logo_GDPGDP Space Systems is a leading supplier of ground based aerospace telemetry products and systems. These products include modulators, demodulators, telemetry synchronizers, simulators, data link testers, and real-time telemetry data processors. GDP products are in use worldwide at satellite ground terminals, telemetry ranges, and testing facilities.


BIT Synchronizers, Converters, Data Switched, Data Test Sets, Data Quality Monitors, Decommutator, Demodulators, Detectors, Frame Synchronizers, Modem, NASCOM, Receivers, Simulators, Space Ground Link System, Summers, Synthesizer.


Rocktronics, Inc. (Head Office)

President & CEO : Mr. Stewart Choi
1464 E. Valencia Dr., Fullerton, CA 92831 U.S.A
Tel: 714)578-0500 Fax: 714)578-0505

Rocktronics Korea, Inc. (Branch Office)

Teran Bldg., GangNam-Ku, Seoul, Korea Tel: 02)553-0095 Fax: 02)553-2833

MegaFos, Inc.

(export License / value add / assembly service subsidiary)
Tel: 714)447-0700 Fax: 714)447-0701