My knowledge of electronics is confined to sub RF circuits, so what might work for audio (one of my other interests) might not work at these frequencies. Basically I want to be able to reduce the power output of my vtx so that I can do a range check (nice to have a way of checking growing collection of cp antennas). However since the power output is built into the 5.8ghz Chinese board I'm using I was thinking of just reducing the input signal. Ie turning the "volume" down on the input signal so the output signal is not as strong. However since I have no idea about the type of signal that the signal wire carries from the camera to the vtx, I'm not sure how to reduce it's power effectively? Would a simple voltage divider circuit work? (20k pot that i have lying around) Or would i need some sort of filter circuit? Any ideas before I just start soldering sh*t to my vtx in a trial and error type of experiment would be greatly helpful. My current method of hiding my fpv plane behind various bushes to reduce the signal is not very precise or repeatable
Thanks
Simon.