Collins Aerospace RIU-4100 - Part Number: 822-1590-102, Unit Condition: New

Features:

• Dual-channel unit providing radio data concentration, single communications management, dual audio management, and dual radio control pass-through functions
• Receives data from each radio and outputs data to other airplane systems
• Provides digital audio interface to radio sensors, the CPE, and other airplane audio sources
• Converts analog audio to digital audio format
• Dual tune paths to each onside radio
• Optional SELCAL compatible RIU analyzes the audio inputs from HF receiver/transmitter for the presence of SELCAL tones
• When SELCAL option is enabled, the RIU gives the SELCAL alerts to the crew when the SELCAL tones match the pattern assigned to the aircraft