Questions and Answers
What does AN/TSC-154 stand for?
Secure Mobile Anti-Jam Reliable Tactical-Terminal (SMART-T)
What is the symbology for SMART-T?
Backwards Z with E at the bottom and the 154 at the top
What frequency bands does SMART-T use for transmission and reception?
TXMT - EHF (uplink) 43.5GHz - 45.5GHz; RCV - SHF (downlink) 20.2GHz - 21.2GHz
What types of attacks is SMART-T designed to withstand?
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What are the power requirements for SMART-T?
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What is the maximum data rate for SMART-T?
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What are the transport options for SMART-T?
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Which of the following are configurations for SMART-T operations?
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What is the note related to SMART-T's maximum data transmission?
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What are very small aperture terminals (VSAT)?
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How are VSATs categorized?
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What components are included in VSAT-S/M?
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What does the 303T Antenna Controller provide?
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What is the purpose of the KA-Band SSPA?
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What is the operational wind loading for a 1.2M VSAT antenna?
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Which VSAT equipment requires the most transit cases?
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Study Notes
SMART-T Overview
- AN/TSC-154: Secure Mobile Anti-Jam Reliable Tactical Terminal (SMART-T) enables secure, jam-resistant data and voice satellite communications.
- Data rates: Up to 1.544 Mbps via EHF and 8.192 Mbps via AEHF; provides long-haul connectivity.
SMART-T Symbology
- Visual representation: Backwards Z with 'E' at the bottom and '154' at the top.
Frequency Bands for SMART-T
- Transmit uplink (TXMT): EHF frequency range from 43.5 GHz to 45.5 GHz.
- Receive downlink (RCV): SHF frequency range from 20.2 GHz to 21.2 GHz.
- Antenna: Compact, offset Gregorian design with a 4.5 FT composite reflector.
SMART-T Resilience
- Designed to withstand biological and chemical attacks, jamming, detections, and electromagnetic pulses.
Power Requirements
- External power: Supports AC from standard 110/220 VAC generators and utilizes 12-volt batteries for terminal operation and data retention.
Transportability Features
- Configured for transport in M-1097, by helicopters, fixed-wing aircraft, and various vehicles and ships.
Operational Configurations
- Modes of operation: Point-to-point, broadcast for multiple SMART-T connections, and mesh configurations.
Max Data Rate Capability
- Peak data rate: 8192 Kbps with support for 4 Digital Transmission Groups (DTGs).
- Typical configurations include 4 DTGs at 512 Kbps, 2 DTGs at 1024 Kbps, or 1 DTG at full capacity, with a typical operational limit of 2048 Kbps via CX-11230 due to DTG port limitations.
SMART-T Limitations
- Limitations include take-off angles, obstructions (man-made or natural), and weather conditions.
VSAT Capabilities
- Very Small Aperture Terminals (VSAT) use Commercial-Off-The-Shelf (COTS) equipment, with installation in under thirty minutes.
- Supports Ku/Ka-band and X-band (only on VSAT L), utilizing both TDMA and FDMA multiplexing methods.
VSAT Variants
- Variations include VSAT-S (1.2M), VSAT-M (1.8M), and VSAT-L (2.4M).
VSAT Equipment Logistics
- VSAT Small Equipment: 5 transit cases (3 indoor, 2 outdoor).
- VSAT Medium Equipment: 8 transit cases (3 indoor, 5 outdoor).
- VSAT Large Equipment: Mounted on trailers comprising 3 transit cases.
Transport Methods for VSAT
- Configured for transport by HMMWV, 7-ton trucks, and air transport.
VSAT-S/M Components
- Indoor and outdoor components include RF transit cases, network cases, uninterruptable power supplies (UPS), SSPAs, BUCs, TLNBs, and antenna control units.
RMR 1005 Specifications
- Protects TDMA modem from voltage and reference frequency damage while providing external power and reference signals.
Versa DC Power Supply
- Delivers 24 VDC to the 303T controller and 48 VDC to the SSPA/BUC.
Uninterruptable Power Supply (UPS)
- Provides power conditioning, backup power, and operational capabilities on standard AC or military vehicle power.
VSAT Antenna Specifications
- 1.2M and 1.8M antennas feature specific operational parameters, such as elevation (5-90 degrees), azimuth (±120 degrees), and wind loading capabilities.
303T Antenna Controller Specifications
- Operates on 24 VDC, interfacing with M&C Laptop GUI software and providing necessary voltage to other components.
Ku TLNB Specifications
- Provides complete Ku-band coverage and is tunable across three bands during normal operations while being controllable by the M&C system.
KA-Band Specifications
- SSPA/BUC amplifies signals across 30-31 GHz with an output power of 50 watts.
- KA-band Low Noise Block Converter downconverts frequencies to L-band while providing amplification.
Differences Between Small and Medium VSAT
- Variances primarily consist of outdoor equipment size, feed assembly configurations, equipment location, and wind resistance of antennas.
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Test your knowledge with these flashcards on the SMART-T and V-SAT technologies. Each card provides essential definitions and key symbols associated with the Secure Mobile Anti-Jam Reliable Tactical-Terminal systems. Perfect for students and professionals in the field of satellite communications.
