2. Foreword
Thank you for choosing the MDS-12 marine radar antenna. The radar antenna is designed and
constructed to meet the rigorous demands of the marine environment. However, no machine can
perform its intended function unless properly installed and maintained. Please carefully read and
follow the recommended procedures for installation, operation and maintenance. While this unit can
be installed by the purchaser, any purchaser who has doubts about his or her technical abilities may
wish to have the unit installed by an authorized Dealer or other qualified technician.
We want to Hear from you!
Your suggestions and comments are highly important to us. Please send us your feedback at
AvMap Srl
Viale Zaccagna 6, 54033 Carrara (MS), Italy
Customer support: +39-0585-784044
2.1 Features
The main features of the MDS-12 marine radar antenna:
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Built-in ethernet RJ45 connection cable to connect via a WiFi router to Seiwa Explorer 23 WiFi,
and to SWx charplotter series. (WiFi Router not included in the box).
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4kW high power all weather radar
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36NM range
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Traditional SEIWA quality and reliability in a compact, lightweight and low-cost radar antenna.
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Digital radar target technology.
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Built-in excellent sea and rain clutter algorithm.
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Fully digital signal processing.
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High performance microwave front end.
2.2 Technical Specifications
ANTENNA UNIT
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Radiator: Slotted waveguide array
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Radiator length: 55 cm
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Horizontal beamwidth: 4°
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Vertical beamwidth: 25°
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Sidelobe:
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20° off mainlobe; less than -18 dB
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O 20° off mainlobe; less than -23 dB
●Polarization: Horizontal
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Antenna rotation speed: 24 rpm (+ 2)
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Wind resistance: Relative wind speed 100 knots (51.5 m/s)
TRANSCEIVER MODULE (contained in radome)
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Transmitting tube: MSF1421B or MAF1421B
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Frequency: 9410 MHz + 30MHz
●Peak output power: 4kW nominal
●Pulselength & pulse repetition rate:
