# 指向性

* 指向性測定方法１(標準的な設置方法)\
  ※ロゴ側が180°方向

![<図：指向性測定方法1>](/files/-Mfk_EO1gwFI0SGnyz3W)

| 最大値        | 最小値        | 平均値        | 半値角       |
| ---------- | ---------- | ---------- | --------- |
| -0.59\[dB] | -6.40\[dB] | -3.24\[dB] | 約110°(注2) |

* 指向性測定方法 2\
  ※ケーブル付属側が180°方向。

![<図：指向性測定方法2>](/files/-MfqBLYNsu1ve43wFeIR)

| 最大値         | 最小値         | 平均値         |
| ----------- | ----------- | ----------- |
| -14.31\[dB] | -18.70\[dB] | -16.59\[dB] |

* 指向性測定方法３\
  ※ロゴ側が180°方向。

![<図：指向性測定方法3>](/files/-MfqC-Xnj6imgm2WhbO2)

| 最大値         | 最小値         | 平均値         |
| ----------- | ----------- | ----------- |
| -15.00\[dB] | -20.17\[dB] | -17.11\[dB] |

* 指向性測定方法4\
  ※ロゴ側が180°方法。

![<図：指向性測定方法4>](/files/-MfqCvdMbJcQu4doVzKU)

| 最大値        | 最小値         | 平均値        | 半値角       |
| ---------- | ----------- | ---------- | --------- |
| -0.53\[dB] | -17.68\[dB] | -4.98\[dB] | 約100°(注2) |

注２：ロゴ側､半面のピーク値を基準とした半値角です。逆面､半面の半値角もほぼ同等となります。\
注３：指向性チャートの 0\[dB]は標準的なダイポールアンテナの利得です。


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://twelite.gitbook.io/mw-psd-p1447/directivity.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.