I'm trying to build an FM transmitter (don't worry, I'm legal) and I found this schematic:

http://www.elecirs.com/wireless/2Km_FM_Transmitter_Circuit_Diagram_725.html

Can someone knowledgable on this type of circuit tell me if they think it would work?

 

Quite possibly...but with only one low q tuned circuit in the whole thing it's likely to transmit spurious signal all over the place, inclusing some AM I expect.

 

wont be as good as my transmitter ive made to boost my home wi fi.....

 

Looks pretty cool , sheldons . Does it work?

 

Yes. I found a program that calculates a parabolic director made of aluminum foil and cardboard. A peanut can is similar.

 

I have not confirmed their calculations but saw a proof once that a Pringles can provides optimal coupling.

 

Calculations, proofs, programs.

How about an answer to Shagas' question?

 

It will probably work, but it's going to be annoyingly unstable, i.e. moving a hand near the antenna will shift the frequency, as well as any variation in the supply voltage.

 

It will probably work, but it's going to be annoyingly unstable, i.e. moving a hand near the antenna will shift the frequency, as well as any variation in the supply voltage.

Right answer to the wrong question ! LOL Glad I'm not the only one who does that sort of thing .

 

Right answer to the wrong question ! LOL Glad I'm not the only one who does that sort of thing .

I am answering the OP's question with an on-point relevant answer, your comment puzzles me?

 

Yes, that is probably the world's oldest and best-proven DIY FM transmistter (I first saw it in a 1966 Popular Electronics Magazine and have made many since. It is very forgiving circuit and has never disappointed. Yes, hand capacitance can cause frequency shift.

If you use this variation, you can largely escape the frequency shift problem.
http://cappels.org/dproj/FMVFO/fmvfo.htm

 

Calculations, proofs, programs.

How about an answer to Shagas' question?

Ok..It was ME that got confused Shagras's question was "does it work" If I had read more carefully I would have seen that it as in fact directed to ErnieM. Your response was spot on and I saw it was an answer to the OPs question. humble grovelling. lesson learned, I MUST read Very carefully...