marxy's musing on technology

There's a very low cost CW transceiver for 40m available out of China on ebay dubbed "frog sounds". For just $19 including ...

Google has done such a great job with Google photos that it puts Apple's equivalent to shame. Apple has had face identification for som...

Marc Fennell does everything on this show, producer, presenter, interviewer, editor, music mixer and talent wrangler. All credit to the new ...

Listening to the marvellous Soldersmoke podcast I learned of these serial interface boards for driving an LCD display using just two pins o...

Very excited this week when the SmartMic 1000 arrived. This is a FreeDV digital voice codec in a very nice box. It's designed so you ca...

It's tough putting up a decent antenna for 80m. The sheer length involved excludes many amateurs without large blocks of land. My shack ...

For my birthday I got to do whatever I wanted and of course a visit to the Mount Stromlo observatory in Canberra was top of the list. It...

I'm so sad to mark the death of my beloved step-brother David Crooks. A wonderful man and dear friend. Last Thursday he was looking...

A new build from parts ordered from China. This time I'm using the excellent OpenPilot flight controller. Here's an early flight in ...

The weather wasn't great for the big feature of the Wyong field day, the car boot sale. The ARNSW Home Brew group had a great display a...

The tiny drones are great for indoors, but to carry cameras I needed something larger. A collection of parts and a 450mm frame was ordered a...

We are having too much fun at the office (during lunch breaks) flying tiny quadcopters. The best of them seems to be the Hubsan X4 . ...

Linuxconf this year in Aukland had a radio track where a low cost software defined radio receiver with some limited ability to transmit was...

Stephen, VK2BLQ, has suggested we try holding an HF vertical up with a drone but here's another idea for antenna installation in tall tr...

Recently there have been a constant stream of second hand Lenovo X201 laptops on ebay here. David Rowe mentioned when he visited that the X2...

Just saw this interesting gadget called a Skypi from RadWAV . It appears to be a 1W carrier transmitter for 40m that plugs in to the GP...

Inspired by the work of Peter, VK3YE , I visited the local hardware store to get bits for a 40m loop antenna. Purchased a 3m length of coppe...

This week an Ultimate3 QRSS/WSPR kit beacon kit I ordered arrived and this morning it was easily built. The display is super crisp. ...

I purchased a transistor tester kit from AliExpress a few weeks ago and it's a useful gadget for the workbench. Often when home brew ...

This week the ARNSW Home Brew Group was honoured with a visit from David Rowe, VK2DGR, who spoke about codec2, FreeDV, and the upcoming hard...