Accession Number:

AD0411333

Title:

DEVELOPMENT AND FABRICATION OF ANTENNA GROUP AN/GRA,

Descriptive Note:

Quarterly progress rept. no. 1, 1 Jan-1 Apr 63,

Corporate Author:

HOFFMAN ELECTRONICS CORP LOS ANGELES CA

Personal Author(s):

Report Date:

1963-04-01

Pagination or Media Count:

29.0

Abstract:

A ground system for Antenna Group ANGRA was de veloped after extensive testing at three antenna test sites where the following soil conditions prevail 1 rocky, low conductivity soil, 2 rich, sandy-loam soil, and a compromise of 1 and 2. The physical, electrical, and mechani cal characteristics of the ground system were determined. It was concluded to use a counter poise or ungrounded system that would provide a minimum of losses and ease of installation for field conditions. Weight reduction studies were conducted to bring the system weight in line withthat of the Signal Corps Specification. This s accomplished by the elimination of nonessential components. It was concluded to eliminate one of the two hydraulic pumps. This reduced the ef ficiency of the hydraulic system somewhat, but was within specifications. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE