AN/FCC-17 TYPE LOWER SIDEBAND MULTIPLEXER EQUIPMENT (EXPERIMENTAL).
Abstract
The report contains a summary of the design and evaluation efforts and a detailed theoretical discussion of the lower sideband AN/FCC-17 channel multiplexing and associated equipment. This equipment was designed for use with existing AN/FCC-17 or commercial multiplex systems, thereby increasing system flexibility, permiting end-to-end or group-interconnect operation with other multiplexer sets conforming to channel, group, and supergroup recommendations of CCITT. The equipment was designed to logically integrate with existing AN/FCC-17 equipment without modification. External envelope delay is provided as an option only when phase equalization is required. The new equipment items were designed to meet AN/FCC-17 idle noise, loaded noise, and channel harmonic distortion characteristics of MIL-M-27741. Only 2 major design problems were encountered and were related to the channel carrier generator 4-kc amplifier combining network. The first problem was in obtaining adequate paralleling action due to excessive coil resistance. The other problem was concerned with insufficient temperature compensation that caused variation in signal levels of frequencies between 64 and 108 kc at various ambient temperatures. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- May 20, 1966
- Accession Number
- AD0636207
Entities
People
- C. Dean Charrier
- Forrest N. Easley
- Stanley Lee