marxy's musing on technology
A bloke with too many hobbies.
Tuesday, March 31, 2020
Class E PA for WSPR with home brew variometer in the antenna coupler
Ross, VK1UN and EX0AA, is a frequent traveller and likes to get on air with WSPR under challenging conditions including using stealthy en...
Saturday, March 28, 2020
ARNSW Home Brew Group meeting via video conference
With our normal Dural meeting off this month due to the COVID-19 pandemic, we moved online and had a group meeting using Skype. It went pret...
Tuesday, March 17, 2020
ARNSW Home Brew group & Trash and Treasure meetings suspended due to COVID-19
Today I heard from Mark Blackmore and Peter O'Connell that physical meetings at Dural NSW of the Amateur Radio NSW Home Brew Group a...
Saturday, March 14, 2020
Radio Australia Shortwave broadcast antennas in use again!
This weekend there is a special event under the callsign VI3RA where amateurs are able to use the amazing antenna array that used to be us...
Thursday, March 12, 2020
Ham Radio on a Chromebook?
Chromebooks are generally low cost, low spec laptops that run a simpler operating system than Windows, Macs or Linux machines. As there’s le...
Monday, March 09, 2020
Enjoyed the 48th Model Railway Exhibition at Forestville
One thing I'll definitely miss as we move away from this area is the annual model rail exhibition that is just up the road. Here's a...
Tiny toaster ovens are the best ovens
As part of the downsizing project here we threw out or sold a lot of things. Our old toaster oven had been damaged by me cleaning it with ...
Wednesday, March 04, 2020
How to see LoRa on an RTL-SDR waterfall
I've tried to see the LoRa chirps in the past but they were always too quick. John, VK2ASU, has figured out how to slow down the chirps ...
Decoding a Digitech Wireless LCD Thermometer
Just picked up a AU$20 indoor/outdoor wireless thermometer from Jaycar. It mentions on the back that it uses 433.9MHz so I connected an RT...
View web version