NOAA Weather Receiver

Share on Facebook Share on Twitter


The 636 has been replaced by model 676.

The INOmini 636 is a professional-use receiver specifically for broadcasts from the United States National Weather Service (NWS). In addition to weather condition information and forecasts, the NWS also sends alerts for other natural disasters, environmental hazards, and public safety situations.

The 636 is a software-defined receiver with digital voice enhancement features to optimize articulation. It provides both balanced and AES-digital line outputs, plus alarms for carrier and audio loss, and for the 1050Hz NOAA alert tone.

"For stations that want to provide a quality weather alerting service to their audience, the Inovonics INOmini 636 is a must."

Chris Wygall, CBRE - The Journey Radio Network


  • Tunes all seven weather alert frequencies

  • Responds to 1050Hz tone alerts

  • Front-panel metering of signal and audio levels

  • Balanced analog and AES digital audio outputs

  • Alarm outputs for low signal, audio loss, 1050Hz alert tone

  • Front-panel headphone jack



Inovonics INOmini 636 NOAA Weather Radio

- Chris Wygal - Journey Radio Network 636 Review - Radio Magazine - July 21,2015


Tuning Range

Tunes to standard fixed-frequency broadcasts between 162.400Mhz and 162.550MHz in 25kHz increments

Antenna Input

US-standard 75-ohm F connector


≤5μV for 35dB SNR

Frequency Response

±1dB, 200Hz – 4kHz; articulation-optimized

Audio Outputs

+4dBu balanced Analog L/R (XLR); AES Digital (XLR); front-panel Headphone Jack (3.5mm TRS)

Alarm Tallies

Individual open-collector NPN transistor outputs for Carrier Loss, Audio Loss, and 1050Hz Alert Tone

Power Requirement

12VDC at 150mA (2.1mm x 5.5mm coaxial); inline switchmode power supply included

Mounting Options

An optional rack adapter mounts one, two or three INOmini format units in a standard 19-inch, 1U rack space

Size and Weight

1.6”H x 5.5”W x 5.5”D; 4 lbs. shipping weight