Abstract: The present invention provides a coaxial cable having increasing moisture absorbency to remove moisture present in the cable and to prevent corrosion of the conductors in the cable. The coaxial cable of the invention includes an inner conductive tube, a moisture-absorbent material within the inner conductive tube, a dielectric surrounding the inner conductive tube, and a tubular metallic outer sheath surrounding the dielectric. The present invention further includes a method of making a coaxial cable that is capable of absorbing moisture that is present in the cable.

Abstract: A flexible coaxial cable comprises a core including at least one inner conductor and a closed cell foam dielectric surrounding the inner conductor. The flexible coaxial cable also includes a tubular metallic sheath closely surrounding and preferably bonded to the core. The closed cell foam dielectric is a low density polyolefin foam and possesses improved electrical properties over conventional foam dielectrics. The coaxial cable has a velocity of propagation of greater than 90 percent of the speed of light but still maintains high flexibility and bending characteristics.

Abstract: The present invention provides a non-braided shielded drop cable that can be easily attached to a standard connector. The cable includes a cable core including a center conductor and a dielectric layer surrounding the center conductor, a first electrically conductive shield surrounding the cable core and bonded thereto, a second electrically conductive shield surrounding the first shield, and a cable jacket surrounding the second shield and bonded thereto. An interstitial layer is located between the first and second shields and is composed of axially displaceable elongate strands and is typically composed of helically served yarns or metal wires. The present invention also includes a method of making a shielded cable.

Abstract: A communications cable is provided having at least one elongate electrical conductor surrounded by a layer of insulating material, said layer comprising a foamed fluorinated polymer formed using a liquid or solid blowing agent having a vaporization temperature at ambient temperature of between about 140° F. and about 700° F. The elongate electrical conductors can be provided as at least one pair of twisted wires, each wire thereof surrounded by a layer of insulating material comprising the foamed fluorinated polymer. The communications cable includes insulated wires which possess a layer of foamed fluorinated polymer insulating material having uniform thickness and electrical properties along the length of the wire. In addition, the fluorinated polymer can be applied on the conductor in a relatively thin layer which minimizes the amount of fluorinated polymer material used to insulate the individual conductors.

Abstract: A communications cable is provided having a support strand and at least one coaxial cable helically wound around the support strand. The coaxial cable includes an inner conductor, a dielectric surrounding the inner conductor, an outer tubular metallic sheath surrounding the dielectric, and optionally a protective jacket surrounding the metallic sheath. The communications cable is manufactured such that the ratio of the length of coaxial cable to the length of support strand is between about 1.005 and 1.015. The communications cable is also preferably wound around the support strand using a varying lay length thereby minimizing signal loss due to cable damage. The communications cable of the invention is especially suitable for aerial installation and may be installed in one pass, without the need to form expansion loops in the coaxial cable.