System similar to what you mentioned regarding the gain compensation/distribution, HPF/BPFs, RX overload, PTT, and additional signal path sources and output routing (incl. looping back): http://no3m.net/index.php?page=signal-processor
Has an on-board embedded MPU, but a header can be used w/ switches for manual control. 73/HNY - Eric NO3M > If it were the 'ideal' thing, there'd be a box with a matrix of switches (A x > B), gain blocks that could be put in/out of the circuit, BPFs that could be > put in and out, 'muting' of any RX output that is connected to a transmitter > that is transmitting, RX overload protection, and some general purpose inputs > to select the 'configuration'. Probably a PIC to run it, with a nice GUI app > to configure it. > > > - Brian N9ADG > _______________________________________________ UR RST IS ... ... ..9 QSB QSB - hw? BK