Ultra low frequency are the electromagnetic waves that ranges 300Hz to 3mHz. ULF use is no new for technology,in the past it has been used for military purposes in war times for connecting submarines,radars,air crafts etc.AMEBA(a mechanically based antenna) is doing research in developing a portable device to assist the rescue and science work other military uses.Its frequency varies from 3Hz-3mHz and very low frequency 3kHz-30kHz
Functions of ULF portable device:
user friendly device
text massage communication
It is radio device that has been used since last many year.Its equipment is very space taking and unable to move at different the innovation of development of this new device is it gives an antenna consist of radio signal with coverage to far flung area where is no conventional communication media works.