I noticed that on some higher-end transceivers, the panadapter/waterfall is still being displayed during transmission. How is this possible? If the panadapter is part of the receiver, it should be disconnected from the antenna during transmission, and if it was using some sort of directional coupler or tap, it would lose way too much signal to be of any use.
Is there some special circuitry at play here, or is it only a display trick?