The M-980-02 is a general-purpose call progress tone detector operating from 2.8 to 5.5 VDC power supply range. It covers the common call progress frequency from 315 to 640 Hz featuring an inexpensive ...
A NOAA weather receiver housed in a 1RU chassis, this receiver offers a front panel that has a built-in monitor speaker with volume control. There are two 10-segment LED indicators, one for the ...
The M-980-02 is an integrated circuit tone detector for general purpose use in automatic following of switched telephone calls. The circuit uses low-power CMOS techniques to provide for this function.
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