cassette player mechanism.
2. The most common cause of poor sound reproduction is a contaminated
tape head. Signs of contamination include low volume on one or both
channels and failure to produce high frequency notes. The head can be
cleaned using a cotton applicator soaked in alcohol. If the cassette unit is
used for more than one hour each day, the head should be cleaned once
or twice a month.
Page 4 Owner’s Manual MST70Page 2 Owner’s Manual MST70
3. To extend the life of your cassettes, keep them away from:
S
E
K
• areas exposed to the sun
• top of instrument panels
• the engine
• areas exposed to heat and moisture
• magnetic fields (such as speakers)
4. Replace tapes in their plastic cases when not in use.
5. Do not oil revolving parts.
REMOVAL AND FITTING THE FACE PANEL
Release
Button
Removal
Before removing the face panel, turn the unit OFF by pressing the POWER
button.
1. Press the release button to release the left-hand end of the
face panel.
2. Lift the front panel out towards you.
After removing the face panel, place it inside the supplied case to protect
it from damage. Do not leave it in a position where it could be exposed to
direct sunlight.
MST70 Owner’s Manual Page1
MST70 Owner’s Manual Page 3
Refitting
1. Make sure the face panel is the right way up as it cannot be attached
upside down.
2. Fit the right-hand end of the face panel into the tabs inside the right-hand
end of the unit.
3. Gently press the left-hand end of the face panel into place until it clicks.
Only light pressure is required.
INSTALLATION
Mounting
The MST70 is designed to be mounted in several different ways so that it can
be installed in the most convenient position. Although the MST70 is water
resistant when the front cover is closed, care should be taken to locate
it where it will not be subjected to spray or rain. The diagrams below show
the various methods of bracket mounting available.
Overhead Mount
Upright Mount
Upright or Overhead Mounting
1. Attach the two gimbal knobs and self-adhesive rubber washers to the
MST70 and slide the unit into the mounting bracket. Ensure the rubber
washers are between the bracket and the radio. Tighten the knobs firmly.
2. Temporarily position the MST70 in the desired location, tilting the radio
in the bracket to ensure you are able to get the required adjustments for
viewing angle etc.
3. Roughly mark the location of the bracket edges, then seperate the radio
from the bracket and reposition the bracket to mark the mounting hole
positions. A range of mounting holes are provided to suit most installations.
Page 4 Owner’s Manual MST70
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