存储信道频谱显示 24 CHAPTER Memory Channel Scope
本章要点:存储信道频谱显示(Memory Channel Scope)把"信道号"而不是连续频率作为横轴,以当前存储信道为中心,用柱 状图一次性显示上下相邻共 43 个信道的信号强度,用来快速判断哪条存储信道上正在有人活动。本章说明它的用途、与常规频谱 显示的区别以及查看步骤。
24-1 Purpose of the Memory Channel Scope · 用途
存储信道频谱显示以当前存储信道为中心,呈现其上、下 The Memory Channel Scope presents a view of operating 相邻信道上的工作活动情况。 activity on channels above and below the current memory channel as the center.
24-2 How It Differs from the Normal Spectrum Scope · 与常规频谱显示的区别
常规频谱显示是在一段连续的频率范围内扫掠,而存储信 While the normal spectrum scope sweeps a continuous 道频谱显示是"逐信道"显示的:以当前存储信道为中心, range of frequencies, the Memory Channel Scope steps 用图形显示 43 个信道带宽范围内的信号强度。触摸其中 through memory channels: with the current memory 一根柱子,即可直接选中对应的存储信道。 channel in the center, the signal strengths of 43 channels bandwidth are shown on a graph. One touch on a bar selects that memory channel directly.
表 24-1 两种频谱显示方式的对比 Table 24-1 Memory Channel Scope versus the normal spectrum scope
对比项Item 存储信道频谱显示Memory Channel Scope 常规频谱显示Normal spectrum scope
以当前存储信道为中心的上下相邻信道(共 43 横轴 连续频率范围 个信道)
看什么 哪些已存的存储信道上正在有信号 当前频率附近频谱上的信号分布
触摸图形上的信号,或转 MAIN DIAL 旋钮,即 选中方式 需用旋钮把频率调到目标信号处 可把该信道设为接收信道并置于中心
适用场合 在已存的一批信道里快速找活跃信道 在一段频率里找空闲位置、观察带宽与干扰
24-3 Displaying the Memory Channel Scope · 查看存储信道频谱
1. 按下 SUB DIAL 旋钮,切换到 MAIN 侧。 1. Press the SUB DIAL knob to change MAIN-side. 2. 按 [V/M] 键进入存储模式。 2. Press the [V/M] key to enter the memory mode. 3. 长按 SUB DIAL 旋钮。此时以当前存储信道为中心, 3. Press and hold the SUB DIAL knob. With the current 用图形显示 43 个信道带宽范围内的信号强度。 memory channel in the center, the signal strengths of 4. 要关闭存储信道频谱显示,再次长按 SUB DIAL 旋 43 channels bandwidth are shown on a graph. 钮。 4. To turn the Memory Channel Scope OFF, press and hold the SUB DIAL knob.
触摸频谱画面上的某个信号时,该存储信道即成为接 When a signal on the scope screen is touched, the 收信道,并被设为频谱显示的中心信道。 memory channel becomes the receive channel, and is 也可以转动 MAIN DIAL 旋钮来改变接收的存储信道。 set to the center memory channel of the scope. The receive memory channel may also be changed by turning the MAIN DIAL knob.
HAM 实战 · 技术提示 FIELD NOTE
这个功能本质上是"给存储列表配了个活动指示灯":外出架台时把当地中继、常用频点、俱乐部频点存进一批信道,再打开存 储信道频谱,一眼就能看出哪条信道上有人,触摸柱子直接切换过去,比一条条旋钮翻过去快得多。注意它显示的是"已存信 道"上的活动,没存进去的频率不会出现在图上;想看整段频率的占用情况仍需用常规频谱显示。(社区经验) Think of this as an activity indicator for your memory list: store the local repeaters, favourite frequencies and club channels, then open the Memory Channel Scope and you can see at a glance which of them is busy, and touch a bar to jump straight there — far faster than spinning the dial through channels. Remember that it only shows activity on channels you have already stored; frequencies you never stored will not appear. Use the normal spectrum scope when you need to survey a whole frequency range. (community-reported)
PART VI
第六部分进阶功能 Advanced Functions
把机器用到位的地方:蓝牙、话筒均衡器、接收音频滤波、DG-ID / DP-ID、CTCSS / DCS、DTMF、GPS、VOX、microSD 与固件维护、外置天调,以及最后的复位与抢救手段。
25 蓝牙操作 Bluetooth Operation
26 参数话筒均衡器 Parametric Microphone Equalizer
27 可调接收音频滤波器 Adjustable Receiver Audio Filter
28 DG-ID 与 DP-ID Digital Group ID / Digital Personal ID
29 模拟 FM 选呼(CTCSS / DCS) Tone Squelch & DCS in Analog FM
30 DTMF 操作 DTMF Operation
31 GPS 功能 Using the GPS Function
32 VOX 与免提操作 VOX Operation
33 其他实用功能 Other Useful Functions
34 外部天调与选购件 External ATU & Optional Accessories
35 复位与维护 Resetting the Microprocessor