The finger-to-nose test is not a standardized field sobriety test recognized by the National Highway Transportation Safety Administration (NHTSA). Because the NHTSA does not endorse the finger-to-nose test as a reliable indicator of mental and physical impairment, it holds less weight in court than a standardized test.
a channel is a output from the amp to the speakers or subs. if you have a 2 channel amp there is 2 outputs on the amp if you have a 4 channel amp there are 4 outputs this goes for all the amps whither it is a 1 channel,2channel 4channel or 5 channel. channel= output.
Troubleshooting the RF Amplifier Stage. Function: Many receivers incorporate a stage of RF amplification ahead of the converter stage. It is the first stage in the signal path. The RF stage receives signals from the antenna, tunes the desired signal, amplifies it, and passes it on to the converter. The RF stage provides several advantages. 1  Increased sensitivity. 2  Increased selectivity. 3  Improved AVC (Automatic Volume Control) action. 4  Elimination of image-frequency response - peculiar to superhetrodyne receivers.