funkciq 3 test 3

Какво

означава съкращението EPIRB?

• Emergency

  Position Indicating Radio Beacon.

• Emergency

  Position Indication Radio Buoy.

• Electronic

  Purpose If Rescue Begins.

• Electronic

  Pressure Indication Radar Buoy.

Как са

подава сигнал за бедствие по радио-телефония?

• SOS

• MAYDAY

• PAN PAN

• SECURITE

Честотите

се измерват в:

• Hertz

• Metres

• Seconds

• Micro-seconds

Честотата

156,8 MHz се използва за :

• NAVTEX

• COSPAS-SARSAT EPIRBs

• DSC

  calls

• VHF

  channel 16

Честотата

121,5 MHz се използва за :

• COSPAS-SARSAT EPIRBs

• INMARSAT

  E EPIRBS

• SART

  transpondeur

• DSC VHF

  calls

Честота

от 150 MHz има дължина на вълната:

• 2метра

• 20метра

• 200метра

• 2000метра

МF

комуникацията се осъществява обикновено от:

• space

  wave

• sky wave

• ground

  wave

• none of

  the above

Съобщения

изпратени с INMARSAT C се таксуват:

• on the

  number of kilobits of information transmitted per block of 256 bits

• on the

  number of kilobits of information transmitted per block of 1024 bits

• on the

  basis of a three minute minimum charge with one minute incremental steps

• on the

  basis of a six second minimum charge with six second incremental steps

Сlass of

emission J3E :

• Radiotelephony

  - Single sideband suppressed carrier

• Radiotelephony

  - Single sideband full carrier

• Radiotelex

  and DSC - Frequency shift keying of carrier with error correction

• Radiotelex

  and DSC - Phase modulation

Сlass of

emission H3E е :

• Radiotelephony

  - Single sideband suppressed carrier

• Radiotelephony

  - Single sideband full carrier

• Radiotelex

  and DSC - Frequency shift keying of carrier with error correction

• Radiotelex

  and DSC - Phase modulation