How to convert 10 VDC to VAC at a high frequency, say 10 MHz? VACpp can be +-10V or +-5V.
You want something called a oscillator. It is powered from DC, and produces AC output, usually a sine or square wave. For the case of 10 MHz, you can use a resonant design since the components can be physically small. RF transmitters are examples of circuits that take DC power in and AC at a specific frequency at substantial power.