Hello to all,
I am trying to get this circuit to produce rf on 433.92Mhz. I am using an rfm0301a resonator. L1 is the pcb trace antenna. I have injected a 1k square wave into R3 and all I see on my scope at L1 is my square wave but on the spectrum analyzer I have nothing. From the datasheet R2 is supposed to be 470 Ohms but a friend said make it 10. Looking at the datasheet I thought this circuit was basically a colpitts and calculating L/C/F I am way off. Any suggestions?
I am trying to get this circuit to produce rf on 433.92Mhz. I am using an rfm0301a resonator. L1 is the pcb trace antenna. I have injected a 1k square wave into R3 and all I see on my scope at L1 is my square wave but on the spectrum analyzer I have nothing. From the datasheet R2 is supposed to be 470 Ohms but a friend said make it 10. Looking at the datasheet I thought this circuit was basically a colpitts and calculating L/C/F I am way off. Any suggestions?
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