Which term alerts the recipient as to who is sending the transmission?

Which term alerts the recipient as to who is sending the transmission?

• A. THIS IS
• B. ROGER
• C. WAIT OVER
• D. SAY AGAIN

Answer: (A)

The main idea is to identify who is transmitting at the start of every radio call. Saying “This is” explicitly introduces the sender, so the receiving station immediately knows which unit or person is speaking. After that, you normally state your call sign or unit, which clears up who is talking and helps route the message correctly. ROGER is an acknowledgment that you received a message, not an identification of the sender. WAIT OVER tells the other party to pause and wait for further communication, not who is transmitting. SAY AGAIN requests repetition of the last message, also not identification. So, the phrase that alerts the recipient as to who is sending is “This is,” because it establishes the source of the transmission right away.

The main idea is to identify who is transmitting at the start of every radio call. Saying “This is” explicitly introduces the sender, so the receiving station immediately knows which unit or person is speaking. After that, you normally state your call sign or unit, which clears up who is talking and helps route the message correctly.

ROGER is an acknowledgment that you received a message, not an identification of the sender. WAIT OVER tells the other party to pause and wait for further communication, not who is transmitting. SAY AGAIN requests repetition of the last message, also not identification. So, the phrase that alerts the recipient as to who is sending is “This is,” because it establishes the source of the transmission right away.