RF/FM transmitter

[bsman]

hi all,
my project involves using an FM transmitter.

my project assumes the received audio signal has already gone through an FFT (i plan to do this in software with a dsp).  however, my dsp chip only operates at 40 MHz.  I was wondering what kind of RF transmitter i should use that would allow me to tune this signal to a carrier fequency between 88 and 108 MHz (FM radio standard).

basically, i need an RF transmitter that assumes the signal has already gone thru a FFT, but has not been tuned to a carrier frequency.

any suggestions?

i plan on modifying a circuit that i found online here:

[johnson 2]

HAM