very low frequency


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Related to very low frequency: medium frequency
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Synonyms for very low frequency

3 to 30 kilohertz

References in periodicals archive ?
The system's very low frequency transmitters offers one-way communications to submarines at speed and depth underwater.
It is a source of environmental concern because it can blast very loud (235 decibels), very low frequency (100 to 500 hertz) sound over thousands of square miles of ocean.
The power sensor's low-frequency range is also useful for measuring transmitter power and receiver sensitivity in the installation and maintenance of very low frequency (VLF) to high-frequency (HF) radios.
Contract Awarded or work on the B-2 Common Very Low Frequency Receiver Increment 1 Engineering Manufacturing Development Effort
TCO'92 was designed to protect office workers who use desktop monitors daily, calling for strict compliance to ergonomic monitor design and to very low frequency (VLF) and extremely low frequency (ELF) emissions.
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