What does DDM stand for?

Digital Data Modem (US DoD)

This definition appears very rarely and is found in the following Acronym Finder categories:

Information technology (IT) and computers
Military and Government

Other Resources:

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Depot Duty Manager (London Underground) Derrick Drilling Machine (Top Drive Systems) Design Data Management Design Decision Memorandum Design Diversity Metric Designated Defensive Marksman Device Driver Module Difference in Depth of Modulation Differential Destination Multicast Digimon Digital Monsters		Digital Diagnostics Monitoring Digital Dissemination Management (VIVACODE) Diploma in Destination Management (degree program) Dipole - Dipole Moment (physics) Direct Debit Mandate (payment method) Direction du Développement des Médias (French: Directorate of Media Development) Discount Dividend Model Discovery and Dependency Mapping (Hewlett-Packard) Discrete Data Management (NASA) Discrete Diffraction Manifold

Samples in periodicals archive:

OTCBB: CXTO) today announced the sale and shipment of a CX2 Data Base Station and CX2 Digital data modems for installation in Miami, Florida.

United States: CX2 Technologies, Inc. Announces Sale of Data Base ...

Since introducing new wireless digital data modems last year, Neulink has won contracts for communications, defense, security, utility-meter, water-management and GPS applications.

RF Industries Ltd. receives orders valued at more than $800,000 for ...