The transmitter-studio link of a radio or television station sends telemetry data from the remotely-located transmitter back to the studio for monitoring purposes. The TSL may return back the same way as the studio-transmitter link, or it can be embedded in the station's regular broadcast signal as a subcarrier.
Data such as transmitter power, temperature, VSWR, voltage, modulation level, and other status information are returned so that broadcast engineering staff can correct any problems as soon as possible.
