ELF (Extremely Low Frequency)

ELF radio has a frequency of 30–300 Hz and a wavelength of

10,000–1,000 km. ELF radio has application in submarine radio communications. See also electromagnetic spectrum, frequency, Hz, and wavelength.

• vBNS (very-high-speed Backbone Network Service)
• VBR (Variable Bit Rate)
• VC
• VCI (Virtual Channel Identifier)
• VCO (Voice Carry Over)
• VCO (Voice Carry Over)
• VCSEL (Vertical Cavity Surface-Emitting Laser)
• VCSEL (Vertical Cavity Surface-Emitting Laser)
• VDSL2 (Very-high-data-rate Digital Subscriber Line version 2)
• VDSL (Very-high-data-rate Digital Subscriber Line)
• vector
• vector quantization
• vector quantizing code (VQC)
• vector sum excited linear predictive coding (VSELP)
• velocity of light
• velocity of propagation (Vp)
• Veronica (Very Easy Rodent-Oriented Net-wide Index to Computerized Archives)
• vertical cavity surface-emitting laser (VCSEL)
• vertical redundancy check (VRC)
• very-high-data-rate digital subscriber line (VDSL)
• Very High Frequency (VHF)
• very-high-speed Backbone Network Service (vBNS)
• Very Low Frequency (VLF)
• very small aperture terminal (VSAT)
• vestigial sideband (VSB)