Mike Richards G4WNC

Posted on 5th January 20235th January 2023 by Mike Richards — 1 Comment

WSJT-X vs JTDX test results and source file

The following links contain the audio recording and the Excel spreadsheet used for my WSJT-X vs JTDX comparison. WSJTX-JTDX-CompDownload The following link will download the audio file (WAV format) used for the performance comparison. This was recorded in the late afternoon of 31st December 2022. FT-8-Comp-31-12-22-5minsDownload

The following links contain the audio recording and the Excel spreadsheet used for my WSJT-X vs JTDX comparison. The following link will download the audio file (WAV format) used for the performance comparison. This was recorded in the late afternoon[…]Click to read more..

Posted on 20th August 202220th August 2022 by Mike Richards — Leave a comment

Use Raspberry Pi Imager to burn zip file images

The excellent Raspberry Pi Imager software is ideal for burning zipped operating system images to a SD card or hard drive. There’s no need to unzip the file as Imager does it for you. Here’s the step-by-step process: Download the free Imager from here: Raspberry Pi Imager software: Double-click the downloaded file to install the…

The excellent Raspberry Pi Imager software is ideal for burning zipped operating system images to a SD card or hard drive. There’s no need to unzip the file as Imager does it for you. Here’s the step-by-step process: Download the[…]Click to read more..

Posted on 15th June 202215th June 2022 by Mike Richards — Leave a comment

Reset Admin password for Zabbix web server

Zabbix is an excellent monitoring tool for larger computer networks but there are times when the Admin password needs to be reset. Fortunately, this is easy to do with the following steps: Open Mysql or whatever database you are using. For MySql use: mysql.exe -uroot -pEnter the following line, but change ‘mynewpassword’ to your new…

Zabbix is an excellent monitoring tool for larger computer networks but there are times when the Admin password needs to be reset. Fortunately, this is easy to do with the following steps: Open Mysql or whatever database you are using.[…]Click to read more..

Posted on 8th June 20228th June 2022 by Mike Richards — 2 Comments

Test files for the FT-8 performance comparison.

In the August Data Modes column in PW I will be comparing the decoding performance of WSJT-X, JTDX, MSHV and WSJT-Z. For those that want to run similar tests, I’ve uploaded my test files to DropBox and they are available HERE post.

In the August Data Modes column in PW I will be comparing the decoding performance of WSJT-X, JTDX, MSHV and WSJT-Z. For those that want to run similar tests, I’ve uploaded my test files to DropBox and they are available[…]Click to read more..

Posted on 21st May 20223rd July 2022 by Mike Richards — Leave a comment

Raspberry Pi Unreliable WiFi & Power Saving

When using the Raspberry Pi over marginal Wi-Fi links I have experienced problems with the Pi dropping the network entirely. When that happens the only fix is a reboot. After much searching, it would appear that the Wi-Fi power save feature may be contributing to the problem. The Wi-Fi power save is enabled by default…

When using the Raspberry Pi over marginal Wi-Fi links I have experienced problems with the Pi dropping the network entirely. When that happens the only fix is a reboot. After much searching, it would appear that the Wi-Fi power save[…]Click to read more..

Posted on 10th May 202210th May 2022 by Mike Richards — Leave a comment

Front & rear panel graphics for the NanoKeyer

The NanoKeyer by Oscar, DJ0MY is an excellent project for which Oscar can supply blank PCBs. These are designed to fit in a Fischer case, which is, unfortunately, not available in the UK. However, there is a smaller alternative Fischer case that is available from Farnell. Here are the case details Farnell order code: 2481096…

The NanoKeyer by Oscar, DJ0MY is an excellent project for which Oscar can supply blank PCBs. These are designed to fit in a Fischer case, which is, unfortunately, not available in the UK. However, there is a smaller alternative Fischer[…]Click to read more..

Posted on 28th April 202228th April 2022 by Mike Richards — Leave a comment

GoPro Hero 10 WebCam on Windows 11

Having recently changed to a GoPro Hero 10, I was disappointed to find that the GoPro WebCam application doesn’t work on Windows 11. This is a driver problem that GoPro has yet to fix. Fortunately, there’s a quick fix that will get the camera working again. Here are the steps to take: Make sure the…

Having recently changed to a GoPro Hero 10, I was disappointed to find that the GoPro WebCam application doesn’t work on Windows 11. This is a driver problem that GoPro has yet to fix. Fortunately, there’s a quick fix that[…]Click to read more..

Posted on 22nd February 202228th November 2022 by Mike Richards — 4 Comments

Installing Unsigned Drivers on Windows 10 or 11

There may be occasions where you need to install unsigned drivers on a Windows PC. This can be achieved using several methods, but my recommended technique is to temporarily disable the Windows driver signing enforcement. This is easy to do and exposes your PC for the minimum amount of time. I’ve shown step-by-step instructions below.…

There may be occasions where you need to install unsigned drivers on a Windows PC. This can be achieved using several methods, but my recommended technique is to temporarily disable the Windows driver signing enforcement. This is easy to do[…]Click to read more..

Posted on 13th May 2021 by Mike Richards — Leave a comment

SimSmith on the Raspberry Pi

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 show you how to install SimSmith on the Raspberry Pi. SimSmith is a Java program,…

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..

Posted on 13th May 202118th April 2023 by Mike Richards — 28 Comments

NanoVNA Saver on the Raspberry Pi

UPDATED 14-April 2023: The latest version of NanoVNA Saver requires PyQt6 which is not yet available for the Pi. I will update these instructions when it’s available.NanoVNA Saver is an excellent package that provides a host of useful features for owners of the NanoVNA V1 and V2. When looking around the Internet for Pi installation…

UPDATED 14-April 2023: The latest version of NanoVNA Saver requires PyQt6 which is not yet available for the Pi. I will update these instructions when it’s available. NanoVNA Saver is an excellent package that provides a host of useful features[…]Click to read more..