Q: What is a leaky feeder?

This is a special type of coaxial cable that is manufactured with regularly spaced openings in the outer copper sheath. Unlike conventional coaxial cable which is designed to trap RF energy from escaping, leaky coaxial cables are used where deliberate RF escape and ingress is wanted.  It is primarily used in confined spaces such as tunnels, mines, underground railways etc.

Traditional antenna system propagation does not work in tunnels and mines. ‘Nearfield’ propagation up to a few metres from a leaky feeder running the length of the tunnel is a proven reliable solution.

Wood and Douglas has used leaky feeder in TV studio wireless talkback applications as well as in train station video camera solutions. We have experience designing multi-channel signal combiners and splitters. Call our sales office to discuss any similar applications that you have.


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