Russian VLF Alpha RSDN-20 Navigation System | Signal Phantom

Russian VLF Alpha RSDN-20 Радиотехническая Система Дальней Навигации navigation system signal, shown with carrier pulses on exact F1 11904.76190Hz; F2 12648.80952Hz; F3 14880.95238Hz part of a Hyperbolic Radio Navigation system deployed in use by navy Fleet ops. The Russian Hyperbolic radio navigation or hyperbolic positioning, is a radio-based navigation technique that uses the time difference between signals received from two or more fixed ground-based transmitters to determine the location of a receiver. Related signal possibly now on 4612 kHz. For additional Russian signals see @SignalPhantom recorded by Tyler Stampfli, KA0KA for SignalPhantom.com