HD VLF-HF Receiver

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Very Low Frequency (VLF) is the means of long-range reliable communication from Indian mainland to distributed ships and submerged submarines. Indian Navy established a VLF Transmitting station at INS Kattabomman for this purpose. Limited bandwidth of the large transmit antenna is a major challenge in achieving enhanced information transfer rate over this link. Advanced VLF Communication system is a solution to this challenge which is able to achieve reliable text data communication up to 600 bps in available 200 Hz bandwidth by use of modern communication signal processing techniques. The system has the dual capabilities of MSK Demodulation in VLF mode and HF reception in HF mode.