ANSI/SCTE 147 2022

Specification for 75 ohm, Inline Attenuators

Executive Summary

This document outlines the mechanical, electrical and environmental requirements for 75 ohm inline attenuators.


The purpose of this specification is to provide the mechanical, electrical, and environmental requirements for 75 ohm “F” type inline attenuators generally used for indoor residential applications. DOCSIS 4.0 specifications include operation at frequencies up to 1794 MHz. This document provides specifications or procedures for frequencies up to 3000 MHz.


This specification is necessary to provide manufacturers and users of this product a basic set of standard dimensional and performance requirements from which to gauge performance.

Intended Audience

This document is intended for manufacturers and end users of this product.