M-980-02 detector equivalent, 3v/5v general purpose call progress tone detector.
* Covers the 315 to 640 Hz range (common call progress)
* Sensitivity to -38 dBm
* Dynamic range over 38 dB
* 40 ms minimum detect
* 8-pin DIP or 16-p.
* Automatic dialers
* Dialing modems
* Traffic measurement equipment
* Test equipment
* Service eval.
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