Engineering Notebooks
name: label: Collection Creator
content: Magellan GPS
setName: label: See more items in
content: Magellan Systems Corporation GPS Records
label: See more items in
content: Magellan Systems Corporation GPS Records / Series 3: Engineering and Product Development Materials
unitdate: label: Date
content: 1987-1996
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
identifier: label: Identifier
content: NMAH.AC.1214, Subseries 3.2
objectType: label: Type
content: Archival materials
scopecontent: label: Scope and Contents
content: Subseries 2, consists of bound, paginated and handwritten notebooks belonging to two Magellan engineers, Janice Jones Blankenhorn, senior software engineer and Don Rea, director of engineering. Each of Don Rea's notebooks contains a page of handwritten annotations made in 2010 describing the contents. Don Rea's 1987 notebook contains documentation on the original Magellan breadboard, custom digital chip (SAC 1), and the digital board design and test, all of which deal with the first generation of the NAV 1000. Rea's 1986 and 1988 notebook contains information about the first generation of software used, GaAS chips, radio frequency (RF) board, second generation (NAV 5000), design work for Swiss Army Chips (SACs), SAC2 digital chip, SAC2B, and the SAC3 chip. Don Rea's  1993-1995 notebook contains notes on the testing of the SAC5, SAC5M and SAC6 custom digital integrated circuit for the third generation.