The best way to test the MF-HF SITOR (NBDP)...

The best way to test the MF-HF SITOR (NBDP)...

Question 1 of 27070wZyCVMGF3M5AFcDIu37J

The best way to test the MF-HF SITOR (NBDP) system is:

Question 1 of 27070

Q

The best way to test the MF-HF SITOR (NBDP) system is:

🔍 Key Concepts

• SITOR/NBDP (Narrow-Band Direct Printing) functions and how it communicates • Difference between ARQ (Automatic Repeat reQuest) and FEC (Forward Error Correction) modes • Role of coast stations and answerbacks in verifying correct operation

💭 Think About

• Which option actually confirms that BOTH the transmitter and receiver (and processors) of the NBDP system are working, not just that you can radiate a signal? • How does an ARQ call normally operate in real service, and what is exchanged between ship and coast station when the link is established? • Which choice most closely matches the proper, real‑world operational test procedure recommended for NBDP systems?

✅ Before You Answer

• Verify which mode, ARQ or FEC, provides a two‑way, automated exchange that proves end‑to‑end system integrity. • Check which options specifically involve a coast station, as used in normal NBDP service. • Confirm which choice mentions an automatic exchange of answerbacks, and think about what that proves about the system’s performance.