| 摘要 |
PURPOSE:To easily cope with the deteriorated line state by adjusting the titled device so as to obtain an output in matching with a transmission.reception circuit in advance, employing a module configuration to a local oscillation circuit of the transmitter-receiver and mounting removably the local oscillation freely to/from the transmission-reception circuit. CONSTITUTION:The oscillation circuit 1 using a crystal oscillator X is used as the local oscillation circuit and module configuration is applied to the local oscillation circuit to as to be fitted/removed to/from the transmission-reception circuit freely. The line channel is revised to the transmission-reception band capable of sending a signal excellently when the line state is deteriorated by replacing the local oscillation circuit and in adjusting the local oscillation circuit to obtain an output in matching with the transmission-reception circuit in advance, the transmission-reception band is not deviated from a desired band.
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