In a previous post Ref.1 I looked at VOACAP and it’s use in a simple off air receive situation. In this post I will delve a little further into the software and compare the results against some simple mathematical models. VOACAP (Voice of America Coverage Analysis Program) is free professional high-frequency (HF) propagation prediction software […]

A quick overview of the HF High Frequency Radio Development environment of amateur radio station VE3PKC showing instrumentation, SDR radios and Amateur Radio transceivers and antennas. Video – HF Development at VE3PKC Download “HF High Frequency Radio Telecommunications Learn by Simulation”

## VOACAP – CHU to VE3PKC

VOACAP (Voice of America Coverage Analysis Program) is free professional high-frequency (HF) propagation prediction software from NTIA/ITS, originally developed for Voice of America (VOA). In this video we will study the propagation between the time signal station CHU located in Ottawa Canada with a receiver located at VE3PKC in Toronto Canada. The actual received signal […]

## Scilab & ScicosLab – HF Loop Bearing

Scilab and ScicosLab are Open Source Math Programs that can be used in various engineering and scientific applications. In this post I look at how ScicosLab can be used to calculate the Great Circle Distance and Bearings between any two points on a sphere. In particular I will calculate the GCD/Bearings between the Time Station […]

Scilab and ScicosLab are Open Source Math Programs that can be used in various engineering and scientific applications. In this post I look at how ScicosLab can be used to solve problems with the Spherical Triangle. In Celestial Navigation, problems arise in solving the Plane Triangle and also the Spherical Triangle. Video ScicosLab for the […]