Question T4B09
From subelement T4 - T4B
How is a specific group of stations selected on a digital voice transceiver?
Why is this correct?
Digital voice systems like DMR, D-STAR, and System Fusion organize stations into groups (talkgroups, reflectors, rooms) that share common interests or purposes. To join a specific group, you enter that group's unique identification code into your radio. This could be a DMR talkgroup ID number or D-STAR reflector code. CTCSS tones work for analog repeaters, not digital groups. Memory frequencies don't select groups. Automatic identification transmits your call sign but doesn't select groups.
Memory tip
Look for the action word 'entering' or 'programming' when digital mode questions ask about selecting or accessing groups. Digital systems require specific codes or IDs to route your signal to the right virtual channel, unlike analog systems that rely on frequencies and tones.
Learn more
Digital voice transceivers use 'code plugs' containing access information for repeaters and talkgroups. Think of talkgroup IDs as virtual room numbers in a digital hotel - you need the right room number to join the conversation. This programming enables worldwide communication through internet-linked repeater networks, extending your station's coverage far beyond local RF range through digital protocols.
Think about it
Why do you think digital voice systems use identification codes instead of simply relying on frequency selection like traditional analog repeaters?