oasis4355
Member level 3
fm transmitter circuit
Hi,
I'm trying to understand this circuit, on the oscillator part.
https://electronics-diy.com/tx200.php
What's the function of L1? To my understanding it's to control the transmitting frequency. Since I want to transmit in 95Mhz,
and according to the formula: f=1/( 2*pi*srt[LC] )
where C=15pF
L=.....
Please correct if I'm wrong. If this is not the case, which parameter should i change to transmit in 95Mhz.
2nd question, for unlicense FM transmission, the max power that we can transmit is 1W, please correct me if i'm wrong.
Thanks in advance.
Bruce
Added after 13 minutes:
Another thing,
I'm trying to build an antenna for the circuit above, or should i just use a normal wire will do? like a dipole antenna
Bruce
Hi,
I'm trying to understand this circuit, on the oscillator part.
https://electronics-diy.com/tx200.php
What's the function of L1? To my understanding it's to control the transmitting frequency. Since I want to transmit in 95Mhz,
and according to the formula: f=1/( 2*pi*srt[LC] )
where C=15pF
L=.....
Please correct if I'm wrong. If this is not the case, which parameter should i change to transmit in 95Mhz.
2nd question, for unlicense FM transmission, the max power that we can transmit is 1W, please correct me if i'm wrong.
Thanks in advance.
Bruce
Added after 13 minutes:
Another thing,
I'm trying to build an antenna for the circuit above, or should i just use a normal wire will do? like a dipole antenna
Bruce