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Frequency Spectrum

IPBC Study

QuestionAnswer
ELF 3Hz-3Khz
VLF 3KHz-30KHz
LF 30KHz-300KHz
MF 300KHz-3MHz
HF 3MHz-30MHz
VHF 30MHz-300MHz
UHF 300MHz-3GHz
SHF 3GHz-30GHz
EHF 30GHz-300GHz
ELF Uses long range submarine comms.
VLF Uses "near surface" comms to subs. radio navigation transmissions. subject to surface wave propagation
LF uses "near surface" comms to subs. radio navigation transmissions. subject to surface wave propagation
MF uses commercial AM broadcasting. reliable, medium range comms
HF uses shortwave radio comms. fairly long range tactical comms. AKA OTH Comms. HFRG. DMR.
VHF uses commercial FM, BTB, MAD/IAD, SINCGARS, DMR.
UHF uses "work horse" of Navy Satcoms. LDR. Havequick, DWTS, CUDIXS, TADIL A, TADIL J, IRIDIUM, OTCIXS, TADIXS A, TADIXS B, DMR, EPIRB, NAVMACS,
SHF uses IP services. HDR. GBS, SIPR/NIPR, JDISS, GCCS, TESS, POTS, VTC, JWICS
EHF uses LDR, MDR. TSN, NIPR/SIPR, CEC, JWICS, DSVT, MDU, ATO, OTCIXS, TADIXS,
GBS Services UAV video, Video, MDU, Imagery, ATO, JSIPS-N, METOC, Television
HF advantages distance
HF disadvantages clarity, LDR
UHF ADV very widespread, small/lightweight equipment
UHF DIS LDR, very crowded, susceptible to jamming
SHF ADV HDR, joint interoperability
SHF DIS DSCS crowded, CBSP costly, small antennas make ships "disadvantaged" users
EHF ADV Anti-Jam, Low probability of detection/intercept, survivable in nuclear environment
EHF DIS LDR, very susceptible to rain/environmentals
UHF Satellites UFO, MUOS, IRIDIUM
SHF satellites DSCS, CBSP
EHF Satellites MILSTAR, POLAR
UFO UHF Follow On. 39 channels per satellite. Satellites 4-6 UHF/SHF/EHF, Sat 7 UHF/SHF/EHF, Sat 8-10 UHF/SHF/EHF/GBS, Sat 11 UHF/EHF. Use WSC-3 (older ships) or SRC-58/SRC-27
MUOS Mobile User Objective System replace UFO operate in "disadvantaged" areas
IRIDIUM 1 full duplex channel for small platforms, secure/unsecure voice, unsecure data up to 10kbps, global coverage (including poles), user always in view of at least 2 satellites,
DSCS Defense Satellite Communication System. WSC-6. POTS, STU III, VTC, NIPR/SIPR/JWICS, IP services,
CBSP WSC-8
MILSTAR Military Strategic and Tactical Relay secure and jam resistant comms
POLAR
Mutliplexing MUXing
DAMA TD-1271. 4 ports to 1 channel. UHF comms. Time division multiplexing. capable of full duplex.
Mini DAMA MD- 1324. 2 ports to 1 channel. UHF comms. on subs, P-3 aircraft, MCM, DDG platforms. TDMA.
SHF Multiplexer TIMEPLEX LINK/2+
INMARSAT International Maritime Satellite.
LOS comms HF, VHF, UHF
CUDIXS Acronym Common User Digital Information Exchange System
CUDIXS shore based, message store and forward system. Uses UHF SATCOM.
FBS (Fleet Broadcast System) transmits messages, weather information, and intel data to ships. Shore sends via EHF to satellite, satellites converts to UHF to ship.
TADIL A (Tactical Data Information Link) Link ll. UHF or HF. primary means of realtime data exchange. UHF LOS/UHF SATCOM/HF. 2250 bps
TADIL J (Tactical Data Information Link) Link 16. primary means of real-time joint tactical data exchange. UHF LOS/UHF SATCOM, typically 56Kbps, TDMA.
OTCIXS Acronym Officer in Tactical Command Information Exchange Subsystem.
OTCIXS OTH data exchange circuit, two ship/shore/sub/aircraft comms, 25 KHz SATCOM channel (Non-DAMA), uses WSC-3, 2400 bps.
TADIXS A (Acronym) Tactical Data Information Exchange Subsystem
TADIXS A Primary OTH data exchange circuit, shore to ship data circuit. One way shore to ship, two way shore to shore comms. 2400 bps DAMA circuit, used at places like Fleet Command Centers, Joint Intelligence Centers, and Cruise Missile Activities (CMSA)
TADIXS B Tactical Data Information Exchange Subsystem
TADIXS B OTH, contains exclusively ELINT data, Non-DAMA channel, One way-comms circuit.
UHF 5Khz CUDIXS can use it, communicate w/ TLAM,
INMARSAT UHF. 3 variants (A, B, B HSD). provide UHF SATCOM capabilities for small platforms, JWICS/NIPR/SIPR connectivity. 128K data, 16K voice
Satellite Ownership Navy- UFO, MUOS Army- DSCS payload Air Force- DSCS sat platform, MILSTAR
Created by: aj72776
 

 



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