how to calculate the exact frequency of this FM transmitter?

firashelou:
SirNickity well yes your totally right, but i did read some theories and i have an idea about but i am sure i have missed a big step but i am not sure which one because when it comes to practical things, it's a mess and i feel totally confused any suggestion of what i must really look for ?

Haha.. welllll, no, because I have no clue what I'm doing with RF either. :wink:

Mike's suggestion seems like a good step though. Shelve the transmitter for now. Build a kit or two, and when you're feeling more confident, maybe try and build a radio receiver from scratch. AFAIK, you don't need a license to receive radio anywhere, and you'll know if it works because you get a signal. (With a transmitter, you have to have a compatible receiver to know it worked -- which is two conditions instead of one.)