While working on my same cobra rfx75 radio i had an idea that works pretty well. I designed a small power Mic circuit on a piece of Vero board to inject in the Mic audio wire inside theradio. It gets freakin loud! If i wanted to place the volume knob in place of the delta tune pot what should i do? I know rf gain its easy to replace but delta tune seems useless. Do i need to connect any of the wires once remove?
Also the power gain stage i added gets to loud. Is there a way to tone it back Some? 2 2n3904. It's it gets quite abit of feedback when it's dimed.. maybe a spot on the board to feed it less voltage? Or redesign?
Also the power gain stage i added gets to loud. Is there a way to tone it back Some? 2 2n3904. It's it gets quite abit of feedback when it's dimed.. maybe a spot on the board to feed it less voltage? Or redesign?