Very Low Frequency (VLF) refers to radio frequencies in the range of 3 kHz to 30 kHz. Because of their long wavelength, VLF waves can penetrate water and propagate long distances, making them useful for submarine communication. They are also used for time signals and geophysical research. VLF signals are subject to atmospheric noise and require large antennas for efficient transmission and reception.
Whether you're looking to get your foot in the door, find the right person to talk to, or close the deal — accurate, detailed, trustworthy, and timely information about the organization you're selling to is invaluable.
Use Sumble to: