The AUD-251H Audio Panel and Intercom is very similar to the better-known AMR-350 from the reputable Collins Microline series. The difference is that instead of a Marker Beacon Receiver and Indicator, the AUD-251H contains a basic Intercom.

The AUD-251H has independent speaker and headphone amplifiers, and provides fail-safe operation. If either amplifier were to fail, full operation is still possible with the other.

Easy-to-use toggle switches are used to select audio for headphones or the cabin speaker. The switches let you see your selected audio source at a glance.

The AUD-251H has the following switch positions:

• 2 VHF COMMs
• HF COMM
• 2 NAVs
• ADF
• DME
• Marker Beacon

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