AA34-300 Universal Radio Interface | TSO C50c



Canyon’s Universal Interface Adapter provides multi-purpose amplification and switching functions for varying radio, microphone, and custom audio interface needs.

The AA34 universal radio interface, when integrated with an aircraft radio, effectively manages the interfacing and switching needs of mobile or CB radio systems. This unit offers microphone activation, relay triggering, and sidetone production, all while maintaining complete isolation from the aircraft's ground.

Estimated delivery: September 25th - September 28th
Part Number: AA34-300 Category:

Canyon Aeroconnect (Cobham) AA34-300 Universal Radio Interface Adapter

Canyon’s Universal Interface Adapter model AA34-300 is a mobile/FM radio audio interface. Features include floating key lines, RX and sidetone amplifier, floating audio lines in and out, and microphone amplifier with adjustable output.

AA34-300 Key Features

  • Mobile / FM radio interface
  • Floating key lines
  • RX & Sidetone amplifier
  • Floating audio lines in and out
  • Mic amplifier with adjustable output
  • 14/28 VDC
  • Selectable functions and levels
  • Lightweight (0.63 lbs)
  • TSO C50c compliance: D0160C

Additional information

Weight0.63 lbs
Dimensions1.25 × 2.40 × 3.5 in

TSO-C50c (RTCA/DO-170 /Class II, RTCA/DO-160C)
RTCA/DO-160C categories (B, M, N)


Bulkhead mount with four 10-32 screws

Materials and Finish

5052-H32 brushed aluminum chassis and cover with conversion finish

Input Power

13.8 VDC±10% mVRMS or 27.5 VDC±10% (select by pin), at 70 mA

Input Signals

mic, 250 mVRMS @ 150Ω ±10%
audio, 2.5 VRMS @ 600Ω ±10%

Output Signals

Mic, adjustable to 1.5 VRMS max into 600Ω or 178 mVRMS into 8Ω
audio, 100 mW into 8Ω or 600Ω nominal

Frequency Response

<3 dB from 350 Hz to 6 Hz


<10% @ rated output

Noise Level

>50 dB down from rated output (without signal)

Temperature Limits

-20°C to 55°C, operating
-55°C to 85°C, survival


35,000 ft


AA34-300 Radio Interface

AA34-300 Universal Radio Interface | TSO C50c