Accession Number:

AD0656120

Title:

A FOAM POLYETHYLENE INSULATED COAXIAL CABLE FOR DIRECT BURIAL ON COMMUNITY TV SYSTEMS,

Descriptive Note:

Corporate Author:

NORTHERN ELECTRIC CO LTD MONTREAL (QUEBEC)

Personal Author(s):

• Beamish,W. R.

Report Date:

1963-12-01

Pagination or Media Count:

16.0

Abstract:

The development of economical expanded polyethylene insulated coaxial cables for the distribution of VHF television signals at channel carrier frequencies has stimulated further interest in the problem of controlling variations in attenuation due to moisture absorption and in reducing attenuation to a minimum in small size cables. This paper discusses the use of a longitudinal copper tape outer conductor in which a soldered seam has been used to provide a hermetic moisture seal in a cable of a type used for buried distribution in cable TV systems. A discussion of the effect of moisture on cellular polyethylene is included along with typical data on the extent to which moisture can cause an increase in the attenuation of coaxial cables in moist environments. Author

Descriptors:

• *COAXIAL CABLES
• *TELEVISION SYSTEMS
• UNDERGROUND
• EXPANDED PLASTICS
• POLYETHYLENE PLASTICS
• ELECTRICAL INSULATION
• ATTENUATION
• HERMETIC SEALS
• MOISTURE

Subject Categories:

• Electrical and Electronic Equipment
• Non-Radio Communications

Distribution Statement:

APPROVED FOR PUBLIC RELEASE