Category: Navigation

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… Continue reading 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. Installation The… Continue reading OpenPlotter – Navigation System on RPi

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… Continue reading RTL-SDR Antennas & Connectors

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

Introduction The RTL-SDR receiver is a simple but very useful device. It can receive signals from 25MHz to about 1700MHz. It can be used to scan the aircraft VHF AM voice band from 118 to 137MHz and then the Marine VHF FM band from 156 to 164MHz. VHF Air AM Voice Frequency Band The VHF… Continue reading RTL-SDR for VHF Air & Marine Bands