ESWS COMMS Flashcards
(39 cards)
What is the frequency range for High Frequency (HF)?
3 MHz - 30 MHz
HF is commonly used for long-distance communication.
What is the frequency range for Very High Frequency (VHF)?
30 MHz - 300 MHz
VHF is often used for television broadcasts and two-way radios.
What is the frequency range for Ultra-High Frequency (UHF)?
300 MHz - 3 GHz
UHF is used for mobile phones, satellite communications, and television broadcasting.
What is the frequency range for Super High Frequency (SHF)?
3 GHz - 30 GHz
SHF is commonly used for radar and satellite communications.
What is the frequency range for Extremely High Frequency (EHF)?
30 GHz - 300 GHz
EHF is used in advanced communication systems including some satellite communications.
How many total transmitters are used in HF Communications?
9 TOTAL
Includes 8 OT-198 Exciters (Broadband) and 1 OT-204 (Narrowband).
How many receivers are utilized in HF Communications?
18 R-2557’s
R-2557’s are used for receiving HF signals.
What types of antennas are used in HF Communications?
35ft Whip, 2 Twin Whip, 2 ATG Receive only, 2 Fan Wires
These antennas facilitate various communication needs.
What are the capabilities of HF Communications?
- Secure/Unsecure Voice/data
- Long haul, over the horizon
HF communications can support both secure and unsecure transmissions.
How many total transceivers are used in UHF Communications?
18 TOTAL
Includes 14 WSC 3v7, 2 WSC 3v11, 2 WSC 3v17.
What are the capabilities of UHF Communications?
- Line of Sight
- Have quick
- Satellite communications (SATCOM)
UHF is essential for immediate communication needs.
How many couplers are used in UHF Communications?
4 OA-9123
Couplers are necessary for connecting transceivers to antennas.
What types of transceivers are used in VHF Communications?
GRC-211 (2), GRC 171 (2)
Total of 4 transceivers for VHF operations.
What are the capabilities of VHF Communications?
- Line of Sight
- Mobile Comms (GREEN GEAR)
- Emergency Comms
- IAD (international air distress) 121.5 MHz
- MAD (military air distress) 243 MHz
VHF is crucial for various emergency and mobile communication needs.
What does SHF stand for in communications?
Super High Frequency
SHF is a frequency range in the electromagnetic spectrum used for various communication applications.
What is the nomenclature for the Navy Multiband Terminal used for SHF communications?
AN/WSC 9 V2 NMT
This terminal supports multiple frequency bands for communication.
What frequency bands does the AN/WSC 9 V2 NMT primarily support for IP services?
SHF, KA, & X frequency bands
These frequency bands are primarily utilized for IP services and plain old telephone systems (POTS).
What is the primary means for message traffic in SHF communications?
Command and Control official information exchange
This method is essential for secure and reliable communication.
What frequency band does the AN/WSC 9 V2 NMT support for EHF communications?
Q band
The Q band is specifically used for EHF communications.
What types of services does EHF communications provide?
Secure voice and data, secondary IP services
EHF is crucial for secure communications and offers additional services.
What are the data rate capabilities of EHF communications?
LDR, MDR, XDR
- LDR: Low Data Rate for voice
- MDR: Medium Data Rate for data/links
- XDR: Extended Data Rate for data/links and IP.
What is the SA-2112v6 RED SAS used for?
Electronically patch CRYPTO to RED phone
This system facilitates secure communication by linking cryptographic systems with voice communication.
What is the function of the SA-2112Av3 BLACK SAS?
Electronically patch RADIO to CRYPTO
This system links radio communications with cryptographic systems for secure data transmission.
What does DAMA stand for?
Demand Assigned Multiple Access
DAMA allows for efficient allocation of communication resources.
