| 摘要 |
A communication apparatus is applicable to a communication system such as a wireless LAN, and is always capable of establishing good communications in an automatic and speedy manner thereby to eliminate human operations and achieve the low cost irrespective of the presence or absence of jam transmissions. The communication apparatus can wirelessly communicate with terminal devices 1A, 1B. A channel setting part 31 is able to set a plurality of communication frequency bands with a specific communication frequency band being set as a default. An SN ratio detection part 34 detects the communication conditions of a plurality of communication frequency bands, which can be set by the channel setting part 31, by detecting SN ratios thereof. A channel selection part 36 selects a communication frequency band whose SN ratio is the higher among the plurality of communication frequency bands based on the communication conditions detected by the SN ratio detection part 34, thereby enabling the channel setting part 31 to set the communication frequency band thus selected for communications.
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