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

In the 2 meter band, the most common repeater frequency offset is indeed plus or minus 600 kHz. This allows for effective communication, as it helps to minimize interference between different repeater systems that might be operating close together.

When using a repeater, the transmitting frequency is typically offset from the receiving frequency to ensure that the repeater can receive incoming signals while simultaneously transmitting its output signal. The 600 kHz split is standard for FM repeaters on the 2 meter band, facilitating a coordinated and organized use of the frequency spectrum among amateur operators.

Understanding this offset is crucial for setting up a radio and accessing repeater systems correctly, ensuring that operators can communicate without causing interference to others on the band. The other mentioned options do not represent the standard configurations for repeater offsets in the 2 meter band as widely recognized in amateur radio operations.