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Amplifiers
A641-4B (AM3597C/A) In-Line Amplifier
These In-Line amplifiers are subminiature, microphone amplifiers which make it possible to replace a noisy carbon microphone with a low impedance, low noise dynamic microphone in any voice system.
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A641-5B (AM4326B/A) In-Line Amplifier
These In-Line amplifiers are subminiature, microphone amplifiers which make it possible to replace a noisy carbon microphone with a low impedance, low noise dynamic microphone in any voice system.
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A651-B (AM7067/A) In-Line Amplifier
These In-Line amplifiers are subminiature, microphone amplifiers which make it possible to replace a noisy carbon microphone with a low impedance, low noise dynamic microphone in any voice system.
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A642-1A Interphone Receiver Amplifier
A miniature, encapsulated, receiver amplifier for use in interphone or other voice audio systems. The amplifier has adjustable gain and will operate over a wide range of environmentally.
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A643 Dual Input Telephone Amplifier
A dual input audio amplifier for use in intercommunication systems. It is intended for use in any audio system where mixing, isolation and amplification of two signals are required.
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A643-U2A Single Input Audio Amplifier
A miniature, encapsulated, solid-state unit of high reliability. It is intended for use in any audio system where isolation and amplification of an audio signal is required.
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A81-6 (Am1963F/AIC) Amplifier Assembly
Designed to provide high intelligibility intercommunications and radio monitoring facilities for airborne and ground installations. The amplifier assembly also provides for control and modulation of one transmitter for communication with airborne, ground, and mobile stations.
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A81-77 (AM-1964F/AIC)
A81-85 (AM-4347/AIC-25) Audio Frequency Amplifier
A low noise, high gain unit that features a patented Automatic Gain Circuit (AGC). This maintains the output virtually constant and distortion less over a wide range of output level. The AGC action makes the unit ideal for use as an instrument amplifier and recorder driver in systems with widely varying signals, such as seismological measurements.
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A81-78 (AM-1965F/AIC)
A81-86, A81-105 (AM-4346/AIC-25) Audio Frequency Amplifier
A one-watt power amplifier, that can be used to drive an 8 ohm headset or speaker, or as a low noise, high gain preamplifier in any voice frequency system. The unit also contains an optional Automatic Gain Control Circuit, which can be used to prevent overloading, or distortion of the signal.
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A61-14A (AM-476C) Audio Frequency Amplifier
Designed to operate as a dual microphone and headset amplifier when integrated with appropriate external switching in communication systems.
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A644 (C2645/AIC-14) Audio Amplifier Module
A dual input audio amplifier for use in intercommunication systems. It is intended for use in any audio system where mixing, isolation, and amplification of two signals are required.
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A642 Interphone Microphone Amplifier
A miniature, encapsulated, solid-state microphone amplifier for use in interphone or other voice audio systems. The amplifier provides bias current for a carbon microphone, has adjustable gain, and will operate with a wide variation in output load.
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