Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
30 Cards in this Set
- Front
- Back
|
What is the range for HF?
|
2-29.9
|
|
|
What does HF stand for?
|
HIgh Frequency
|
|
|
What radios use HF?
|
PRC-150
MRC-148 |
|
|
What's the typical application for HF?
|
Radio line of sight & beyond/long range
|
|
|
what does VHF stand for?
|
Very high frequency
|
|
|
What is the operating frequency range for VHF?
|
30-88MHz and 116-150MHZ
|
|
|
What radios use VHF?
|
PRC 150
PRC 152 VRC 110 MRC 148 PRC 117 PRC 119 VRC 110 PRC 148 An/PRQ-7 |
|
|
What is the operating frequency range for UHF?
|
225-400MHz
|
|
|
What does UHF stand for?
|
Ultra high frequency
|
|
|
What radios use UHF?
|
PRC-117
PRC-152 VRC 110 PRC 148 PRC 153 AN/PRQ-7 |
|
|
What is the typical application for VHF?
|
30-88 Radio line of sight & relay/transmission
116-150 Critical line of sight |
|
|
What is the typical application for UHF?
|
Critical line of sight
SATCOM footprint |
|
|
What are the modes that SINCGARS radios offer to commanders?
|
SC plain text (PT), SC CT, FH PT, and FH CT.
|
|
|
When establishing CNR nets what must commanders consider?
|
the mission, availability, and capabilities of CNR communications equipment, electronic attack (EA) capabilities of adversary forces, and United States (US) national security policy. SC PT operations provide ease of operation while providing little or no security or protection. FH CT operations provide message traffic security and EA (jamming and direction finding [DF]) resistant transmissions. FH CT communication protects both the message and the sender
|
|
|
SINCGARS radios can store what?
|
SC frequencies and offsets
|
|
|
How are SC frequencies and offsets entered?
|
manually through the radio’s front panel keypad.
|
|
|
When operating in the FH mode, two of the SC presets are reserved for what?
|
the manual and cue channels
|
|
|
SINCGARS radios require what four data elements to communicate in the FH mode?
|
hopsets/lockouts, net identifiers (IDs), net sync date/time, and TSK
|
|
|
What are hopsets and lockouts?
|
hopset is the set of frequencies (2320 frequencies minus protected frequencies) on which an FH net hops. Hopsets are electronically loaded and stored in the radio. SINCGARS radios have the capability of storing an unique hopset in each preset FH channel. Lockouts provide frequency exclusions in conjunction with a hopset.
|
|
|
What is a net id?
|
a 3-digit number from 000 to 999 that distinguishes one FH net from another when all other FH data elements are the same. Unique net Ids may be stored in each FH preset channel.
|
|
|
Net IDs, embedded in the hopset data, are loaded how?
|
with a fill device or by
ERF and may be changed using the keypad on the front panel of the SINCGARS receiver-transmitter (except on ARC-210 radios). |
|
|
What is sync time?
|
Sync time is required for synchronization of the frequency hops. Sync time consists of the last 2 digits of the Julian date (SINCGARS Julian date) plus a 6-digit time (hours:minutes:seconds). Each station in the FH radio net must be within (+/- 4 seconds) of the net sync time to communicate
|
|
|
What is the TSK?
|
a generated variable that controls the pseudo-random FH pattern. A TSK must be loaded into the SINCGARS radio prior to opening an FH net. TSKs are electronically loaded into the radio with a fill device and, after net opening, TSK may be transferred by ERF
|
|
|
What is the Frequency Hopping-Master (FH-M) Mode?
|
Only one radio in each FH radio net will use this mode. The FH-M radio maintains the radio net’s sync time and transmits the ERF. Normally the designated NCS or alternate NCS will operate in the FH-M mode
|
|
|
CT operations require what?
|
a traffic encryption key (TEK). A key encryption key (KEK) is required for over the-air rekey (OTAR). TEK and KEK are electronically loaded and stored in the radio or external security equipment.
|
|
|
The TEK is used in what kind of operation & to do what?
|
CT operation and encrypts/decrypts operational voice and digital data transmissions.
|
|
|
What does KEK do?
|
encrypts/decrypts TEKs and is used for OTAR of TEKs. f. PT Operation. SINCGARS radios are also capable of PT operation (either SC or FH). When operating with radios that do not have a CT capability and/or are operating in PT, an army ground SINCGARS radio in the CT mode can monitor PT communications. A beep tone informs the SINCGARS operator that the incoming message is in PT rather than CT.
|
|
|
What are the three levels of security classification?
|
Top Secret
Secret Confidential |
|
|
What does SINCGARS stand for?
|
Single channel ground and airborne radio system
|
|
|
What does SINCGARS stand for?
|
Single channel ground and airborne radio system
|
