|60 Cycle Hum:
||These hum bars at 60 cycles are normally a result of dc power on the line. See dcBlocker.
||A switch that selects one of two inputs (A or B) for routing to a common output while providing adequate isolation between the two signals.
||An adjacent channel is one which is immediately next to another channel.
||A circuit which locks an electronic component onto a chosen frequency.
||Controlling the gain of a device by the signal level through the device (using a high gain feedback loop circuit). A rising input signal level produces a negative feedback signal, which lowers the gain. A circuit that uses feedback to maintain the output of an electronic component at a constant level.
||A component which can be tuned to any desired channel.
||A device used to increase the power of a signal.
||A system in which signals vary continuously in contrast to a digital system in which signals vary in discrete steps.
||A device that contributes an energy gain. Satellite dishes, broadband antenna and cut-to-channel antennas are some types of antennas encountered in private cable systems.
||An amplifier located in the immediate vicinity of the antenna, used to amplify extremely weak signals, thereby improving the signal-to-noise ratio of a system.