ARRL Technician Practice Exam

What is the most common repeater frequency offset in the 2 meter band?

1. Plus or minus 600 kHz

2. Plus or minus 300 kHz

3. Plus or minus 150 kHz

4. Plus or minus 1 MHz

The correct answer is: Plus or minus 600 kHz

In the 2 meter amateur radio band, the most common repeater frequency offset is plus or minus 600 kHz. This standard offset is utilized to reduce interference and facilitate effective communication between simplex stations and repeater stations. When a repeater receives a signal on a specific frequency, it simultaneously retransmits that signal a fixed offset away, typically 600 kHz higher or lower, depending on the mode of operation. This is particularly important in the 2 meter band as it helps to ensure that the input and output frequencies of the repeater do not interfere with one another or with other communications in the area. While other frequency offsets are used in different bands or for specific purposes, such as 300 kHz or 1 MHz, they are not the standard for the 2 meter band. Understanding this standard helps operators effectively communicate and navigate the amateur radio environment, ensuring their transmissions can be received by the designated repeater and allowing for clear, organized interactions on the airwaves.