The name for emissions produced by switching a transmitter's output on and off is CW.
The usual bandwidth of a single-sideband amateur signal is between 2 and 3 kHz.
The usual bandwidth of a frequency-modulated amateur signal is between 10 and 20 kHz.
Splatter interference is caused by the overmodulation of a transmitter.
The frequency of a harmonic as compared to the desired transmitting frequency is exactly two, or three, or more times the desired frequency.
If you change your transceiver's microphone from a mobile type to a base station type you should make an on-the-air radio check to ensure the quality of your signal. (to make sure you are not creating splatter interference or overdeviating.)