ARRL Technician Practice Exam

What is required in place of on-air station identification when sending signals to a radio control model using amateur frequencies?

1. A continuous transmission

2. A label indicating the licensee's name, call sign and address must be affixed to the transmitter

3. An ID card displayed on the model

4. A broadcast announcement every hour

The correct answer is: A label indicating the licensee's name, call sign and address must be affixed to the transmitter

When sending signals to a radio control model using amateur frequencies, the requirement is to have a label affixed to the transmitter that indicates the licensee's name, call sign, and address. This is necessary because traditional on-air station identification, which typically involves announcing your call sign during a transmission, is not practical for remote-controlled models. Instead, the label provides a means of identifying the operator of the transmission while fulfilling regulatory requirements. The other options do not align with the regulations governing amateur radio operations. Continuous transmissions and broadcast announcements are not suitable alternatives to identification, as they could lead to interference and are not mandated in this specific circumstance. An ID card displayed on the model does not provide the relevant information directly to anyone observing the operation of the model, making it ineffective compared to a label on the transmitter. Thus, affixing a clear, accessible label is the appropriate method to ensure compliance with regulatory standards for identification while operating a radio-controlled model.