Modern day radio transmitters and receivers, the devices that uses electromagnetic wave signals to communicate through cellphones, radios and television, seem to be present everywhere.  The propagation of these electromagnetic waves has some limitation too,   Key among these is that radio frequency signals hit veritable and literal walls when they …

Australian Airforce is making investments into range of state-of-the-art surveillance, command-and-control and combat platforms. This includes introduction of advanced capabilities such as the F-35A Lightning II, EA-18G Growler, P-8A Poseidon, the MQ-4C Triton, and space systems including a space situational radar and space telescope. Moreover, Navy and Army are currently …

During the 1999 Kargil War, operations of Indian Air Force to evict the intruding Pakistani soldiers from the Indian side of the border,  were hampered as the only combat helicopter, the Mi-35, couldn’t operate at extremely high altitudes. IAF had to tell the Army that it had no helicopters that …