V-UHF AIRBORNE RADIO SYSTEMS SRT 651_e-A-SE-008/V2/12 ...

The control Unit selection depends from the application.EPM protection is provided by frequency-hoppingschemes over the 30MHz to 88MHz band (SINCGARS)and 225MHz to 400MHz band (SATURN, HQ I-II).In all cases where specific Customer requirements are tobe met, a SELEX Elsag, proprietary frequency, hoppingscheme (EASY-II) is available for EPM protection.The SATCOM facilities (built-in for the RT-651/N-NSand RT-651/P versions and external for the RT-651/N-Vversion) allow access to NATO Satellite communicationschannels in the DAMA (Demand Assigned MultipleAccess) mode and to SICRAL satellite covering theMediterranean area.All the versions can operate in a LINK-11 net whenassociated with an external LINK-11 data terminal set(an airborne version of the modem has been recentlydeveloped by SELEX Elsag), a capability which allows usein all missions where co-operation between naval and airforces is required.All the versions can be associated with crypto equipment(i.e. KY-58, KY-100, SELEX Elsag CM-1[x]7) for operationin the secure voice/data baseband/diphase modes andwith a variety of ancillary equipment (Homer Indicator ID1351A or equivalent, Direction Finder AN/ARA -50.DF 301E, Chelton 7-60 or equivalent) to enhanceoperational capabilities.The software oriented design of the RT-651/N allowsimplementation of the different versions primarily byaddition of new software packages or modification of theoriginal ones.At hardware level, RT-651/N has a sliced-modularconstruction which allows for easy replacement oraddition of modules in a stacked way.This allows any of the available versions to be convertedinto another one by software/hardware reconfigurationof the operating functions and of the operatingparameters.Transceiver Version Freq. range Control Interfaces EPM SATCOM30–400 30–470 ARINC MIL-STD RS-485 SATURN HQ I & II Easy II SINC MIL STD SICRAL(MHz) (MHz) 429 1553 (Ctrl Panel) GARS (**)RT-651/N x x x xRT-651/N-A (*) x x xRT-651/S x x x x xRT-651/N-S x x x x xRT-651/N-M x x xRT-651/E x x x xRT-651/N-NS x x x x x xRT-651/P x x x x x x x(*): ETSO CERTIFIED(**): TDMA/DAMA I.A.W. MIL STD 188-181A, -182A, -183, JITC CERTIFIED