To design a 12 channel transmit-receive antenna multicoupler to operate over the range 225 - 400 mc. The isolation between adjacent channels spaced 4 mcps shall be 60 db minimum, with an insertion loss between the antenna and any equipment of 1 db maximum. The power level shall be 200 watts average power to a load of 52 ohms nominal re¬sistance.nIt was hoped that the final multicoupler would be finished by the end of March, but the problem of obtaining satisfactory durable silver plating has taken several months it is hoped that this problem will be solved in the near future.
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