Communications Module

Figure 1-19.—Basic IMOSS LAN configuration. 755CD Thinkpad, which uses a 486DX4 100 MHz processor and the Windows 3.11 operating system. All components are packed in ruggedized cases. The GFMPL software is loaded via CD-ROM. Both a classified and an unclassified version are available. GFMPL provides four basic functions: environmental data assimilation, environmental data analysis, sensor detection range and coverage predictions, and data file maintenance. GFMPL will be discussed in detail in chapter 2 of this module. Keep in mind that when the classified version of GFMPL is operating with any of the IMOSS computers, that computer, as well as any other attached devices or networks, must be classified at the appropriate level. When using the IMOSS in a network, you must take precaution to ensure that classified data is not inadvertently transmitted or made available to unauthorized sources. Communications Module The purpose of the communications module (COMM MOD) is to receive alphanumeric weather data and facsimile broadcast data via the HF receiver or satellite (fleet environmental broadcast data) using shipboard communications facilities. The receiver of the module has the capability to connect to the host ship’s antenna system or be deployed independently with its own antenna. Currently, the communications sub-system consists of either an IBM 760EL (model U6F) or an NEC VERSA 2430CD notebook computer. The system also consists of a Kenwood R-5000 HF radio receiver or a Drake R8A communications receiver. It also includes a Dymek DA100D Tuner/Power supply receiving antenna and/or a Dymek DA 100E all-wave receiving antenna and various interface devices. 1-32