VSAT DSi9 Ka (90 cm)

High-speed internet in Ka-Band

The increasing demand for a fast internet at sea on boats, yachts or any other marine vessel has led to the development of antenna solutions in Ka-band, a band working on higher frequencies than Ku-band, capable of extremely fast and performing data connections between the modem and the satellite.

EPAK DSi9Ka satellite internet antenna can reach very high speeds both in upload and download. Its' solid, rugged and robust design is made to endure the hardest requirements in harsh seas. Completed with fine-tuned components and perfect interaction between each single part of the marine satellite antenna, the DSi9 guarantees excellent network availabilities even under the most challenging conditions and an Internet connection speed at sea never seen before.

The DSi9 Ka-band VSAT antenna is part of the "Evolution Series", EPAK's own development which combines two Gyro techniques for a perfect orientation and stable connection with the satellite. This feature allows the antennas to re-acquire the signal after passing a blockage 30 times faster than conventional tracking technologies, resulting in a reliable and seamless internet at sea.

Pioneers in Engineering

In 2013 EPAK has rolled-out the worldwide first marine satellite internet antenna operating in Ka-band: a revolutionary step based on vision and understanding the benefits for new applications of the Ka-band.

Complete solution
Today the offer extends beyond hardware and includes various customized tariff packages with the aim of providing one-hand-solutions for the various requirements for fast and reliable internet at sea .


90 cm

Radome dimensions (D/H)

111 cm x 114 cm


58 Kg

Azimuth range


Elevation range

-10° to +90°



Max. tracking speed




Satellite acquisition

completely automated


0633 6437 284 39

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Dimensions & Weight
Radome (D × H) 111 cm × 114 cm (43.7" × 44.9")
Weight (incl. radome) 58 kg (127.87 lbs)
Reflector & Feed Subsystem
Reflector diameter 90 cm (35.43")
Converter / Transceiver NJR, Skyware (other transceivers optional)
LNB* Integrated in transceiver (LOF 18.25 GHz)
BUC* Integrated in transceiver (LOF 28.05 GHz)
Available BUC power 5 W (other wattages optional)
RX antenna gain 43.0 dBi @ 20.2 GHz
TX antenna gain 46.7 dBi @ 29.5 GHz
RX/TX polarization* Circular (X-pol)
G/T >18.5 (clear sky, 30 ° elevation)
Position acquisition Internal GNSS (GPS)
Tracking receiver Internal, 950 - 2150 MHz; BW 2.5 - 10 MHz
Frequency Band
RX frequency* 19.7 - 20.2 GHz
TX frequency* 29.5 - 30.0 GHz
Convertible From Ka- to Ku-Band via separate kit
Drive Subsystem
Tracking technology EPAK® Evo: Electronic Beam Forming (EBF-Gyro) + 3D Rate Gyro + 3D inertial + GNSS
EBF Gyro drift calibration rate 12.5 msec (80 times per sec)
Max. tracking speed roll-pitch 30°/s (each axis)
Azimuth range Unlimited
Elevation range -10° to +90°
Maximum ship motion Roll: ±30° @ 6 sec
Pitch: ±20° @ 6 sec
Yaw: ±8° @ 6 sec
Ship motion (for stabilization accuracy tests) Roll: ±30° @ 10-12 sec
Pitch: ±20° @ 8-10 sec
Yaw: ±8° @ 15 sec
Motion system 2-axis
Power Specification
Power supply antenna (ODU) 24 VDC / 20-100 VA ( supplied by ACU)
Antenna input voltage TX (BUC) 24, 30, 48/250 VA (supplied by ACU)
Modem type Working with several modem types
Modem approval Standard type approval; CE & EPAK type approval
Lock on time Typ. 60 sec (Time to Online depends on modem)
Satellite acquisition Completely automated by DVB-S2-Receiver and/or modem confirmation (according to ETSI 302 340)
EPAK DivKit compatible Yes
Humidity According to IEC 60945, 100% condensing
Vibration According to IEC 60945; MIL-STD-167-1
Shock According to IEC 60721-4-6; MIL-STD-810F
Rain IP56
Wind Operational: < 150 km/h (< 81 knots)
Survival < 200 km/h (< 108 knots)
Compass safe distance ≥2.00 m (according to IEC60945)
Compliance CE (Maritime), ETSI; Complies with specifications of EC directive 1999/5/EC Radio & Telecommunications Terminal Equipment (R&TTE); compliance with EC directive 2006/95/EC, EMC directive 2004/108/EC and IEC 301-427
Operation temperature -20°C to 55°C
Storage temperature -30°C to 85°C
Antenna Control Unit
Dimensions 48 cm x 4,45 cm x 37,4 cm (19" Rack 1HU size)
Gyro interface NMEA0183 / NMEA2000 (via RS422 or RS232) / SIMRAD RGC11
Input voltage, frequency 90~264 V AC, 47~63 Hz
External I/O Ethernet, USB 2.0
Local user interface LCD - 2 push keys
Modem interface Ethernet port
Remote access TCP / IP
GPS Built-in GPS

*Sample values. Data may vary depending on the transceiver used.


Datasheet VSAT DSi9 Ka

Datasheet VSAT DSi9 Ka

Wiring Scheme VSAT DSi9 Ka

Wiring Scheme VSAT DSi9 Ka