Anybody in the know about transistor upgrades on a RCI 29XX. What they are? What they do? Is the HI FI mod some kind of snake oil? Not slamming the guy! Just curious.
If you mean are the voltage regulator and AM regulator transistor upgrades real? Sure; is that surprising? This is not news. The hifi upgrade is just changing out a few caps to different values. It can be done to both the transmit and the receive. Those are some mods I might do to certain radios. Done them and they work well. Just an improvement if you like that kind of thing, and I do.