A CB radio !!! You rialise that a "stock" one puts out about four watts. That's enough to transmit several MILES. The point is moot, anyway. There's no way you're gonna' make a CB into a decent FM transmitter. Here's why...

- Both driver and final transistors won't do well at that frequency. They may work, yet will be inefficient.

- The tuning networks would have to be replaced. That's several dozen components right there.

- You'll have to convert the AM rig to transmit FM.

- There's no easy way to generate the frequencies you want. Multiplying the 27 MHz output by three gives 81 MHz - TV channel 5. 27 x 4 give 108 MHz. That's a wee bit to close to the aircraft band for my comfort.

- Even if you tackle all of these issues, it won't be transmitting in stereo.

You're much better off buying a kit designed for transmitting FM stereo. Look online...they're out there.

Peace.

Marco