You look up a frequency table and all the listings end in either .0 or .5 kHz. What kind of emission is used with these frequencies?

Correct Answer: Option A — NBDP/SITOR

Frequencies ending in .0 or .5 kHz are characteristic of the ITU channel plan for NBDP/SITOR operations. These specific assignments facilitate the precise tuning required for digital data exchange, distinguishing them from voice channels which are typically centered on different offsets to accommodate the SSB emission characteristics.