Hi,
Thanks for the info Borber. Just to have a overall picture of this receiver, so the FM signal goes in the input of the oscillator, goes in the LC tank circuit. If LC is tune to 100 MHz, and the FM carrier is 100Mhz, at the collector of the oscillator transistor will be the modulating signal from FM, due to additive effect in the LC tank.
And at this point, the FM signal (100MHz) will be mixing the sawtooth quenching signal around 50kHz. Thus, we have a AM, and FM signal component at the base of the transistor. where FM signal component will be our modulating signal at the collector, and the AM component will be turning on/off the oscillation.
But i still have some questions about it.
[1] Varying the VR2 of the quenching circuit will actually vary the quench voltage or frequency. I understand that changing the frenquency will effect the sensitivity. But how does it affect it? and what will happen if the quench voltage, Vp increases? (I think i has something to do with sensitivity also, just want some comfirmation)
[2]Superregenartive reciever, the term "regenerative" is actually referring to the quenching signal which turns on/off the oscillation?
[3]As borber have mention to have a AM modulated signal for input and we'll have the modulating signal. How come an FM reciever and recieve AM signal?
Thank you for you time, please correct me if i'm wrong.