9 Electronic filters used in cable television communication networks, namely, tiering filters, data only filters, band segmentation filters, line conditioning filters, return step attenuators, notch filters, single and multiple channel traps, cable simulators, cable equivalent filters, cable equalizers, tilt attenuators, forward equalizers, lowpass filters, highpass filters, band reject filters, window filters, dual tier filters, dual window filters, Multimedia over Coax Alliance filters, and custom filters; and security shields and installation tools for filters and F-connectors