v4.4.3 BA7OPF Feature Build 1

✨ 新功能 / 改进

• 对台过境页：
  • 双向 grid ↔ 经纬度自动同步，输入 grid 自动填经纬度，输入经纬度自动填 grid
  • 仰角曲线图只画双方大于各自最小仰角的部分，低于阈值不显示，默认阈值 0°
  • 仰角曲线图可拖动，游标同步显示雷达图上的双方位置
• 线性卫星转发器：
  • 频率计算：在雷达页 Transceivers 页签下展开转发器，在 TX/RX 频率下方可见频率计算面板。支持自定义频率 Doppler 校正，输入下行频率自动计算上行频率，或输入上行频率自动计算下行频率，支持 kHz 偏移量调节
  • 内置 CW 解码器：展开转发器后在频率计算面板下方可见 CW 解码面板，实时 Morse 电码解码，支持线性转发器下 CW 信标/通联监听

✨ New Features / Improvements

• Mutual pass page:
  • Bidirectional grid ↔ lat/lon auto-sync: entering a grid auto-fills lat/lon, entering lat/lon auto-fills the grid
  • Elevation curve chart only shows the portion where both stations are above their minimum elevation; below-threshold portions are hidden, default threshold 0°
  • Elevation curve chart is draggable, cursor syncs both stations' positions on the radar plot
• Linear satellite transponders:
  • Frequency calculator: expand a transceiver under the Transceivers tab on the radar page; the calculator appears below the TX/RX frequencies. Supports custom Doppler correction — enter downlink to auto-compute uplink, or enter uplink to auto-compute downlink, with kHz offset adjustment
  • Built-in CW decoder: expand a transceiver to see the CW decoder panel below the frequency calculator. Real-time Morse code decoding for CW beacons and QSOs on linear transponders