At introducing digital terrestrial television broadcasting systems, contiguous channel combiners are required. With the combiners, it is difficult to realize low interference level between channels. On the other hands, at satellite stations for digital terrestrial television broadcasting, separate-channel amplifying systems are superior to multi-channels power amplifying systems in the point of practical use and cost, but the accompanying channel combiners have large size and are expensive. This paper presents data of experimental contiguous channel combiners for the systems to resolve these problems.
