What type of signals are used to conduct an SSB two-tone test?

The correct answer involves using two non-harmonically related audio signals for conducting an SSB (Single Sideband) two-tone test. This approach is critical for testing the linearity and efficiency of an SSB transmitter.

In the context of an SSB two-tone test, the purpose is to evaluate the transmitter’s capability to handle signal distortions and intermodulation products that might occur when transmitting audio signals. Non-harmonically related signals are important because they help to assess how the transmitter responds to two distinct frequencies that are not related by simple integer ratios, allowing for a comprehensive evaluation of how well the transmitter can handle complex signal interactions.

Using harmonically related signals would not effectively tax the linearity of the system, as they would reinforce certain behaviors of the transmitter rather than reveal potential weaknesses or issues stemming from intermodulation distortion. Therefore, non-harmonically related audio signals provide a more accurate representation of real-world transmission conditions, making it the suitable choice for an SSB two-tone test.