Anyone using a VNA in the workshop will find SimSmith an excellent tool. By combining the analysis of S parameters from a VNA with a circuit simulator, SimSmith becomes a powerful tool for designing matching circuits. In this post, I’ll[…]Click to read more..
Raspberry Pi – Update to WSJT-X 2.3.0
WSJT-X 2.3.0 introduces a new logging system that requires the installation of some additional packages. As a result, upgrading is not quite as simple as with previous versions. Here’s a step by step guide. Begin by updating the operating system[…]Click to read more..
Troubleshooting systemd Services
Raspbian, like most Linux distributions, has changed to using systemd as the primary software suite to control the Linux system. Part of systemd’s responsibilities include running the services that provide much of the Linux functionality. Systemd is also the ideal[…]Click to read more..
Raspberry Pi – Transfer WSJT-X, JS8Call and FLDIGI settings to a new image
Several customers have asked me how they can move their settings and macros from one Pi image to another. This post attempts to simplify the process. To preserve your settings, you just need to copy a few files from the[…]Click to read more..
NanoVNA Saver on the Raspberry Pi
NanoVNA Saver is an excellent package that provides a host of useful featuers for owners of the NanoVNA V1 and V2. When looking around the Internet for Pi installation instructions, I found several conflicting and out-of-date posts, so decided to[…]Click to read more..
Raspberry Pi MotioneyeOS with BlueIris Security
The MotioneyeOS image for the Raspberry Pi makes a great, stand-alone, security camera or a wildlife camera. However, I wanted to be able to use the video stream as part my BlueIris video surveilance system. After much searching, I found[…]Click to read more..
FLDIGI fails to start with a fatal error
I recently has a case where one of my Austrian customers was using my Data Modes card but couldn’t start FLDIGI. When starting from the desktop, FLDIGI would show no response. When started from the command line, it would fail[…]Click to read more..
Raspberry Pi – Multiple Instances of RTLSDR as a Service
My Raspberry Pi RTL Dongle server cards run the server as a service under systemd. This has several benefits including a better-defined start and the facility to stop/restart a service gracefully. One of my customer recently asked if it was[…]Click to read more..
WSJT-X 2.3 – Transmit Audio Failure with PiOS
Thanks to a report from John, GM0WRR, I have identified a problem with WSJT-X 2.3 and the use of PulseAudio on the Raspberry Pi. When setting the input and output soundcard you would normally set both to pulse. However, if[…]Click to read more..
Installing & upgrading CQRLOG on a Raspberry Pi
Updated 17 July 2020 to add missing wildcards from the apt install line! CQRLOG is one of the most complete contact logging programs for Linux and the Raspberry Pi, but building the latest version from source can be problematic. In[…]Click to read more..
Unstable Raspberry Pi – Taming the Power Supply
I frequently get asked to help with, seemingly random, behaviour of the Raspberry Pi. By far the most common cause is the power supply. Whilst the use of a USB socket for the power supply connection is very convenient, it[…]Click to read more..
Raspberry Pi – Update to WSJT-X v2.0.0
Version 2.0.0 of WSJT-X brings several new enhancements but is incompatible with previous versions of WSJT-X. As a result, all users must update to version 2.0.0. The update process shown below can also be used for a new installation. In[…]Click to read more..