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User Equipment

GSP1620x4 (8) Multichannel Data User Terminal (multi-channel satellite modem - modem pool)


Multi-channel satellite modems GSP1620x4 and GSP1620x8 are intended for data transmission with 9.6 kbit/sec rate per channel. Modem functionality is based on the known patented CDMA technology of QUALCOMM and constellation of 48 Globalstar LEO satellite.

The satellite modems provide full duplex 4 (8) communication channels to the ground based, marine and avionics communication equipment or same modems (2-hops).

Service list: Mobile Internet 123, Asynchronous data transfer (Globalstar), Packet data transmission, Position location (AT-commands), Satellite mail, Web interface, FTP-service, Fax-mail, Short Message Service - SMS (incoming only) etc.

Operational features:
Modems GSP16204 (8) can be used for multi-channel monitoring/ control of distant facilities (SCADA applications) in communication systems, power stations, petroleum and gas production, in systems of multi channel access in faraway territories, telemetry, various network applications to join the remote LAN and creation of common information networks with "Star" - type topology. Besides this 16204 (8) modems gives a number of advantages to the final user:
  • tariffing is carrying out separately in each channel taking into account the actual throughput of traffic;
  • when connected to single personal computer in remote built-up area it is appeared as the 4/ 8 channel wireless modem pool with 9.6 Kbit/s data rate in each channel;
  • GlobalTel Asynchronous Data Service Pack maintained for each channel;
  • installation of outdoor antenna unit on the distance up to 30 m from the transceivers unit;
  • full RS232 interface with V.32bis and -commands support (telephone modem emulation) over the USB bus;
  • data transmission by means of standard applications for Windows, MacOS, PalmOS does not require dedicated software except USB driver for Edgeport multiuplexer;
  • does not require routine maintenance and antenna pointing (omni directional antenna);
Design & Peculiarities:
The modem consists of:
  • transceiver unit (TU), includes 4 or 8 standard GSP1620 modems, can be installed in unheated rooms;
  • outdoor unit (ODU) is an assembly of dielectric antenna, low noise input amplifier, output power amplifier and power supply. The assembly is manufactured as dust-tight and water proof envelope.
Multichannel modems GSP 1620x4 x8 have GOST-R and SARS certificates of RF.

Technical specifications:
  • RX/TX frequency band: 2.5/1.6 GHz (Globalstar)
  • Power supply: 11 ÷ 27 V DC
  • RF output power: 0.4 W (+26 dBm) per channel
  • Maximum power consumption: 35 W (4 ch), 70 W (8 ch);
  • Operating temperature range:
         ODU: -60 to +55 (humidity 5 to 80%), Group 3, 1 reliability grade
                    -40 to +40 (humidity up to 98%)
         TU: -20 to +50C
  • RF Cable length - 30 m maximum
  • Dimensions:
         ODU 140217217mm;
         TU 270135327mm (4 ch);
                487135327mm (8 ch);
         In package: 470285230mm;
  • Weight:
         ODU 2.4 Kg (4 ch), 4.3 Kg (8 ch);
         TU 2.5 Kg
         in package 6 Kg (4 ch), 8 Kg (8 ch)
Supply set:
Name Designation Quantity Comments
Outdoor unit with fastening set   1 standard
Transceiver Unit   1 standard
RF cables, length 30 m*, N- type connectors   2 standard
USB cable   1 standard
User guide and operation instruction   1 standard
Installation floppy disk     standard
Documentation on CD     Standard
Package   1 standard
Passport     standard
"AGAT" power supply (220V/12), accumulator included BRVP "AGAT" 1204 1 optional
"SHTIL" Uninterrupted Power Supply (UPS), 220 V AC/220 V AC LIK-750 1 Optional
Uninteruptable power supply, 12 V (Input 220 V AC/ 24 V DC), 3 m power cable DM-R 1 Optional
* 20 m optional length.

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