🔍 Key Concepts

• Meaning of the first symbol in an ITU emission designator (type of modulation, e.g., A, H, J, F). • How AM with full carrier (DSB), SSB suppressed carrier, SSB with carrier (like reduced carrier), and FM are labeled in radio emission designations. • Relationship between DSB/SSB/FM and their corresponding emission letters.

💭 Think About

• Match each described mode (AM‑Voice DSB, SSB‑Voice without carrier, USB‑Voice with carrier, FM‑Voice) to the correct first letter of the emission designator before you look at the answer choices. • Ask yourself: which emission letters are used for double‑sideband AM with carrier, for single‑sideband with suppressed carrier, and for single‑sideband with some carrier present? • After identifying the correct sequence of emission letters for the four modes, compare that sequence straight across to the choices and see which one matches exactly.

✅ Before You Answer

• Be sure you know which letter corresponds to DSB AM with full carrier before eliminating any options. • Confirm which emission letter means SSB with no carrier at all (suppressed carrier) versus SSB with a carrier present—this is the key to avoiding a mix‑up. • Verify that all answer options end with F3E for FM‑Voice and understand why that part is common, so your real work is sorting out the first three items.