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27 Cards in this Set
- Front
- Back
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VHF purpose, benefits, limitations |
P: VHF circuits supports short range LOS Comms for shore, ground and aircraft B: clear and relatively static free, unaffected by the weather L: 25-35 nautical miles / 100-150nm between ships and aircrafts Must have constant LOS |
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SINCGARS CONFIG |
AN/SRC-54B RT-1730(C): Outdated, larger, slower, manual AN/SRC-54C RT-1730E(C): Newer,smaller,faster |
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SINCGARS OP MODE |
Single channels( no antijam) Freq hoping (has antijam): end points hop at the same frequency. |
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SINCGARS RT CONTROLS |
Power, channel, comsec, function, MODE, DIM, Volume (whisper),RF power control (PAR), LO/M - voice only HI- voice + data PA - (power amp) voice and data transmission, this is the standards setting. |
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SINCGARS source of power |
PP-8422 power supply is a DC to DC solid state power converter |
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UHF range |
300mhz-3ghz: short range, Los, SATCOM Weather affects UHF |
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Uniform Vs Romeo |
Uniform: non secure, plain mode unclass Romeo: secure UHF voice circuit, cipher mode, transmits sensitive MSG's Both use the same equipment |
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UHF components |
Antenna: transfers+recurved RF waves Multicoupler: provides RF path between transceiver and the antenna (4 transceivers to 1 antenna) Transciever: provides LOS Comms in Freq range 225-399 MHz (converts RF to AF and visa versa) (WSC-3v7) Dig Mod Radio (DMR): allows operator to reconfigure RF assets to meet changing mission reqs. Switching Matrix: used to electronically interconnect equip to achieve a complete circuit Crypto equip: encrypt/decrypt for sensitive info as it is transmitted/received. Channelizer: works with a phone to allow a selection of a preprogrammed channel Phone: voice to electrical energy as an AF Loud speaker: project audio from the phone |
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Purpose of a coupler and filter |
Couplers electronically lengthen and shorten antennas (or they tune them)
Filters are designed to split a received signal from the antenna into multiple signals of different frequencies. Each filter signal travels from the filter to a receiver that is on the same frequency. |
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Couple types |
Single coupler Multicoupler (must be spaced by 3 MHz) Coupler groups |
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URA-38 coupler modes |
Manual and auto mode |
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Coupler and coupler control model |
Cu-983 (coupler)- topside on deck Cu-3698 (coupler control) - located in radio |
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OA -9123 resources and setup steps |
Resources: Comms plan/equip plate/SOP/tech manual Setup steps: 1) prepare for power on 2) power on 3)press MDIF to allow filter to tune 4) enter filter # 5)enter circuit Freq 6) verify Freq 7) clear Freq |
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Purpose of patch panels + switching matrices |
Connects various pieces of equipment to form a complete circuit, which provides the flexibility needed in naval comms |
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Red v black |
Red: uncrypt/ decrypt voice circuits only and connects crypto equip and interface to red phones Black: unclass encrypted data and voice circuits... Connects receivers/ transmitters/ transcievers to crypto equip and interface units/converters |
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How to patch equip |
Two jacks/slots
One for transmit, one for receive Use patch cords to connect equip and to break normal through connection |
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Patch making steps (SB-4124) |
1) select and inspect the patch cord 2) ID the equipment and Jack/slots 3) insert each end of the patch cord |
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Function of sas buttons |
Used to operate the equipment and connect components to build a circuit Also stared: Equip that needs to be connected in a circuit is electronically selected by pushing buttons in the correct sequences |
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SAS buttons |
Line (on black and red) Trunk (on black and red) Channel (red phone only) Trans/receive (black phone only ) |
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Set up steps for SAS |
1) set mode: click local 2) set program: perform assign function 3) assign connections: line channel-> channel trunk 4) verify connection (Assign - channel- channel # - enter -verify - clear) |
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SAS faults |
Operator error/ bit faults/ other |
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SAS manual patching sets |
Step1) access the electronics drawer 2) remove LIM+TIM Cards 3) instal new LIM+TIM manual patch card 4) connect cards 5) secure card+ close csp |
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Purpose of channelizer,amp, loud speaker |
Channelizer: selects preprogrammed channels that work like speed dialup numbers on a telephone - up to 66 channels Amp: amplifies the signal from radio to loud speaker Loud speaker: allows a signal to be heard w/o having to pick up the handset of a red phone (recieving only, no input) |
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Purpose of the KY-58 crypto |
used for secure, insecure and LOS circuits. Half duplex |
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Key types + storage location |
Tek( traffic encryption keys) - encrypts and decrypts normal Comms traffic, such as voice and data info signals (a.k.a X ray) Kek ( key encryption keys) - protects Tek during transit and storage. A.k.a u-key |
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Ky-58 resources |
Provides secure+unsecure voice Comms/ accepts+ stores keymat 6) 1 kek and 5 teks (1-5) Resources from : Comm plan (shipspecific) /commstatusboard/ tech manual |
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Steps to load keymat |
1) set KY-58 mode to receive keymat (LD mode) 2) zeroize ky-58 3) select fill position 4) connect fill device 5) select keymat to be loaded 6) transfer key 7) set mode for op 8) disconnect all from KY-58 9) record keymat location Remember to zeroize before filling and before switching off |
