medwatt
Newbie level 5
Hello,
I want to build a system that can transmit in the FM band. I have already built my oscillators because I want to transmit at more than one frequency (not simultaneously). Now, what I want is a simple FM modulator that takes in the carrier from my oscillator and baseband audio signal.
I've seen numerous circuits on the net for FM transmitters but they all have in-cooperated oscillators (tank circuit) which is at the collector of an rf transistor and the baseband signal at the base. Seems clear enough but not what I want.
I wonder if someone can refer me to a simple laboratory circuit that may be of use to me, noting complex because where I live I find it toilsome to get components.
Thank you.
I want to build a system that can transmit in the FM band. I have already built my oscillators because I want to transmit at more than one frequency (not simultaneously). Now, what I want is a simple FM modulator that takes in the carrier from my oscillator and baseband audio signal.
I've seen numerous circuits on the net for FM transmitters but they all have in-cooperated oscillators (tank circuit) which is at the collector of an rf transistor and the baseband signal at the base. Seems clear enough but not what I want.
I wonder if someone can refer me to a simple laboratory circuit that may be of use to me, noting complex because where I live I find it toilsome to get components.
Thank you.