Module 4
Terms
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- What is the range for the frequencies
-
LF 30-300 kHz
HF 3-30 MHz
VHF 30-300 MHz
UHF 300 MHz-3 GHz
SHF 3-30 GHz
EHF 30-300 GHz - Where do you use LF
- long range directgion finding
- Where do you use HF
- mobile and maritime units
- Where do you use VHF
- aeronautical radio navigation and comms, radar, mobile comm
- Where do you use UHF
- line of sight comm short range
- Where do you use SHF
- SATCOMM
- Where do you use EHF
- SATCOMM with anti jam
- What is the AN/URT-23-D
- HF Transmitter
- What is the R-2368-URR
- HF receiver
- What is the SA-2112
- Red patch panel
- What is the SB-983
- Black patch panel
- What is duplex communication
- Able to transmit and receive simultaneously
- What is simplex communication
- Provides a single channel of frequency
- What does the UHF/HF relay method permit?
- Long range uninterrupted communication during periods of HERO
- Describe OTAT
- Transmitting key varible over secure comm channel for use by crypto other than device that recieved transfer crypton
- Describe OTAR
- Transmitting key varible over a secure comm channel for use only by the receiving crypto device
- What is the international worldwide SAR voice distress frequency
- 123.1 MHz
- What is the international CW/MCW distress freq
- 500 kHz
- What is the international voice distress freq
- 2182 Khz
- What is the AN/SSQ-88
- Quality Monitoring set that contains equipmetn for measuring and analyzing signals sampled by sensors installed in each communications circuit interface
- What are the 3 types of satellites used in the Navy
-
GAPFILLER
FLTSATCOM
LEASAT - What is an active satellite
- Acts as a repeater and amplifies the signal
- What is a passive satellite
- Reflects the signals back to earth
- What is the AN/WSC-3
- UHF SATCOM transceiver
-
T or F
NAVMACS serves as an automated shipboard terminal for interfacing with CUDIXS (shore-based) and the FBS - True
- Why was DAMA developed
- To mulitplex serveral subsystems or users on one satellite channel
- What is reciprocity
- Ability of an antenna to both transmit and receive electromagnetic energy
- What is the directivity of an antenna
- Width of the readiation beam pattern
- What is omnidirectional
- When an antenna radiate and receive equally well in all directions except off the ends
- What is bidirectional
- When an antenna radiate or receive efficiently in only two directions
- What is a dummy load
- Used to tune a transmitter without causing unwanted radiation
- What is another name for a half wave antenna
- Dipole
- What is another name for a quarter wave antenna
- Marconi antenna which is omnidirectional
- What is the most common length of the whip antenna that is used
- 35 foot
- What type of antenna is the AT-150/SRC
- UHF antenna
- What is the offical name of the egg beater antenna
- AS-2815/SSR 1 (used for SATCOMM)
- What are the SRA 56-57-58 and what are they used for
- Antenna couplers are used to comment one antenna to a transmitter or receiver and electronically tunes the signal to the antenna.
- What is the OA-9133
- Antenna multicoupler