Intuitive Circuits, LLC - DTMF Decoder and Video Text Inserters
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DTMF-ENC 232 DTMF-ENC232 is a DTMF (dual tone multiple frequency) encoder board that is controlled via 9600 baud RS-232 serial commands.  By using a terminal program such as HyperTerminal or custom developed software, an attached radio transmitter can be keyed with continuous or momentary DTMF digits being sent at any interval.  Example applications include the remote controlling of complicated repeater controllers and the driving of DTMF relay camera pan / tilt systems.

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Our products span a wide variety of diverse applications:


On-Screen Display Products: Video on-screen text insertion technology for point-of-sale, GPS, and more.

        RS-232 / TTL Controlled


        Fixed (Static) Screens


        Point of Sale (POS) Text Inserters


DTMF Products: DTMF (dual tone multiple frequency) decoders and encoders.

GPS Products: Non on-screen display GPS logging devices.

Amateur Television (ATV) Products: ATV products for the amateur radio hobbyist.

Miscellaneous Products: Novel utility circuits.

Discontinued Products


Click here to download our NEW 2011 product catalog: IntuitiveCircuits2011Catalog.pdf

DTMF Decoder Board
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