This question has probably been answered before but here goes I am looking for a small,simple but reliable cor\cos switch circuit so that I can take a high cor\cos signal and convert it to a low.
I am doing a project in which the most reliable cor\cos is at 5 volts but the PTT goes to ground, so I need to take a high signal to ground for keying the TX radio. Also if the receive radio looses power the TX radio wont key up. This project will be running on solar power. Thank for your time Steve
