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May 2021 Scout Communicator badge lesson plan
Work with Scouts on the Communicator badge was suggested by a Foundation licensee, Rani, M7KAU, who by chance told Troop Leader Phil Reed about her new hobby. WVARS member Andy, G0SFJ, created a lesson plan based on the Communicator badge syllabus. Download files (429KB .pdf)
April 2021 Capacitance Meter mk II files
These files contain the .hex and source files for the ‘Capacitance Meter mk II’ by Alister Watt, G3ZBU, published in the April 2021 RadCom. Please see the ReadMe.txt file (inside the .zip) for further information. Download files (431KB ZIP folder)
September 2020 Monitor for SG-Lab 20W 2.4GHz PA
This download contains files to support the Monitor for SG-Lab 20W 2.4GHz PA by DC5ZM published in the September 2020 edition of RadCom. The files include the Arduino sketch, PCB overlays and foil patterns, Eagle files, details of the alternative version based on the Arduino Nano, and updated information on the directional coupler calibration. Download […]
June 2020 HF power meter with optional loop controller
This page contains a link to download a 115kB .zip containing the PCB Gerber files, a spreadsheet with the bill of materials, and the Arduino sketch required for the HF power meter with optional magnetic loop controller by Kevin Ayriss, G8MXV, published in the June 2020 edition of RadCom. Please refer any enquiries about these […]
March 2019 Temperature Test Chamber supplementary files
This page contains a link to the supplementary files for the Temperature Test Chamber article by Bob F. Burns, G3OOU, published in the March 2019 edition of RadCom. The ZIP file contains— A readme.txt file identifying the contents A PDF version of the outline case design (Figure 2) that you can read better than the […]
December 2018 Diode Tester article correction
In the December 2018 edition of RadCom we published the Multi-Mode Diode Tester article by Dave Ellis, G4AJY. Unfortunately some gremlins crept into the circuit diagram, meaning that it wouldn’t work as intended if built as shown. The main problems were the 1M resistor R4 and the labelling of switch Sw1b.. R4 was incorrectly shown […]
