What is the primary function of the oscillator in a continuous wave (CW) transmitter?

The primary function of the oscillator in a continuous wave (CW) transmitter is to generate the RF (radio frequency) carrier at a preset frequency. This is crucial for the transmission of radio signals, as the carrier wave carries the information that must be communicated over the airwaves. The oscillator creates a consistent and stable frequency that modulates the signal, allowing for effective transmission and reception by matching the frequency of the transmitting and receiving equipment.

Other components in a transmitter may handle the modulation of the signal or the amplification, but the oscillator's sole role is to produce that core RF carrier frequency. By ensuring that this frequency is stable and precise, the oscillator allows for more effective communication over various distances and conditions.