marxy's musing on technology
A bloke with too many hobbies.
Tuesday, October 12, 2021
On ABC RN's Download This Show
This week I'm a guest on Marc Fennell's ABC RN "Download This Show" . "We’ll soon be walking around with them and fla...
uSDX tiny multi-band transceiver
The uSDX is not a great receiver or transmitter but it is usable and amazingly small. I bought mine through AliExpress . "uSDR uSDX 10/...
Friday, October 01, 2021
It's a good idea to update the Arduino IDE
There's some tribal knowledge around about Arduino IDE (and library) versions. I've heard from people that a certain version is the ...
Wednesday, September 29, 2021
Dallas, VK3EB's HF bush antenna
Dallas, like many of us, doesn't have much scope for a decent HF antenna at home so he has perfected the art of putting up antennas in t...
Tuesday, September 28, 2021
Facebook fake account scam promising "Mega Bonus"
This morning a friend said hello on Facebook messenger. The message said that we hadn't talked before - which was believable as we norma...
Tuesday, September 21, 2021
Resistive tap built with sharpie PCB etch
I'm keen not to burn out the input to the spectrum analyser. It's 50 ohms in with a maximum of +30dBm. The solution is to transmit i...
Sunday, September 12, 2021
An OWON XSA815-TG Spectrum Analyser for the bench
I've wanted to try a spectrum analyser for many years but they've been prohibitively expensive. Just as oscilloscopes have come down...
Tuesday, September 07, 2021
Simple WSPR Beacon using Si5351 and ESP8266 NTP for time sync
Wanting to play with a simple WSPR Beacon in the house where I can't receive GPS for time synchronisation, I've hacked together a be...
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