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In the US, the common (though not universal) repeater offsets are ±600 kHz in the 2m band and ±5 MHz in the 70cm band. How and why did these offsets come to be standard for amateur repeaters? The minimum simplex channel spacing is much less than the repeater offset convention.

As an example, spacing between FRS channels and GMRS channels, both near the 70cm band, is 250 kHz. Is there a reason why a smaller interval is undesirable, or a larger interval is advantageous?

In the US, the common (though not universal) repeater offsets are ±600 kHz in the 2m band and ±5 MHz in the 70cm band. How and why did these offsets come to be standard for amateur repeaters? The minimum simplex channel spacing is much less than the repeater offset convention.

As an example, spacing between FRS channels and GMRS channels, both near the 70cm band, is 25 kHz. Is there a reason why a smaller interval is undesirable, or a larger interval is advantageous?

In the US, the common (though not universal) repeater offsets are ±600 kHz in the 2m band and ±5 MHz in the 70cm band. How and why did these offsets come to be standard for amateur repeaters? The minimum workable offset is much less than the convention.

As an example, spacing between FRS channels and GMRS channels, both near the 70cm band, is 250 kHz. Is there a reason why a smaller interval is undesirable, or a larger interval is advantageous?

In the US, the common (though not universal) repeater offsets are ±600 kHz in the 2m band and ±5 MHz in the 70cm band. How and why did these offsets come to be standard for amateur repeaters? The minimum simplex channel spacing is much less than the repeater offset convention.

As an example, spacing between FRS channels and GMRS channels, both near the 70cm band, is 250 kHz. Is there a reason why a smaller interval is undesirable, or a larger interval is advantageous?