marxy's musing on technology

I've always felt pretty safe from malware by running macOS but recently three people I know have found that they have unwanted software ...

Recently I purchased two ESP32-CAM modules from Banggood for under AU$10 each. There is lots of help on line including the excellent Random...

After reading a glowing review of the low cost MLA-30 active receive loop antenna, I ordered one from Aliexpress for just AU$55 . Here are ...

Thanks to talented friend  Aidan Roberts , I've just listened to a fascinating podcast series from the BBC World Service called "...

LoRa is a fascinating radio system for low power but long range digital data communications. Low cost transceivers claim a range of 15km. J...

The long awaited review of Australian Broadcasting Services in the Asia Pacific has been released and is available here . The 193 page...

This is a followup to an earlier post where I used an ESP8266 to connect to Wifi and call a JSON web service on my Fronius inverter to sho...

Low Earth Orbit (LEO) satellites are cheaper to launch than geostationary satellites and, with modern manufacturing, can be cheap enough to ...

There's a great documentary made in 2016 called " Zero Days " that I watched on the recommendation of a daughter. It investi...

Kevin, VK2KB, kindly invited me to stay on a friend's property near Goulburn, south of Sydney. On a hill near the homestead, Kevin had...

John, VK2ASU, tipped me off about these boards. It's a little FM broadcast transmitter that can be controlled via two wire interface f...

A lovely day for a ham radio meetup. Great to see everyone and Dural is looking great with the amazing new antenna tower now in use. Today...

Ashhar Farhan, VU2ESE, creator of the low cost, excellent performance for the money uBitx and Bitx40, has a new gadget. A flexible test inst...

Last time I upgraded iPhones I decided to lease the iPhone X rather than buying outright. This spreads the expense out over two years. Af...

On recent drive across Australia I was struck by the amount of shortwave broadcasting from China that could be heard. There is some data ...