Standard Horizon MDS-9, MDS-8, MDS-10-5, MDS-10-4 manual False echoes, Ghost echoes, Multiple echoes

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create a shdow zone behind it and prevent you from seeing targets on the other side. More importantly, if a mast or some part of the boat’s superstructure is in the path of the antenna’s sweep, this will also create a shadow zone. No targets will be recognized behind it and it could create a dangerous situation.

A.1.2 False echoes

Sometimes radar will display targets on screen that do not exist in the real world. You should be aware of how and why this happens.

Ghost echoes

Sometimes one large object very near your boat will appear as two different targets on screen. One is the actual radar echo. The other is a ghost echo generated by a re-reflection of the original signal. It comes back to your own boat, bounces back to the target, and then is picked up by the antenna on the second bounce. The actual echo appears at the correct distance and bearing on the screen. The ghost echo appears somewhere behind your boat. This type of false echo is also generated by re-reflection of waves from bridges, break walls or building along shore.

Target

Direct reflection path

Secondary reflection path

Mast etc.

Direction of ghost echo

3

1

HU

Real echo

Ghost echo

Figure A.1.2 - Ghost Echoes

Multiple echoes

If there is a large vertical reflecting surface near your boat, as in the case when you pass alongside a large ship, radar signals are repeatedly bounced back and forth between your boat and the other object. Two to four images appear on the screen at equal intervals in the same bearing. This is called a multiple echo. The image appearing closest to you is the real echo. Multiple echoes will disappear as you move away from the reflecting object or its bearing changes.

Radar Installation Manual

 

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Contents MDS-10-4/MDS-10-5 SI-TEX RadarCode Issue a 170108e High Voltage Warning Microwave Radiation Hazard Safety PrecautionsMagnetron Preheating Table of Contents Index General Information IntroductionConventions Used IntroductionProduct Support Inquiries Packing List Replacement PartsOptions Cable InstallationInstallation Considerations Prepare the Radar for InstallationElectrical and Data Connections Installation ProcedureAntenna Cable Connection ProcedureTerminal C Radar Junction BOX ConnectionsDome Connections Radar Antenna ConnectionsOpen Array Connections Port Setup Chart Plotter Connections and SET UP0 CP180 & CP180i Connections 1 CP300 & CP300i Connections 1 CP300 & CP300i ConnectionsACC Cable 2 CPV350 ConnectionsACC 1 Cable 3 CP500 ConnectionsCable 4 CPV550 ConnectionsInstalling Software Chart Plotters Software UpdateBacking up Marks and Routes Radar Installation Manual Features MDS-1 MDS-8 MDS-9 MDS-10-4/MDS-10-5 Technical SpecificationsMDS-1 Antenna Unit 1 Radar MDS-1 Dimensions and Mounting1 Radar MDS-8 MDS-8 Antenna Unit1a Radar MDS-8 MDS-9 Antenna Unit1 Radar MDS-9 MDS-10-4/MDS-10-5 Antenna Unit Weight 21.2 Kg 47lb 4 feet Weight 21.9 Kg 49lb 5 feet Radar Installation Manual Antenna GeneralSide Lobe Targets difficult to display on screen Characteristics of Radar WaveShadow zones of radar Ghost echoes False echoesMultiple echoes Distant False echoes caused by duct phenomenon False echoes caused by side lobeRadar interference Or eliminate the interference Radar Installation Manual Shifting from keel line More Installation ConsiderationsObtaining sufficient dip angle Figure B.1 Installing scanner unit Installing Scanner Unit24, 25, 27 IndexPlease Note

MDS-9, MDS-8, MDS-10-5, MDS-10-4, MDS-1 specifications

Standard Horizon's MDS series of marine radios is widely recognized for its reliable performance and advanced features, catering to the needs of boaters and mariners around the world. Let's delve into the main features, technologies, and characteristics of the MDS-1, MDS-10-4, MDS-10-5, MDS-8, and MDS-9 models.

The MDS-1 is a compact yet robust digital selective calling (DSC) radio, designed for ease of use in emergencies. It incorporates a built-in GPS receiver, allowing users to easily transmit their location in distress situations. The MDS-1 features a waterproof design with a high IP rating, ensuring it performs well even in challenging marine environments. The user-friendly interface and large buttons make it accessible for all boaters, while its lightweight construction allows for easy installation on various vessels.

The MDS-10-4 offers advanced digital capabilities, featuring a four-channel simultaneous receiver. This enables users to monitor multiple channels at once, improving situational awareness. With its robust build and exceptional audio quality, the MDS-10-4 also boasts Bluetooth connectivity, allowing seamless communication with compatible devices. This radio is equipped with a clear, backlit LCD screen for easy operation in low-light conditions, making it an ideal choice for nighttime navigation.

The MDS-10-5 goes one step further, offering enhanced functionalities and an impressive five-channel simultaneous reception feature. It comes with customizable channel settings and supports various communication modes, including VHF, AIS, and DSC. The integrated GPS and built-in loudspeakers provide clear audio output, ensuring critical information is received promptly. The MDS-10-5 is an essential tool for professional mariners who require reliable communication and navigation capabilities.

The MDS-8 model stands out for its user-friendly design, making it suitable for recreational boaters. It features a simple interface with intuitive controls, allowing users to access the most important functions with ease. The MDS-8 is equipped with advanced noise-canceling technology that enhances audio clarity, even in noisy marine environments. Its compact size makes it an excellent addition for space-conscious boaters.

Finally, the MDS-9 combines portability with performance, offering a lightweight design and rechargeable battery option. It features a rugged construction that ensures durability while providing essential functions like weather alerts, making it a vital tool for staying safe on the water. The MDS-9 is particularly favored by those who enjoy day trips or coastal cruising, as its reliable communication capabilities enhance safety and reassurance.

Overall, the Standard Horizon MDS series showcases a commitment to quality and innovation, providing users with essential tools for safe and effective maritime communication.
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