The following is FM radio reciever circuit from:
http://www.hqew.net/circuit-diagram/Small-FM-Radio-Circuit_8896.html

I do not intend to implement, but Surprised by the way the two transistors T1&T2 connected.
The tuned recieved FM signal inter the collector of T2 and out of its base to feed to the audio amplifier
It is the first time in my life watching that stage audio feed from the base of the transistor
Can you help me understand the work of those two transistors?
Thank you very much

 

I'm not sure, but it appears to be a regenerative design. Do other FM radios get quiet on a station when this circuit is tuned to the same station station?

If so it is definitely regenerative. Regenerative radios work by almost, but not quite, oscillating. This ups their gain enormously.

 

I guessing here, but I would venture to say that your signal isn't coming from the base, per se, but rather from the antenna (at the junction with R1). This signal is then feeding both the audio section, via C2, and back into the RF section, via T2.