Gates

The Gates Radio Company, founded in 1922 by Parker S. Gates in Quincy, Illinois, was a prominent manufacturer of professional broadcast equipment. Known for its reliable transmitters, consoles, and studio gear, the company became a key player in the radio and television industry. It was acquired by Harris Corporation in 1957 and operated as Harris-Gates before becoming Harris Broadcast, continuing its legacy in broadcast technology.

Released in 1952

Gates SA-38 Limiting Amplifier

The Gates SA-38 Limiting Amplifier delivers low-noise, low-distortion performance with up to 20 dB compression, instant attack, selectable release times, and a dual-scale meter for easy monitoring. It features ladder attenuators, T-network control, and a service-friendly design.
Released in 1956

Gates STA-Level Limiting Amplifier

The Gates STA-Level is an automatic gain amplifier that maintains consistent audio levels with up to 40 dB compression and low distortion. It features adjustable recovery times, built-in attenuators to prevent signal overload, and operates efficiently with minimal supervision. Its push-pull circuitry reduces noise and distortion, ensuring clear audio for broadcasting applications.
Released in 1957

Gates 28-CO Limiting Amplifier

The Gates 28-CO Limiting Amplifier improves broadcast audio by limiting peaks with minimal distortion. It features adjustable release times, simple controls, and a durable steel-grey chassis with a self-contained power supply.
Released in 1958

Gates Level Devil Automatic Gain Control Amplifier

The Gates Level Devil is a professional-grade audio amplifier designed for broadcasting and audio applications. It features four amplification stages, regulated power supply, and input pads for flexible signal control. The amplifier includes a differential design for noise rejection, push-pull signal configuration for stability, and advanced peak limiting and expander circuits to manage gain and distortion effectively. Its reliable performance in TV and FM broadcasting environments makes it a versatile and trusted tool for maintaining audio clarity under challenging conditions.
Released in 1959

Gates SA-39B Limiting Amplifier

The Gates SA-39B limiter offers smooth, fast compression with minimal distortion, even at high levels. Designed with input from BBC engineers, it features near-instant attack, six release settings, and precise calibration via a 4-inch meter. Its serviceable design includes a hinged front panel for easy maintenance and cleaning.
Released in 1965

Gates FM Top-Level Limiter

The Gates FM Top Level Limiter is a 1960s solid-state dual-channel audio processor designed for FM broadcasters. It prevents overmodulation with instant attack and release, offering ±1 dB response from 30–15,000 Hz, 28 dB gain, and outputs up to +18 dBm at 600 ohms. It’s durable, compact, and efficient, enhancing FM audio quality while reducing distortion and noise.