Author: Jeremy Clark

Introduction Recently I have been looking at propagation prediction. I read a very interesting article about propagation drive testing, so I thought I would check my existing GPS units for suitability. Since I replaced my Win7 laptop with a Win10 laptop several years ago, a key thing changed. The original FTDI drivers for various devices… Continue reading GPS/GNSS Receiver Testing

Introduction In a recent post I was considering a hypothetical 2m amateur radio repeater and studying its VHF coverage with a Yagi antenna (Ref.1). In the process I read an article describing the difference in results of using the Longley-Rice & ITWOM propagation models (Ref2). The researchers used the Radio Mobile program developed by Roger… Continue reading VHF Marine Propagation with Radio Mobile

Introduction Splat! (Ref.1) is a very versatile propagation prediction program that I discussed in several previous posts. In my first post, I looked at installation on Windows and Linux, how to obtain the digital elevation data files, create .qth & .lrp files, and run a simple point to point analysis (Ref.2). In the second and… Continue reading Splat! – Antenna Patterns