INMARSAT A DHSD ONE-BOX SOLUTION

MTI's Internal HSD Demodulator option sets new performance
standards for sending Duplex High Speed Data via INMARSAT.

Click on board for 144k actual size graphic.

Effective September 13, 1996, INMARSAT granted Type Approval of the new MTI Demodulator. The demodulator is implemented on a single 7.25 inch wide, 6.5oz circuit card designed to fit inside the TCS-9700 chassis. Any TCS-9700 version C or D can be retrofitted with the new option regardless of its original capabilities for Duplex operation.

The Internal Demod replaces the external demod (either Fairchild, Comstream or EF Data) previously necessary for duplex operation. Deployment and operation are enhanced with the new integrated design.

The demodulator provides a high performance 1/2 rate Sequential Decoder as well as Differential Decoder and CCITT (ITU) De-scrambler as specified by INMARSAT.

The superior performance of the Demod, coupled with the extended G/T of the TCS-9700 provides ERROR FREE data transmissions, even in compromised operating environments. This enhanced performance has been shown to REDUCE total costs of data transmission compared to other INMARSAT products for High Speed Data (i.e. INMARSAT B terminals).

The bottom line is that you can have your TCS-9700 A terminals upgraded to DHSD without changing the present physical form factor and add only a few ounces. Or, you can stick with the old complicated, burdensome external modems that could weigh upwards of 25 pounds and take up plenty of critical space when traveling.

Now you can have the same portability and performance that Inmarsat B units have at only a fraction of the cost of a new B unit. If your budget is tight then this may be a viable alternative and the air time is only about 10 - 15% higher across the board as opposed to B service.

© Mobile Telesystem, Inc. 1998.