Inovonics 732 Original price was: €2,535.Current price is: €2,395.
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Inovonics 525N

AM Modulation Monitor

The Inovonics 525N was specifically developed to give accurate AM readings with both analogue AM and Hybrid Digital (IBOC) transmissions.

Original price was: €3,270.Current price is: €3,115.

SKU: 100619


Inovonics 525N

AM Modulation Monitor

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The 525N is a third-generation AM Modulation Monitor from Inovonics. It can accept either a direct feed from the transmitter, or function as a precision Reference Receiver to give accurate off-air measurements reflecting ATU, phasor and antenna parameters.

A proprietary phase-locked synchronous detector provides precise demodulation, rejects interference, and recovers only the amplitude-modulated component of HD Radio™ ‘hybrid digital’ transmissions.

The 525N is also compatible with power-saving MDCL operation. Although the 525N maintains full wideband response for measurement, it features user-selectable audio-monitor cut-off characteristics to mitigate noise or to simulate the response of consumer radios.

IP connectivity with full SNMP support gives the user total access to the unit from any computer, tablet or mobile device. Setup, metering, alarms and audio monitoring are all available from the remote monitoring point.

The 525N is supplied with a large-aperture, weatherproof passive AM Loop Antenna.


  • Accurate, simultaneous display of positive and negative peak modulation with Peak Density histogram
  • Absolute-limit and user-programmable Peak Flashers
  • Calibrated RSSI signal strength display and asynchronous noise readout
  • Alarms for Low Signal, Audio Loss and Overmodulation with panel indicators and ‘tally’ closures
  • Full Web interface gives total remote control of all setup parameters, metering, alarms with logging, and streamed audio monitoring
  • 5 Station Presets
  • 10kHz/9kHz channel spacing
  • Balanced audio output
  • Supplied with out-door passive AM Loop Antenna
  • Headphone jack