Inovonics 674 INOmini AM Broadcast Monitor/Receiver

The Inovonics 674 INOmini AM Broadcast Monitor/Receiver is a compact, professional-grade solution for continuous off-air monitoring of AM broadcast signals. Built for reliability, this unit is ideal for engineers and broadcasters who need to verify on-air audio quality, signal integrity, and modulation accuracy.

Part of Inovonics’ trusted INOmini series, the 674 provides accurate AM signal reception and audio decoding in a rugged 1/3-rack enclosure. Its compact design, advanced alarm functions, and intuitive web interface make it perfect for use at transmitter sites, monitoring points, or within studio facilities.

Key Features

• Professional AM broadcast receiver for signal confidence monitoring

• Compact 1/3-rack width design for space-saving installation

• Accurate audio reproduction with selectable IF bandwidths

• User-selectable AM de-emphasis and modulation modes

• Built-in alarms for carrier loss and silence detection

• Analog and AES3 digital audio outputs

• Ethernet port for web-based configuration and control

• Compatible with rack kits for mounting up to three units in 1U

Technical Specifications

• Reception Frequency Range: 520–1710 kHz (AM band)

• Tuning Resolution: 1 kHz steps

• De-emphasis: Selectable to match broadcast standards

• Audio Outputs: Balanced analog and AES3 digital

• IF Bandwidths: Narrow/Medium/Wide user selection

• Signal-to-Noise Ratio: >65 dB typical

• Alarm Outputs: Contact closures for carrier and audio loss

• Web Interface: Full configuration and monitoring via Ethernet

• Power Requirement: 90–240 VAC, 50/60 Hz

• Dimensions: 4.6 × 8.5 × 1.7 in (117 × 216 × 44 mm)

Comparison with Other INOmini Models

• INOmini 674: AM monitoring with web control and alarms.

• INOmini 637: AM SiteStreamer for remote web-enabled monitoring.

• INOmini 647: AM SiteStreamer II with enhanced streaming features.