marxy's musing on technology

The applications of AI (machine learning) to radio are fascinating me at the moment. This is a simple experiment where I recorded some SSB a...

Check out this trailer for a program covering the history of computers, and microcomputers, in Australia. So many memories for me. "An ...

FreeDV , which bundles up the very low bit rate voice codec, Codec2 and an Orthogonal Frequency Division Multiplexed (OFDM) modem that can s...

Scammers are a real threat to us all. Australians lost billions of dollars last year. Nightlife Tech Guru Peter Marks, a software developer ...

Lots of useful parts for sale at good prices. I bought PL-259 crimp connectors for $3 each instead of the much higher prices I see them onli...

The Apple Vision Pro is a product they've been working towards for many years. The software progress has been public, in the form of ARK...

When I wanted to calculate something in the radio shack, I used to google for the formula and then execute it on a scientific calculator. Ju...

I generally use superglued on MePads from QRPme but burn through them at a great rate. Recently I had a go at cutting insulating tracks on ...

Peter Marks, software developer and technology commentator from Access Informatics joined Dom Knight with all the latest in tech news. It...

Recently I've been working on an AM transmitter for 40m. It occurred to me that FM should be much simpler to produce. I had ordered some...

A new online safety code of practice to protect children online has been released by the Digital Industry Group for public consultation. The...

The (now ABC) station called 3LO turned 100 last week. The ABC pulled out all the stops to put on a wonderful live broadcast followed by an ...

Today I joined some other amateur radio operators at the Comms Connect trade show at the Melbourne Exhibition Centre. Check in was efficien...

As a refreshment after all my recent home brew activity I built a nice little direct conversion receiver kit from QRP Kits aka "Pacifi...

I was a guest on ABC radio's "Nightlife" program talking about the amazing "audio overview" feature of Google's ...

Prototyping small circuits where it's not worth designing and etching a board can be done in many ways. I've used "ugly" (...

The home brew AM transmitter on the bench at the moment has thrown up the issue of either low or over modulation from my mic audio. Some tim...

For too many weeks I've been tinkering with a small transmitter for the active AM frequency of 7.125Mhz and just now I called CQ and was...

Ross, EX0AA, is working to do WSPR on very low frequencies and asked for some help generating WSPR tones as audio directly. There are severa...

Thanks to Lindsay, VK3GX, for bringing this wonderful BBC program to my attention. The team shows the development of radio and makes various...