Introduction Recently I read several posts on various amateur radio forums regarding the reception of Shortwave Radiogram broadcasts. VOA Radiogram was a Voice of America program that experimented with various digital transmission modes, starting in March 2013. It was superseded by Shortwave Radiogram (Ref.1). I decided I would try reception using the very popular RTL-SDR… Continue reading RTL-SDR for Shortwave Radiogram
Category: Telecommunications
Telecommunications: Propagation, HF, VHF, UHF, uWave
I2C Programming & Scope Detection
Introduction Recently I have been working with various sensors such as a magnetometer, gyroscope and accelerometer for use in navigational systems (Ref.1). All these sensors are accessed using the I2C protocol. Over the past several years I have worked with various HF synthesizers that were also programmed via I2C. I used a Tektronix TDS210 digital… Continue reading I2C Programming & Scope Detection
OpenPlotter – RTL-SDR for VHF/AIS
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 – RTL-SDR for VHF/AIS
OpenPlotter – AIS 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… Continue reading OpenPlotter – AIS Connection
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… Continue reading OpenPlotter – GPS Connection