ARRL Technician Practice Exam

What is the national calling frequency for FM simplex operations in the 70 cm band?

1. 446.000 MHz

2. 448.000 MHz

3. 440.000 MHz

4. 444.000 MHz

The correct answer is: 446.000 MHz

The national calling frequency for FM simplex operations in the 70 cm band is 446.000 MHz. This frequency serves as a primary channel for amateur radio operators to initiate calls and make contacts. It is widely recognized and used by the amateur community for simplex communication, meaning direct communication between stations without the use of a repeater. The allocation of 446.000 MHz is prominent not only because it allows for straightforward communication but also because it is designated in the amateur band plan. This helps ensure that operators are aware of a common frequency to use for casual conversations, emergency communications, or coordination. Other frequencies listed do not serve this specific national calling purpose in the same way; they might be used for different operational aspects or are utilized for repeater outputs and other types of communication, but they are not designated as the primary calling frequency for simplex operations in the 70 cm band.