So what. A modern conventional radio is just a SDR in a box with a front panel. Assuming that's true, it has nothing to do with ham radio. I'm not arguing about anything, but your statement is a non sequitur. Since you seem to admit that a SDR rig can't be repaired at home, you are actually justifying my claim that older analog rigs with discreet parts are superior when it comes to maintainability. I don't believe broadcasters are yet running SDR transmitters.