according to Range settings for the scanner and Sites/Departments. If you cycle power, all Sites/Departments are Unavoided until the scanner reacquires the GPS signal and completes the initial GPS review. Note: If you unplug your GPS device or it loses reception to satellites, the scanner will use the last known location as the current location.
天线地理坐标可从 RadioReference 数据库或 FCC 天线结构注册（ASR）网站查到（均提供经纬度、高度 与地图定位）。扫描机完成初始 GPS 巡检后，随你移动将按范围设置自动回避/启用站点与部门。若关机重 启，所有站点/部门会先全部解除回避，直到重新收到 GPS 信号并完成巡检。注意：拔掉 GPS 或卫星失锁 时，扫描机沿用最后已知位置。
🇺🇸 美版差异：美版支持"输入邮编（ZIP Code）即听"与州县选择两种无 GPS 定位方式，欧版只能手工输入经纬度 （Manual Location）或外接 GPS。另外美版手册本章还包含 GPS 波特率与位置格式设置（Set Up GPS：Baud Rate 与 Location Format）的完整说明，欧版手册在"设置菜单"中提及但细节从简——两版设置逻辑一致： Menu → Set Your Location → Set Up GPS。欧版位置数据同样支持"圆形（经纬度+范围 0–6000）与矩形"两种格式。
Trunking Discovery mode allows you to monitor a trunked radio system, logging system channel activity and recording the audio for channels. Conventional Discovery mode lets you monitor a range of frequencies, logging frequencies with activity and recording the audio for frequencies that are not already known to be in use in your area so that you can more easily identify the users. This includes frequencies used conventionally as well as in trunked radio systems. In both modes, you also have the option to compare hits to the Database and log all hits or just new hits. If you use the Auto Store option, Discovery will create a new Trunking System for IDs found for each Session or will create a new Conventional System for frequencies found for each Session. You can create and save several sessions with different settings. Every time you start a session you create a Run that can later be reviewed in the scanner or the Sentinel software.
发现模式（Discovery）用于被动侦听与记录：集群发现监视集群系统信道活动并录音；常规发现监视一段 频率范围，记录有活动的频率并为"本地尚不知用途"的频率录音，方便识别使用者（含常规与集群用频）。 两种模式都可选择"与数据库比对"以及"记录全部命中或仅新命中"。开启 Auto Store（自动存储）后，每 次会话（Session）发现的 ID 会新建为一个集群系统、发现的频率会新建为一个常规系统。可保存多个不 同设置的会话；每次启动会话产生一次 Run（运行记录），可在扫描机或 Sentinel 中回看。
NEW SESSION · 新建会话
Press Menu then scroll to Discovery and press E/yes. Scroll to Trunking Discovery or Conventional Discovery and press E/yes. Scroll to New Session and press E/yes.
路径： Menu → Discovery → Trunking Discovery（集群）/ Conventional Discovery（常规）→ New Session（新建会话）。
Conventional Discovery: Input Session Name – Enter the Name and press E/yes. See Data Naming. Trunking Discovery: Input System Name – Enter the first few relevant letters of the system and press E/yes. Note: The System must be enabled for scan to input system name. Select System – Scroll to the System and press E/yes. Select Site – Scroll to the Site and press E/yes. Input Session Name – Enter the Name and press E/yes.
常规发现：输入会话名称（数据命名法）。集群发现：① 输入系统名称（输入前系统需已启用扫描）→ ② 选择系统 → ③ 选择站点 → ④ 输入会话名称。
SESSION OPTIONS · 会话选项
Press Menu then scroll to Discovery and press E/yes. Scroll to Trunking/Conventional Discovery and press E/yes. Scroll to the Discovery Session and press E/yes.
路径： Menu → Discovery → 选择集群/常规发现 → 选择会话进入。会话选项如下：
选项 / Option 英文原文（EN） 中文译文（CN）
Start Discovery This starts the Discovery Session. Press 启动会话。 Menu 停止并查看运行信 Menu to stop and review the Run 息； Avoid 回避命中； Func + information. See Review Discovery. Press System 退出。 Avoid to Avoid a hit. Press Func then System to exit.
Edit Session Name This allows you to name a Session. See 重命名会话。 Data Naming.
Set Limit Frequencies This sets the lower and upper frequencies 设定常规发现的频率下限/上限。 （仅常规） for conventional discovery session. Set Lower Limit / Set Upper Limit.
Set Modulation Auto, AM, FM, NFM, WFM, or FMB (FM 调制方式： （仅常规） Broadcast).
Set Step Auto, 5, 6.25, 7.5, 8.33, 10, 12.5, 15, 20, 25, 步进：Auto 或 5–100 kHz。 （仅常规） 50, or 100 kHz.
Set Delay This sets the Delay when monitoring a site 监听延迟：0–5 秒。 or frequencies. 0, 1, 2, 3, 4, or 5 sec.
Set Logging This will log all hits or just new hits. All or 记录全部命中 / 仅新命中。 New Only.
Set Compare to Select On to compare hits against the 与数据库比对：On=仅新频道录音； Database channels already in the Database. Only Off=所有命中都当新频道。 new channels will have audio recorded (if enabled). Select Off to treat all hits as new channels. On or Off.
Set Record Duration None, 30, 60, 90, 120, 150, 180, 300, or 每个新频道录音时长：无/30–600 秒。 600 sec.
Set Time-Out Timer This is used to keep a stuck channel from 超时定时器：防止"卡死"信道独占整个 stealing the whole Run in a session. Off, 运行。关/10/30/60 秒。 10, 30, or 60 sec.
System Information This will give you where it came from, 显示系统来源（完整数据库/收藏列 （仅集群） (Full Database or Favorites List), the 表）、系统类型（Motorola/P25 等） System Type, (Motorola, P25, etc.), and 与所用系统。 the System used for the Discovery Session.
Set Auto Store This turns Auto Store on and will create a 自动存储：自动创建名为 System called Conventional or Trunking "Conventional/Trunking Discovery" Discovery. On or Off. 的系统保存发现结果。
Delete Session This deletes the session. At Confirm 删除会话（有确认提示）。 Delete? Press E/yes or ./no.
Change System This allows you to create or change the 更换会话所用系统/站点：可输入新系统 （仅集群） System used and change the Site used for 名（已保存则按 E/yes 跳过）→ 选 the session. Input System Name – Press 择系统 → 选择站点。 E/yes to Skip if System is saved. Select System / Select Site.