How is a specific group of stations selected on a digital voice transceiver?
The correct answer is C: By entering the group's identification code. On a digital voice transceiver (like DMR, D-STAR, or System Fusion), you select a specific group of stations by entering the group's identification code (talkgroup ID, reflectors, etc.). Each group has a unique ID number that you program or select.
Digital voice systems organize communications into groups (talkgroups in DMR, reflectors in D-STAR, etc.). Each group has a unique identification code. When you want to communicate with a specific group, you enter or select that group's ID code. Your transmissions are then routed to that group, and you receive transmissions from that group. This is how digital voice systems organize and separate different conversations and user groups.
Exam Tip
Select digital group = Enter group ID. Remember: On digital voice transceivers, you select a specific group by entering the group's identification code (talkgroup ID, etc.).
Memory Aid
"**S**elect **D**igital **G**roup = **E**nter **G**roup **I**D (think 'SDG = EGI')"
Real-World Application
You're using a DMR radio and want to communicate on talkgroup 3100 (a regional talkgroup). You program talkgroup 3100 into your radio's code plug and select it. When you transmit, your signal is routed to talkgroup 3100, and other operators monitoring that talkgroup hear you. The group ID (3100) determines which group of stations you're communicating with.
FCC Part 97.205Key Concepts
Why Other Options Are Wrong
Option A: Incorrect. While frequencies might be stored in memory, group selection is about the group ID, not just the frequency. Digital systems use both frequency and group ID.
Option B: Incorrect. CTCSS tones are for analog repeaters, not for selecting digital voice groups. Digital systems use group ID codes.
Option D: Incorrect. Automatic identification is a feature that identifies your station, but it doesn't select which group you're communicating with.
题目解析
The correct answer is C: By entering the group's identification code. On a digital voice transceiver (like DMR, D-STAR, or System Fusion), you select a specific group of stations by entering the group's identification code (talkgroup ID, reflectors, etc.). Each group has a unique ID number that you program or select. Digital voice systems organize communications into groups (talkgroups in DMR, reflectors in D-STAR, etc.). Each group has a unique identification code. When you want to communicate with a specific group, you enter or select that group's ID code. Your transmissions are then routed to that group, and you receive transmissions from that group. This is how digital voice systems organize and separate different conversations and user groups.
考试技巧
Select digital group = Enter group ID. Remember: On digital voice transceivers, you select a specific group by entering the group's identification code (talkgroup ID, etc.).
记忆口诀
**S**elect **D**igital **G**roup = **E**nter **G**roup **I**D (think 'SDG = EGI')
实际应用示例
You're using a DMR radio and want to communicate on talkgroup 3100 (a regional talkgroup). You program talkgroup 3100 into your radio's code plug and select it. When you transmit, your signal is routed to talkgroup 3100, and other operators monitoring that talkgroup hear you. The group ID (3100) determines which group of stations you're communicating with.
错误选项分析
Option A: Incorrect. While frequencies might be stored in memory, group selection is about the group ID, not just the frequency. Digital systems use both frequency and group ID. Option B: Incorrect. CTCSS tones are for analog repeaters, not for selecting digital voice groups. Digital systems use group ID codes. Option D: Incorrect. Automatic identification is a feature that identifies your station, but it doesn't select which group you're communicating with.
知识点
Digital voice, Talkgroups, Group ID, Digital radio
Verified Content
Question from official FCC Technician Class question pool. Explanation reviewed by licensed amateur radio operators.