🔍 Key Concepts

• Meaning of TDMA in digital communications • How multiple users share the same radio frequency in some digital systems • Difference between separating by frequency, code, or time

💭 Think About

• First, expand the acronym TDMA and think about what the key word in the middle suggests about how access is shared. • Ask yourself: in TDMA, do different users transmit on totally different frequencies at the same time, or do they transmit at different moments on the same frequency? • Compare how analog VHF voice channels separate conversations versus how a digital system might do it more efficiently.

✅ Before You Answer

• Be clear on what the letters in TDMA stand for before you choose. • Confirm whether TDMA is about dividing the frequency band or dividing when each user can talk. • Eliminate any options that clearly relate to analog channel separation methods rather than digital time‑sharing.