| 摘要 |
PURPOSE:To provide a head amplifier for a community system that can be used in different kinds of antenna installation modes. CONSTITUTION:An all-channel antenna is connected to an input terminal 3-1, and input is distributed by a distribution circuit 5, and outputted to first intermediate output terminals 12-1 to 12-k. An antenna dedicated for a channel is inputted to either of the output terminals, for example, the output terminal 3-m. The intermediate input terminals 13-1, 13-2,... of channel amplifiers 6-1 to 6-k are connected to the first intermediate output terminals 12-1, 12-2,..., and the intermediate input terminal 13-k is connected to a second intermediate output terminal 11-k. In this way, it is possible to correspond to the case that the all-channel antenna and the antenna dedicated for a channel are installed.
|
