Avionics & airborne LRUs: Communication System
Radio Selector Unit ERSU72D/1
Microphone, intercom and receiver control in a redundant selector architecture
The ERSU72D/1 provides microphone signal amplification, intercom or transmit selection, and control and amplification of receiver signals within an airborne communication system. Its telephone-signal amplification path is duplicated and powered from two independent 28V DC sources so the unit can continue operating if one amplifier or power supply fails.
KEY DETAILS
Amplifies microphone and receiver signals
Supports intercom or transmit selection
Front-panel potentiometer controls intercom audio level
CALL push-button overrides intercom
Includes 36-way and 6-way bayonet-lock rear connectors and panel illumination lamps
