adjustable 1 watt FM transmitter?
Posted: Mon May 24, 2004 11:40 pm
Hi
I've built a 1 watt (fixed) FM transmitter that I would like to modify for adjustable power output. (I want to LOWER the RF power output, crazy I know!)
This circuit design utilizes two transistors, the second feeding power to the antenna.
I'm guessing, if I limit the supply voltage to the power transistor, it would reduce the output of the transmitter. Can anyone comment?
I don't want to limit the voltage for the entire circuit because of the PLL circuitry.
Thanks for your help!
Bob
I've built a 1 watt (fixed) FM transmitter that I would like to modify for adjustable power output. (I want to LOWER the RF power output, crazy I know!)
This circuit design utilizes two transistors, the second feeding power to the antenna.
I'm guessing, if I limit the supply voltage to the power transistor, it would reduce the output of the transmitter. Can anyone comment?
I don't want to limit the voltage for the entire circuit because of the PLL circuitry.
Thanks for your help!
Bob