Coaxial Cables in Bulk To complement its extensive range of coaxial connectors, RB-Net now offers a wide selection of coaxial cables for bulk buying. This means you can purchase optimally matched coaxial cables and connectors directly from a single source. You will find coaxial cables in our range which will ideally suit your applications and demands; high-quality PTFE cables, low-cost PE cables, low loss cables, as well as conformable semi-rigid cables with high screen effectiveness. RG cables Standard length coils Low loss cables Conformable semi-rigid cables Special lengths (on request) 50 and 75 Ohm types Suitable for terminating with Telegärtner coaxial connectors Criteria for selecting suitable coaxial cables In the cable chart opposite, you will find a multiplicity of technical parameters which should simplify selection of the right cable for your application. Impedance 50 Ohm or 75 Ohm For video and broadcast transmissions, 75 Ohm technology applies. For almost all other systems, 50 Ohm technology is used. Insertion Loss (Attenuation) Insertion loss is the ratio of input power to output power; it is an expression of the total electrical losses in a cable run. These losses are mainly dependant on the cable diameter, the dielectric material, and the transmission frequency. Low loss cables set themselves apart by their relatively good (i.e. low) attenuation values. Screen effectiveness The screen effectiveness is an expression of how well a cable prevents electrical energy escaping from or entering into the transmission line. To improve the screen effectiveness of cables, double braid, foil and braid, and tinned braid screens can be used. Temperature range Depending on the materials used in the manufacture of cables, they are suitable for operating in differing ambient temperatures. Cables with PE or PVC sheaths can be used up to approx +80° C. Cables with PTFE or FEP jackets upto approx. +200° C.
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