marxy's musing on technology
A bloke with too many hobbies.
Wednesday, November 22, 2023
Adapting Ozito battery for ham radio power
We have quite a few low cost Ozito (Bunnings) battery powered tools around here even though I've been transitioning to Makita. The batte...
Talking tech on ABC Radio
After contributing technology commentary for many years on ABC radio, I've had a break this year but now I'm back. This week I did a...
Sunday, November 12, 2023
Rosebud Radiofest excellent again this year
Like 12 months ago, I joined Richard, VK3LRJ in the journey down to the Rosebud Radiofest. It seemed bigger than last year. Certainly there ...
Friday, November 10, 2023
FreeDV 700e contact with VK3RV
It's been a while since I've fired up FreeDV . For some reason there isn't a pre-made build for Linux so I grabbed the source co...
Sunday, October 15, 2023
Latest OpenWebRX on Raspberry Pi 4 excellent
With a little travel on the agenda soon, I thought I'd run up OpenWebRX on a Raspberry Pi 4 in the shack. The simplest approach is to d...
Friday, October 13, 2023
Put up a dipole for 10m - a very active band
Several people have commented that the 10m (28MHz) band is very active at the moment. Compared to my 80m dipole, a little dipole for 10m was...
Monday, September 25, 2023
Solar shack battery monitor mark 2 - simpler is better
After the failure of my ESP32 web server to monitor battery voltage I reverted back to a simple system with an Arduino Nano reading analog v...
Sunday, September 24, 2023
Solar shack battery monitor mark 1 - failed project
The radios in my shack are now powered by a 12V flooded deep cycle lead acid battery with 105Ah capacity charged from a 100W solar panel. So...
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