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Navigation Telecommunications

OpenPlotter – GPS Connection

Introduction OpenPlotter (Ref.1) is a Linux based Operating System that runs on the Raspberry Pi computer. The Raspberry Pi is extremely popular in the education field. It is well documented, compact and requires very little power. This makes it ideal to form the basis of an electronics navigation system for a small craft. In the […]

Categories
Navigation Telecommunications

OpenPlotter – Navigation System on RPi

Introduction OpenPlotter (Ref.1) is a Linux based Operating System that runs on the Raspberry Pi computer. The Raspberry Pi is extremely popular in the education field. It is well documented, compact and requires very little power. This makes it ideal to form the basis of an electronics navigation system for a small craft. Installation The […]

Categories
Navigation Telecommunications

RTL-SDR Front End Scicos Simulation

RTL-SDR Front End Block Diagram The RTL-SDR receiver is a simple but very useful device. It can receive signals from 25MHz to about 1700MHz. The Front End block diagram is shown in Figure 1. Receive signals come into the antenna port, are amplified by an LNA low noise mplifier, then RF BPF band pass filtered […]

Categories
Navigation Telecommunications

RTL-SDR Antennas & Connectors

RTL-SDR Versions The RTL-SDR receiver is a simple but very useful device. It can receive signals from 25MHz to about 1700MHz. Various versions exits. Figure 1 shows the two that I have. The first version was purchased about 7 years ago, and consists of a plastic dongle with a USB connector on one end and […]