Question T2A02
From subelement T2 - T2A
What is the national calling frequency for FM simplex operations in the 2 meter band?
Why is this correct?
146.520 MHz is the designated national calling frequency for FM simplex operations in the 2-meter band. This frequency serves as a common meeting point where stations make initial contact before moving to another frequency for extended conversation. Option B (145.000 MHz) is within the 2-meter band but not the calling frequency. Options C and D are in the 70-cm band (432.100 MHz and 446.000 MHz), with 446.000 MHz being the national calling frequency for that band, not 2-meters.
Memory tip
Remember the pattern: calling frequencies end in .52 for VHF bands. The '52' suffix appears consistently across amateur radio calling frequencies, making it easier to recall the correct frequency when you know the band.
Learn more
The national calling frequency functions like a radio town square—a place to listen for activity and make initial contacts. In emergency communications, this frequency becomes critical when repeaters fail, allowing direct station-to-station communication within simplex range. Understanding calling frequencies supports efficient frequency coordination and helps maintain amateur radio's tradition of self-policing spectrum use through established operating practices.
Think about it
Why do you think amateur radio established specific calling frequencies rather than allowing random contacts across the entire band?