[MDC-721/741/740]  [MDC-1041/1040] ]  [MDC-1540/1541/1560/1510]  [RADARpc w/P-Sea WindPlot Software]
[MD-3641/MD-3642]  [MD-3840] [MDC-1520]

MD-3840
12" Radar with 4kW Of Power

• Dual speed antenna
  By using two levels of antenna speeds you have an optimized target reception capability, i.e., on short range, the 50 rpm speed provides faster update of the targets approaching or passing nearby, promising a secured watch and safer navigation in close range. With 25 rpm speed, the targets will be illuminated for relatively longer period of time by the slower speed, This causes the targets to be presented strongly on the screen. This speed is also good for long range observation.
• Function keys and menu system
  By assigning your most frequently used functions to the two FUNC keys, you can quickly access favorite radar functions. The menu system also makes for easy selection of the different menu choices.
• The pointing device
  Newly developed pointing device allows the setting up of the off-centering position, pointing cursor, etc. in quicker and more accurately.
• Optional range scales
  In addition to the standard range scales you can add optional ranges to your needs via the menu.
• GPS receiver module built-in
  A GPS receiver module can be built-in to the display unit. No external connection is needed except the GPS antenna cable. By using a GPS receiver, the radar can be upgraded to provide various navigational information, including your position, etc., plus various radar picture modes includes north up, course up and true motion displays.
• Man-Over Board function
  By assigning the MEMO L/L function to either of the FUNC key, you can immediately enter your current position by pressing the assigned key. (The GPS receiver module must be connected) This function is particularly useful for locating a "Man-Over Board".
• Flexible warning zone setting
  Warning zone can be created easily by designating two points using the pointing device anywhere on the screen. The alarm zone can be set either IN or OUT alarm mode.
• Improved receiver performance
  The performance of the receiver section has been improved to provide a higher definition picture on short range and to enhance the long range performance as well.
• Wide picture area
  The 180mm circular area is maintained across the screen for radar picture presentation for better observation.

KODEN MD-3840 RADAR - Specifications

Antenna unit

Model

MD-3840T

MD-3840F

Aerial

3.5 feet (Open)                 

4.5 feet (Open)

Peak power output

4 kW

Transmitting frequency

9410 ± 30 MHz

Beam width     Horizontal: 
Vertical: 

2.4º
25º                                   

 1.7º

Rotation speed

50/25 rpm

Pulse length (usec)/        

S: 0.06/4000
M1: 0.15/2000
M2: 0.4/1000
L:  1.0/500

IF center frequency

60 MHz

IF band width

S,M1: 20 MHz
M2, L:  5 MHz

Noise figure

Better than 5 dB

Operating temperature

-25º to + 55ºC (-13º to 131º F)

Operation in wind (relative)

70 knots

GPS receiver section (Option)

Receiving frequency

1575.42 MHz ± 1 MHz

Receiving channel

Digital 11-channel parallel/sequential

Receiving code

C/A code

Sensitivity

Better than -130 dBm (elevation angle: 5º  or over

Tracking speed

200 knots maximum

Accuracy               Position

15 m RMS (without SA), 100 m 2D RMS (with SA)

Velocity

1 m/sec (with SA)

Note:  Accuracy is subject to change in accordance with DOD civil GPS user policy.

Display unit

Display unit

12-inch green monochrome high resolution CRT

Resolution

480 x 640 pixels

Video level

8 levels

Presentation modes

Head up *north up *course up, **true motion

Range scales (nm)

1/16, 1/8, 1/4, 1/2, 3/4, 1, 1.5, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48

Rings interval (nm)

1/32, 1/16, 1/16, 1/8, 1/4, 1/4, 1/4, 1/2, 1/2, 1, 1, 2, 2, 4, 4, 8, 8

Range scales (nm)

125, 250, 500, 1k,1.5k, 2k, 3k, 4k, 6k, 12k, 16k, 24k, 32k, 48k, 64k, 96k

Rings interval (nm)

25, 50, 100, 200, 300, 500, 500, 1k, 1k, 2k, 2k, 4k, 4k, 8k, 8k, 16k, 16k

Off-center

Sweep origin can be moved to any position within 75% of the effective diameter

Echo trail interval

Continuous, 15, 30 sec., 1, 3, 6, min., OFF

Alarm

Alarm can be optionally set (entry/breakaway), proximity, cross track error

Minimum range

Less than 20 m (66 feet) on 1/8 nm range

Range discrimination

Better than 20 m (66 feet)

Range accuracy

Better than 7 m (23 feet) or 0.8% of the maximum range of the scale in use, which is the greater

Bearing accuracy

Better than ± 1º

Navigation data display

Boat position (Latitude/longitude, Loran C COP) or speed/heading

Instants (event) memory

9 points

Waypoint memory

90 points

Route memory

5 routes (Max. 20 waypoints) with reverse trail

Other functions

Gain, STC, FTC, Auto tune, heading marker off, interference rejection, target expansion, zoom, two VRMs, two EBLs (0.1º step), floating EBL, cursor position (latitude/longitude), parallel cursor, bearing of target (true/relative), distance unit (nm/km), signal processing, location memory.

Input data format

NMEA-0183 (BOD, BWC, GGA, GLL, GTD, HCC, HDM, HDT, HSC, VHW, VTG, WDC, WPL), NMEA-0182, CIF, JRC

Output data format

NMEA-0183 (APB, BWC, GGA, RMB, VTG, ZDA)

Power supply

10.8 to 41.6 VDC

Power consumption

80 W or less (at 24 VDC)

Operating temperature

-15º to + 55ºC (5º to 131º F)

*North up and course up mode:  Bearing data from an electric compass, a gyro compass or a navigator is required.  **True motion:  Speed data form a speed log, and bearing data form an electric compass, a gyro compass or a navigator is required.

Registrations of present position, any location and route:  The position data is required from GPS or DGPS receiver module (Option)

EQUIPMENT LIST

Standard equipment

Antenna unit    Aerial

MRA-45

3.5 feet

1

MRA-46

4.5 feet

1

               Transceiver

MRT-147

1

Display unit

MRD-92

With vinyl cover

1

Connecting cable

CW-526

With 24-pin and one end plain

10 m (32 13/16 ft)

DC power cable

CW-89

With 3-pin connector and one end plain

5m (16 3/8 ft.)

Spare parts kit

1 set

Installation materials

1 set

Operation manual

1

Option

GPS receiver module

MRG-100

70g (0.16 lb)

Antenna unit

GA-07

With antenna cable (10m, with BNC connector)

0.69kg (1.6 lb)

GA-07L

With antenna cable (15m, with BNC connector)

0.88kg (2.0 lb)

Gyro/log interface

GRA-20A

With power and connecting cable

1.7kg (3.75 lb)

Hood

MRH-130

EMI filter

MRF-130

Magnifying lens

MRL-130

Connecting Cable

CW-153A

With 6-pin connectors

5m (16 3/8 ft.)

CW-154A

With 6-pin connector and one end plain

5m (16 3/8 ft.)

CW-155

With BNC and 6-pin connectors

5m (16 3/8 ft.)

CW-351/327

With 6-pin connectors

5m (16 3/8 ft.)

Power rectifier

PS-010

With two 5 A fuses

3.5 kg (7.8lb)

AC power cable

VV-2D8

Both ends plain

3m (9 13/16 ft.)