Communications with an emission of F1B/J2B would typically have a channel spacing of?

The correct answer is 0.5 kHz because F1B and J2B emissions are related to single-sideband amplitude modulation (SSB AM) and single-sideband modulation (SSB). In the context of marine communication systems, using F1B/J2B emissions allows for efficient use of the radio spectrum. The recommended channel spacing for these types of emissions is indeed 0.5 kHz, which facilitates clear communications while minimizing interference between adjacent channels.

This spacing takes into account the bandwidth of the emissions and ensures that they can coexist without overlapping significantly. It’s particularly important in environments where multiple transmissions may occur, such as on maritime frequencies, as it helps prevent communication errors and maintains the clarity of signals over distance.