marxy's musing on technology

Today I attended the Wyong Field Day . Once again I helped David Rowe on the FreeDV table and in between table duty had a look around. T...

A few years ago I bought a second hand Mid 2010 MacBook Air 11 as a standby machine. It came with a dead battery. A cheap Chinese replacemen...

The hotspot board I ordered via eBay for AU$60 arrived (I note the price has increased recently). It turns out to be labeled a Jumbo Spot r...

The DMR radio I ordered  for AU$127 just days ago arrived today. I thought this would be a place to leave notes for myself that might help...

Since getting back in to RTL-SDR for my recent foray into decoding DMR , I found that these are a very useful (and low cost) bit of gear. ...

Two good friends have recently had their Apple macOS machines infected with annoying malware and I'm pretty sure the vector was download...

Today we had a meeting of the home brew group out at ARNSW in Dural. The first surprise (to me) was the wonderful new tower that has been ...

It's not too hard to listen in to DMR digital radio traffic with just a low cost RTL-SDR dongle and some software. I can pick up the S...

My thanks to Bas over at the excellent PE4BAS ham radio weblog for his kind review of the recent updates to WSPR watch . He seems surp...

While re-modelling the interior of my tiny camper van I've become fascinated by the interior designs people come up with for these comp...

I've just stumbled across a real gem called Low-Tech Magazine . It's a rich collection of stories that provide evidence, if we nee...

It's pretty hot here this week. Today it's 32C outside, but inside it's a very pleasant 24C. The wonderful thing is that the h...

A bit of feedback from some WSPR Watch users has prompted a bit of work on the app. Recent updates have added and then improved the graph...

Intrigued by the ZachTek pocket WSPR transmitter Peter, VK3YE, has reviewed , I wondered if I could get a simple beacon going using just an...

There's a new version of the iOS WSPR Watch app coming out today. Encouraged by some enthusiastic WSPR watchers, I've done some wor...

The Department of Communications and the Arts' Review of Australian Broadcasting in the Asia Pacific has published the 433 formal sub...

I've tinkered with machine learning in the past using TensorFlow but wanted to try Apple's tools which are extremely simple to use b...

After visiting Dorrigo several times I finally remembered to drop in and purchase (for $1) a copy of the hot-metal typeset "Don Dorrigo...