GPS on OpenCPN

Introduction The GPS Global Positioning System is ubiquitous these days and can be even found equipped on all new smart phones. GPS information can easily be displayed on OpenCPN charts. GPS Global Positioning System The GPS system started as Navstar in the 1970s and became fully operational with at least 24 satellites continually orbiting the… Continue reading GPS on OpenCPN

WSJT-X MSK144 Demodulator – Scicos Simulation

Introduction In a previous post (Ref.1), I simulated an MSK144 modulator with Scicos. In this post, I will simulate the demodulator. Recalling the design parameters: -SSB Transceiver_USB interface (300,2700)Hz = 2400Hz-Baud Rate = 2000bdps, Tbaud = 0.500msec -MSK = Minimum Shift Keying, Frequency Shift = 0.5*BdRate = 1000Hz-Centre Freq = 1500Hz, Lower Freq = 1000Hz,… Continue reading WSJT-X MSK144 Demodulator – Scicos Simulation


Introduction EPIRB or Emergency Position Indicating Radio Beacon Station is an emergency transmitting device that blue water sailors or explorers can use in case of distress. They have proven their worth over the years and are absolutely essential for anyone wanting to wander off the grid (Ref.1). At least 2000 people have been saved every… Continue reading RTL-SDR for EPIRB