Accession Number : AD0617110

Title :   MINIATURE CRYSTAL UNITS FOR SINGLESIDEBAND OPERATIONS.

Descriptive Note : Quarterly rept. no. 3, 1 Dec 64-28 Feb 65,

Corporate Author : BLILEY ELECTRIC CO ERIE PA

Personal Author(s) : Wolfskill,J. M. ; Spurlin,Roy ; Mouck,Robert

Report Date : 28 FEB 1965

Pagination or Media Count : 21

Abstract : Progress is reported on the development and fabrication of special crystal units designed especially for use in portable single-sideband communications equipment. The crystals, in the 5- to 20-megacycle range, are mounted in miniature HC-26 glass holders. Operated at 10-microwatts drive, these crystals must attain 200,000 Q and have matched temperature characteristics. Fabrication and testing of the first developmental model samples were undertaken. Serious problems were encountered in producing these units; losses in sealing were much more severe than had been expected. Most of the losses were because of distortion of temperature characteristics as a result of sealing. These distortions resulted from twinning of small portions of the quartz resonators--a condition which was often not accompanied by significant changes in resistance values. Although not completed during the period covered by this report, changes in sealing fixtures and techniques promise to minimize this problem on future groups. (Author)

Descriptors :   (*CRYSTALS, MINIATURE ELECTRONIC EQUIPMENT), (*MINIATURE ELECTRONIC EQUIPMENT, SINGLE SIDEBAND COMMUNICATIONS), CRYSTAL HOLDERS, GLASS, QUARTZ, HIGH FREQUENCY, QUARTZ RESONATORS, SEALS(STOPPERS), PORTABLE EQUIPMENT

Distribution Statement : APPROVED FOR PUBLIC RELEASE