Amplification system

The amplification system comprises adjustable filters (7), each of which comprises a television channel present in an input signal, a amplifier, a first element (5) associated in a subsequent process, a channel demodulation unit demodulating the channel on the frequencies to which the adjustable filters are set previously, and a second element (4) that associates and identifies the channel. The subsequent process comprises: tuning a first filter to a first frequency from a population of predetermined frequencies within a frequency band; and measuring the signal level in the first frequency. The amplification system comprises adjustable filters (7), each of which comprises a television channel present in an input signal, a amplifier, a first element (5) associated in a subsequent process, a channel demodulation unit demodulating the channel on the frequencies to which the adjustable filters are set previously, and a second element (4) that associates and identifies the channel. The subsequent process comprises: tuning a first filter to a first frequency from a population of predetermined frequencies within a frequency band; measuring the signal level in the first frequency; comparing the measured level with a reference level; storing the tuning level of the first frequency in a memory (2); tuning the first filter to a second frequency when the measured signal level is not equal to or no greater than a subscription level; applying the stored tuning level in the memory corresponding to each frequency for setting each of the adjustable filters; demodulating the channel corresponding to the tuned frequency; and selecting the desired demodulated television channel corresponding to the tuned frequency. The measured level of the signal is equal to or greater than the reference level. The tuning level is stored, if the demodulated television channel is selected according to the predetermined frequency. The channel extracts channel identified information from the demodulated channel. The information is configured for tuning the tunable first filter. An independent claim is included for a method of controlling an amplification system for telecommunications signals.