The collection includes 3046 seven by three inch-aperture cards separated by subject titled divider tabs. The microfilm mounted on the aperture cards contains document images of numerous test reports, status reports, interoffice memoranda and computational formulas; also, equations and diagrams conducted on the Mariner Mars '69 Spacecraft. JPL contracted out the telecommunication systems analysis tests to Motorola's Aerospace Center. To support this effort, Motorola establish a project organization on-lab at JPL. The section that was allocated in support of this effort at that time was Section 367, Mariner Telecommunications. The Motorola Project Leader provided the necessary interface with the JPL Group Leader to define and complete the tasks presented to them under contract. Total support consisted of 4 engineer's full time at JPL and the equivalent of 1.5 engineers at Motorola. Under this portion of the contract, Motorola provided Telecommunications Systems Analysis and Design support for the Mariner '69 Telecommunications Systems Group during a 10-month period. Motorola conducted tests on the radio flight subsystems, flight command subsystems, data storage subsystems, and ground telecommunication parameters, spacecraft attitude, trajectory commands and various wide ranges of transmitter power and receiver noise tabulation tracking. The daily documented data originally were logged on regular eight and half by eleven-inch paper. Later, after Motorola's task was completed and all systems tests were documented, JPL completed the remainder of all systems tests through 1969. Upon completion, the resultant documents were then shipped to Microfilm Business Systems Company in Los Angeles, California. MBS transfer the documented data to a microfilm format for long term preservation. Once completed, the aperture cards where shipped back to JPL. They could be viewed by using a standard microfiche reader. They were stored in the JPL Communications System and Research Section. MBS had arranged them numerically. The numeric designation is printed across the top of each card using a 9-digit number; (i.e., 4-digit section or division number, 2-digit year and 3-digit card number sequence). Followed by each engineer's name, the abbreviated mission and 2-digit year, followed by the month date and year. During storage and prior to archival accessioning during the last 30 years, the original order of the aperture cards was disturbed. After the collection was transferred to the Archives, the arrangement was reconfigured to its original order as much as possible. However, a new reconfiguration sequence was established by using the subject divider tabs as a filing format. In addition, some aperture cards were missing. Those cards had been replaced with hand written slips of paper inserted as an indicator for the missing card and or cards with their assigned 3-digit card number. Enclosed in box 1, 2 and 3 of 4 are interoffice memo (IOM) aperture cards filed with subject title divider tabs in sequential date order. The range is 1965-1968. Enclosed in box 2 is an alphabetical filing sequence using the subject divider tabs listing the engineer's last name, and the year the report was logged, 1967. These various tests were conducted by Section 339, Spacecraft Telecommunications Systems. Enclosed in box 3 of 4 and continuing through box 4 are Mariner '69 status reports. The status reports are filed with subject title divider tabs; each tab indicating Mariner '69 status reports; the range is M'69-1 - M'69-4, indicating the four subsystems RFPs design and guidelines the engineers used in defining some of the neccessary requirements. Several cards are multiple in a series, (i.e., 1 of 2 or 1 of 9 etc.). It should be noted that several cards have as many as 4 documents per aperture card.
