San Diego in San Diego County, California — The American West (Pacific Coastal)

Development of CDMA for Cellular Communications

1989

— IEEE Milestone —

Cellular Communications Marker image. Click for full size.

Photographed By Craig Baker, March 11, 2022

1. Cellular Communications Marker

Inscription. On 7 November 1989, Qualcomm publicly demonstrated a digital cellular radio system based on Code Division Multiple Access (CDMA) spread spectrum technology, which increased capacity, improved service quality, and extended battery life. This formed the basis for IS-95 second-generation standards and third-generation broadband standards that were applied to cellular mobile devices worldwide.

Erected 2017 by Institute of Electrical and Electronics Engineers.

Topics and series. This historical marker is listed in these topic lists: Communications • Industry & Commerce • Science & Medicine. In addition, it is included in the IEEE Milestones in Electrical Engineering and Computing series list. A significant historical date for this entry is November 7, 1989.

Location. 32° 53.73′ N, 117° 11.764′ W. Marker is in San Diego, California, in San Diego County. Marker can be reached from Morehouse Drive, 0.4 miles east of Scranton Road, on the right when traveling east. Located in the courtyard between the buildings. Touch for map. Marker is at or near this postal address: 5775 Morehouse Dr, San Diego CA 92121, United States of America. Touch for directions.

Other nearby markers. At least 8 other markers are within 7 miles of this marker, measured as the crow flies. Washington to Baltimore 1844 Telegraph Message (approx. 2.9 miles away); Torrey Pines Gliderport (approx. 3.2 miles away);

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Conserving California's Coastal Treasures (approx. 3.4 miles away); Torrey Pines Lodge (approx. 3.7 miles away); Ellen Browning Scripps (approx. 3.8 miles away); Johnson-Taylor Adobe Ranch House (approx. 4.9 miles away); Tierrasanta - Formerly Camp Elliott (approx. 5.9 miles away); Kate Olivia Sessions' Nursery Site (approx. 6.4 miles away). Touch for a list and map of all markers in San Diego.

Photographed By Craig Baker, March 11, 2022

2. Cellular Communications Marker

Credits. This page was last revised on March 16, 2022. It was originally submitted on March 16, 2022, by Craig Baker of Sylmar, California. This page has been viewed 125 times since then and 6 times this year. Photos: 1, 2. submitted on March 16, 2022, by Craig Baker of Sylmar, California.