Inovonics AARON 655

AARON FM/HD Re-Broadcast Receiver

The Inovonics AARON 655, a new HD Radio receiver in the firm’s line of rebroadcast (translator) products.



The Inovonics AARON 655 FM/HD Radio™ Rebroadcast Receiver is a state-of-the-art device designed to deliver exceptional performance and functionality in FM and HD Radio™ rebroadcasting applications. Here’s a breakdown of its key features and specifications:


  1. Receiver Performance:
    • Utilizes a sensitive FM/HD Radio™ SDR-based receiver.
    • Returns to programmed frequency and reception mode following a power interruption.
  2. Input Sources:
    • Accepts FM and HD1-8 program sources for rebroadcast.
    • Supports analog, AES-digital, and streaming program inputs with fallback-priority selection.
  3. Outputs:
    • Provides FM-stereo-multiplex (MPX) output.
    • Offers analog and AES digital program line outputs.
    • Supports output streaming.
  4. Audio Processing:
    • Parametric equalizer for continuous control over the audio signal’s frequency content.
    • Three bands of dynamic compression and selectable crossovers.
    • Audio processing features gated and ‘windowed’ AGC, a unique ‘syllabic’ leveler, and independent HF limiting.
  5. RDS Encoder:
    • Includes an onboard RDS encoder that can pass or regenerate incoming RDS.
    • Can reformat HD Radio™ ‘PAD’ data for RDS retransmission.
  6. Remote Control:
    • IP connectivity with a Web-browser interface allows total remote control of the unit from any Web-enabled device.
    • Supports SNMP for remote monitoring and control.
  7. BandScanner™:
    • Built-in spectrum analyzer utility sweeps the entire FM band and presents a graphic display of all received signals, including HD Radio™ transmissions.


  1. Receiver Performance:
    • Tuning Range: 87.5MHz – 107.9MHz in 100kHz steps.
    • Sensitivity/Noise Performance: 5dBμV for 50dB unweighted, monaural analog-FM SNR.
    • Off-Air Frequency Response:
      • Analog-FM: ±0.5dB, 20Hz – 15kHz.
      • HD Radio™: 20Hz – 20kHz (per certification spec.).
  2. Input & Output:
    • Antenna Input: 50Ω (N).
    • Composite/MPX Output: 75Ω (BNC), 1V p-p – 6V p-p for ±75kHz FM carrier deviation.
    • Program Line Inputs/Outputs: Analog and AES digital options available.
    • IP Streaming: Accepts Icecast/SHOUTcast MP3, Ogg, and AAC streams.
  3. Audio Processing:
    • Compression: Three bands of r.m.s. and peak compression with selectable crossover frequencies.
  4. RDS Encoder:
    • Fields Supported: PI, PTY, PS, RT, M/S, TP, DI, CT, AF.
  5. Miscellaneous:
    • Power Requirement: 88VAC – 264VAC, 48Hz – 63Hz; 12 watts.
    • Size and Weight: H: 1¾”/44mm, W: 19”/483mm, D: 9½”/240mm (1U); 9lb/4kg (net), 12lbs/5.4kg (shipping).
    • Environmental: Continuous operation at ambient temperatures between 32ºF/0ºC and 122ºF/50ºC; 0-95% relative humidity, non-condensing, altitudes to 10,000ft/3,048m.

Overall, the Inovonics AARON 655 is a highly capable FM/HD Radio™ rebroadcast receiver with advanced features and robust performance suitable for demanding broadcast environments.