Abstract: A method includes the operating steps of providing a stretch twisted yarn including a plurality of single threads twisted together. A pair of mixed threads has substantially inextensible plant fibers mixed with water-soluble fibers, and an elastic single thread includes synthetic elastic fibers. The method further includes providing a further yarn, manufacturing a fabric through weaving by interlacing the twisted yarn with the further yarn, and dissolving the water-soluble fibers from the fabric.

Abstract: A main transmission line with inner and outer metallic layers on a dielectric tube is joined to a coaxial branch line via a pin and a sleeve forming extensions of the inner and outer conductors of that branch line, the pin penetrating two diametrically opposite bores of the dielectric tube while the sleeve is in contact with the outer metallic layer. Two lugs on the sleeve are soldered to that outer layer whereas a connection between the inner layer and the pin is established via a conductive coating of the wall of the remote bore which terminates in a metallic patch surrounding the outer end of that bore, the patch being insulated from the outer layer of the tube and being soldered to the projecting tip of the pin.