Question
What is a “talkgroup” on a DMR repeater?
Answer Options
- A) A group of operators sharing common interests
- B) A way for groups of users to share a channel at different times without hearing other users on the channel
- C) A protocol that increases the signal-to-noise ratio when multiple repeaters are linked together
- D) A net that meets at a specified time
Correct Answer: B
Explanation
DMR (Digital Mobile Radio) is a digital mode that utilizes time-division multiple access (TDMA), allowing two completely independent conversations (or Talkgroups) to share the exact same physical frequency pair at the same time. A Talkgroup is a logical communication path that separates users.
It is a way for groups of users to share a channel at different times without hearing other users on the channel. When you select a talkgroup (T4B09), your radio filters out all audio that isn’t addressed to that specific group, enabling multiple simultaneous, distinct conversations on one repeater.
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