The repeater frequencies listed below can prove useful for long-distance communications, when you are beyond line-of-site reception.

DO NOT use repeater frequencies for routine in-flight communications. Simplex operation is almost always sufficient when you are in the air, because you'll be line-of-sight with nearly anyone you're trying to reach.

Repeaters are often maintained and operated by ham radio clubs, at their own expense. So when you do use a repeater, keep your transmissions as brief as possible.