频率范围 138.0 - 138.9 MHz - 频率范围搜索

频率范围简介

暂无频率范围简介

频率明细

  • 类型
    起始频率
    中心频率
    终止频率
  • 太赫 (TeraHertz)
    0.000138 THz
    0.00013845 THz
    0.0001389 THz
  • 吉赫 (GigaHertz)
    0.138 GHz
    0.13845 GHz
    0.1389 GHz
  • 兆赫 (MegaHertz)
    138 MHz
    138 MHz
    139 MHz
  • 千赫 (KiloHertz)
    138000 KHz
    138450 KHz
    138900 KHz
  • 赫兹 (Hertz)
    138000000 Hz
    138450000 Hz
    138900000 Hz
  • 波长 (Wavelength)
    2.17 m
    2.17 m
    2.16 m
  • 周期 (Period Time)
    7.246377 ns
    7.222824 ns
    7.199424 ns

频率波段

ITU Radio Bands

  • Band
    Band Name
    Lower Frequency (MHz)
    Upper Frequency (MHz)
    Wavelength
    Note
  • VHF
    Very High Frequency
    30
    300
    10 m – 1 m
    FM radio, TV, airband communication, walkie-talkies

IEEE Standard 521-2002 Bands

  • Band
    Band Name
    Lower Frequency (MHz)
    Upper Frequency (MHz)
    Wavelength
    Note
  • VHF
    Very High Frequency
    30
    300
    10 m – 1 m
    Ground surveillance radar, ship navigation radar

EU, NATO, US ECM Radio Bands

  • Band
    Band Name
    Lower Frequency (MHz)
    Upper Frequency (MHz)
    Wavelength
    Note
  • A
    Very Low Frequency
    0
    250
    1.2 m – ∞
    Submarine communication, navigation, ELF signaling and deep penetration signals

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