Accession Number:

AD0600822

Title:

SMALL LIGHT-WEIGHT ALTITUDE TRANSMISSION EQUIPMENT

Descriptive Note:

Final engineering rept.

Corporate Author:

HAZELTINE CORP LITTLE NECK N Y

Personal Author(s):

Report Date:

1964-04-15

Pagination or Media Count:

95.0

Abstract:

The report describes the design and development of the Small Light-Weight Altitude Transmission Equipment SLATE III and SLATE III Mark I for the Federal Aviation Agency Systems Research and Development Services. The equipments operate at a transmitter frequency of 1090mc with a nominal peak power output of 300 watts, and a receiver frequency of 1030mc with a nominal sensitivity of -74dbm. SLATE III replies to Mode A Identity or Mode C Altitude interrogations. The reply codes include any of 64 codes 00-77 plus the Special Position Identification SPI or IDENT pulse on Mode A, and 158 codes on Mode C altitude reporting at 100 foot intervals from -1000 to 14,7000 feet. Circuits are included which automatically prevent altitude reporting at 14,800 feet and above so that erroneous information will not be transmitted. Operation of the receiver and video processing and transmitter circuits is the same for both modes of operation. The decoding and reply encoding circuits function to cause transmission of replies to Mode A or Mode C interrogations on a first-come, first-served basis. Author

Descriptors:

• TRANSPONDERS
• HEIGHT FINDING
• AIRPORT RADAR SYSTEMS
• TRANSMITTER RECEIVERS
• CODING
• ALTIMETERS

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE