Newman-Kees Principal Consulting Engineer Frank Hertel says a friend recently brought him an old LPB 30-Watt AM transmitter for repair. It’s a good low-power transmitter, but this one had been abused.

I am trying to look at raw Ethernet waveforms on my oscilloscope, but I have no idea how to set it up: I have a pair of RJ45-to-SMA adapter boxes that allow me to carry a set of Ethernet signals over ...