📶 U+1F4F6 Unicode文字
Unicode
U+1F4F6
📶
数値文字参照
📶 📶
URLエンコード(UTF-8)
%F0%9F%93%B6
ユニコード名
ANTENNA WITH BARS
一般カテゴリ－
Symbol, Other（記号，その他）
Base64エンコード : 8J+Ttg==
「📶」に似ている意味の文字
📶の説明
📶
絵文字
無線通信機器の電波状況を表す記号。
バリ3。
文字情報
文字コード
Unicode
16進: 1F4F6 📶
10進: 128246 📶
異体字セレクタ
※これらは閲覧環境によっては正しく表示されないことがあります。[出典:Wiktionary]
A mobile phone signal (also known as reception and service) is the signal strength (measured in dBm) received by a mobile phone from a cellular network (on the downlink). Depending on various factors, such as proximity to a tower, any obstructions such as buildings or trees, etc. this signal strength will vary. Most mobile devices use a set of bars of increasing height to display the approximate strength of this received signal to the mobile phone user. Traditionally five bars are used. (see five by five)Generally, a strong mobile phone signal is more likely in an urban area, though these areas can also have some "dead zones", where no reception can be obtained. Cellular signals are designed to be resistant to multipath reception, which is most likely to be caused by the blocking of a direct signal path by large buildings, such as high-rise towers. By contrast, many rural or sparsely inhabited areas lack any signal or have very weak fringe reception; many mobile phone providers are attempting to set up towers in those areas most likely to be occupied by users, such as along major highways. Even some national parks and other popular tourist destinations away from urban areas now have cell phone reception, though location of radio towers within these areas is normally prohibited or strictly regulated, and is often difficult to arrange.
In areas where signal reception would normally be strong, other factors can have an effect on reception or may cause complete failure (see RF interference). From inside a building with thick walls or of mostly metal construction (or with dense rebar in concrete), signal attenuation may prevent a mobile phone from being used. Underground areas, such as tunnels and subway stations, will lack reception unless they are wired for cell signals. There may also be gaps where the service contours of the individual base stations (Cell towers) of the mobile provider (and/or its roaming partners) do not completely overlap.
In addition, the weather may affect the strength of a signal, due to the changes in radio propagation caused by clouds (particularly tall and dense thunderclouds which cause signal reflection), precipitation, and temperature inversions. This phenomenon, which is also common in other VHF radio bands including FM broadcasting, may also cause other anomalies, such as a person in San Diego "roaming" on a Mexican tower from just over the border in Tijuana, or someone in Detroit "roaming" on a Canadian tower located within sight across the Detroit River in Windsor, Ontario. These events may cause the user to be billed for "international" usage despite being in their own country, though mobile phone companies can program their billing systems to re-rate these as domestic usage when it occurs on a foreign cell site that is known to frequently cause such issues for their customers.
The volume of network traffic can also cause calls to be blocked or dropped due to a disaster or other mass call event which overloads the number of available radio channels in an area, or the number of telephone circuits connecting to and from the general public switched telephone network.[出典:Wikipedia]
📶の文字を使った例文
📶 在今天的世界中，网络信号的重要性是不言而喻的。无论是我们的手机、电脑，还是各种高科技通讯设备，都离不开网络信号的支持。它为我们的生活带来了便利，也让我们的生活更加多姿多彩。 📶 在过去，网络信号的稳定性并不如今天这么好，我们经常会遇到网络信号不稳定，甚至掉线的情况。那时，我们还需要手动调整信号，获取更稳定的连接。但随着技术的不断发展，现在的网络信号已经越来越稳定和快速。📶 比如说，现在有不少的家庭和企事业单位都使用了5G网络，该技术的传输速度更是能够达到超高的水平。同时，我们也经常听到一些人吐槽地铁信号弱，但这些也都有一定的解决方案。比如，地铁公司可以通过高清材质的覆盖板，在地铁隧道中加强网络信号，这样就能确保旅客在隧道中也可以使网络通畅了。📶 然而，像这样的通讯设备、网络信号等等，也伴随着一些问题。比如，短信诈骗、恶意攻击等都会给我们的安全带来一定的隐忧。就拿手机网络信号来说，如果我们的手机被黑客攻击，那么手机网络信号也就会被攻击者所把控。这时，攻击者就可以通过掌控手机来获得我们的个人隐私或是进行其他非法活动。📶 在这一点上，我们需要有更多的技术的创造。我们需要更加便捷的安全机制，保证网络信号的畅通和安全。当然，并非所有技术都是解决问题的印钞机，所以，每个人也需要时刻为自己的安全着想，提高安全意识。📶 总的来说，网络信号是我们的重要通讯媒介，它不止为我们的工作、生活带来便利，同时也关系到我们的个人安全。我们应该认真对待网络安全问题，并尝试提高我们的安全意识。相信在未来，我们将会使用更加高速、更加稳定、更加安全的网络信号。📶(この例文はAIにより作成されています。特定の文字を含む文章を出力していますが内容が正確でない場合があります。)