|I am thinking of using a 12C508 with it's internal oscillator and
|outputing a square wave of maximum frequency(~500kHz).  Then,
|I'd like to pick one of the harmonics with a discrete multiplier cct,
|and drive an indirect FM cct.  Modulation codes will also come
|from the PIC.

Although it would not be suitable for high data rates,
someone awhile ago described a 16C5x-based transmitter
they'd designed for 27MHz.  Used a PIC, two caps, a
crystal, and a short wire for the antenna.  *THAT'S IT*.
The PIC's clock rate was "pushed" to 27MHz and its xtal
oscillator used to drive the antenna.  The signal was
gated by using a combination of SLEEP and watchdog wake-
ups.

Cute hack, huh?