In-line attenuators can be inserted in coaxial cable feeds to reduce signal amplitude levels. Combinations of attenuators may be used together to create greater insertion losses. For example, if a cable feed was found to have a signal level of 25 dBmV, and a level of only 9 dBmV is desired, then one 300010 and one 30006 could be used in series to create a 16 dB insertion loss, thereby reducing the signal level from 25 dBmV down to 9 dBmV.

-12dB @ 40 MHz
-5.5dB @ 1 GHz
-0.3dB @ 2.1 GHz


Coaxial cable attenuates high frequencies more than low frequencies. The TSEQ-2150 creates an attenuation loss equal and opposite to cable loss. This problem is most severe when cascading amplifiers one after the other. The signal differences are amplifiedto a point where the higher frequency signals are so small compared to the low frequency signals that they can no longer be received. The TSEQ-2150 provides a balanced signal level by compensating for the high frequency attenuation and allowing all signal levels on all channels to be of equal amplitude at distant locations. Therefore, the picture quality on higher channels will be maintained.

A Channel Vision low pass filter is used on systems when the broadband entertainment feed is supplied by a CATV service. The filter removes all CATV channels above the pass band, allowing insertion of locally-generated channels. In addition, the filter removes cable system noise which degrades the picture qualityof the locally-generated channels.

A Channel Vision low pass/high-pass filters are used to pass all channels belowa selected frequency, and above a selected frequency. These filters have a fourchannel slope. The filters remove all CATV channels within the pass band, allowing insertion of locally-generated channels.