Category: Electronics

Introduction In previous posts I looked at various aspects of GMDSS/DSC using Scicos (Ref.2/7). In the last post I built a BFSK Random Data Generator on GNU Radio and in this post I use the random data produced to test a BFSK BPF decoder on GNU Radio. BFSK BPF Decoder Schematic Figure 1 shows the… Continue reading Marine GMDSS/DSC VHF Decoder_b

Introduction In previous posts I have looked at various aspects of GMDSS/DSC using Scicos. In this post I look at a BFSK generator for DSC VHF using GNURadio. The advantage of GNURadio is that it can be directly interfaced with the RTL-SDR and can decode in real time. GNURC Schematic Parameter DSC VHF BFSK Fc… Continue reading BFSK Generator on GNURadio

Introduction In previous posts I looked at receiving GMDSS/DSC HF & VHF signals using a Windows 10 laptop with SDRangel & Multipsk as well as a RaspberryPi4B with Gqrx & GNURadio (Ref.1/5). I also simulated the VHF DSC signal using Scicos (Ref.2). In this post I will make an initial pass at decoding the VHF… Continue reading Marine GMDSS/DSC VHF Decoder_a

Introduction In previous posts several years ago, I looked at receiving NOAA15/18/19 satellite weather using various configurations with a Windows 10 laptop and a RaspberrPi4 (Ref.1/4). To bring in the new year, I thought I would check out the latest reception. In the last post I used SDR# with noaa_apt & wxtoimg (Ref.1). In this… Continue reading RTL-SDR for NOAA15/18/19 Satellite Weather_b

Introduction In previous posts several years ago, I looked at receiving NOAA15/18/19 satellite weather using various configurations with a Windows 10 laptop and a RaspberrPi4 (Ref.1/4). To bring in the new year, I thought I would check out the latest reception. Equipment Setup Figure 1 shows the equipment setup for receiving NOAA15/18/19 satellite weather. In… Continue reading RTL-SDR for NOAA15/18/19 Satellite Weather_a