Which option is the starting call sign for a radio call?

• A. Receiver
• B. Caller
• C. Base station
• D. Operator

Answer: (A)

Directing a radio call to a specific station starts with addressing the station you want to reach by its call sign. The starting call sign is the receiver because the message is intended for that particular station, and using its sign at the outset ensures it is unambiguous and can respond promptly. For example, if you want to contact a station with a call sign like RECV-01, you initiate the contact by addressing RECV-01 so that the recipient knows the transmission is meant for them and can establish the exchange. This approach helps avoid confusion and guarantees proper routing of the communication. The other terms refer to the person initiating the call or to a general station type, not the specific target, so they don’t constitute the starting call sign.