Rajnath Singh laid foundation stone for 2,900-acre Very Low Frequency (VLF) station in Telangana Tuesday. Apart from the new station, India has a VLF facility in Tirunelveli.

Land-based VLF sites and E-6B Mercury strategic command post aircraft, also known as doomsday planes, are currently used to pass those messages along to Ohio SSBNs. An E-6B Mercury aircraft. DOD ...

The most prominent feature will be a long wire extended from the tail attached to a drogue on the end. This will enable VLF communications at frequencies of 3-30 kHz with submerged submarines.