Introduction In a recent post I looked at getting started with the Si5351A Clock Generator (Ref.1). In order to proceed quickly, I used an Adafruit module with the Si5351A and an onboard 25MHz crystal clock. The module was interfaced with an Arduino Uno and programmed with software from the Adafruit library. This produced 3 frequencies… Continue reading Si5351 Clock Generator Programming+
Category: Electronics
Electronics: Hardware, Simulation Software, Microcontrollers
RTL-SDR for Marine GMDSS/DSC on RaspberryPi4
Introduction In my last post I looked at using the RTL-SDR for receiving Marine GMDSS/DSC signals on HF/VHF (Ref.1). Reception was done using Multipsk on Windows 10. In this post I examine using the RTL-SDR as a stand alone Marine VHF DSC receiver operating on the RaspberryPi4B. The RaspberryPi4B is configured for remote operation off… Continue reading RTL-SDR for Marine GMDSS/DSC on RaspberryPi4
RTL-SDR for Marine GMDSS/DSC on MULTIPSK
Introduction Recently I received an interesting question from Scott in Vancouver about Marine Channel 70 and DSC Digital Selective Calling. DSC is a part of the GMDSS Global Maritime Distress and Safety System (Ref.1/2). It can be used by ships on the MF/HF bands or in the VHF band. The ship MMSI identifier can be… Continue reading RTL-SDR for Marine GMDSS/DSC on MULTIPSK
RTL-SDR for FT8 on MULTIPSK
Introduction In the last few posts (Ref.1/4), I examined the WSJT-X protocols FT8 & WSPR using the RTL-SDR, HRF1 and PlutoSDR. In this post I will look at receiving FT8 using the RTL-SDR and MULTIPSK (Ref.5). MULTIPSK is an incredibly versatile Ham Radio software program that has recently added FT4rx, FT8rx & WSPR to it’s… Continue reading RTL-SDR for FT8 on MULTIPSK
PlutoSDR for WSPR Beacon on GNU Radio
Introduction In the previous three posts, I looked at WSPR & FT8 as part of the WSJT-X protocol suite (Ref.1/2/3). In the last post, I tested the feasibility of using the HRF1 as a WSPR beacon. In this post I look at the possibility of using the PlutoSDR as a WSPR beacon. PlutoSDR specs indicate… Continue reading PlutoSDR for WSPR Beacon on GNU Radio