Home » Practical Operating Knowledge » 4 A repeater operating with a "positive 600 kHz split":   a.   listens on a frequency 600 kHz higher than its designated frequency   b.   transmits on a frequency 600 kHz higher than its designated frequency   c.   transmits simultaneously on its designated frequency and one 600 kHz higher   d.   uses positive modulation with a bandwidth of 600 kHz