Total posts : 45366
Hi Greg,
I assume you are looking that the schematic for the Ramsey FM-25A. I just looked and it appears that R19 does establish the base drive for Q2 and perhaps affects the output power. It sure would not hurt experiment by changing this R but I think a better approach would be to attenuate the output after L3 at the antenna connection. My reason for this is that an amplifier can be “starved” for an input signal and could produce distortion, though this appears to be a Class A amplifier and it may not matter what the signal input is. Though this tx. has a LP filter on the output, it may not be sufficient to supress harmonics unless driven with the signal strength other than for which it is designed. Try it and let us know what you find.
By the way, is anyone else seeing red when viewing the posts text. I find it very annoying but maybe it is just my browser being wierd.
Neil
