Profile: Signalcrafters Tech, Inc. deals with instrumentation and communications products. The model SC630 PLC line simulator is used to simulate the coupling capacitor and transmission line impedance in power line carrier system. It allows the line tuner to be tuned and tested before the coupling capacitor and transmission lines are connected. It has selectable resistors and capacitors to allow the technician to easily test a line tuner. Our loop back receiver allows remote testing and diagnosing of telecommunication networks. This includes leased telephone lines and microwave paths. It measures signal strength, noise level and sinad. It is housed on a single type 10 plug in module.