1000 spots over the last 2-3 days of reception. Image from WSPR Rocks. |
LA3ZA Radio & Electronics
20 February, 2024
Svalbard, JW1ITS, in International WSPR Beacon Project
11 February, 2024
Better accuracy for the Multi Face GPS Clock
08 February, 2024
My new HamClock
I show the ISS footprint, for the occasional APRS signal from/to it, and DX cluster reports from zones near where I live.
26 December, 2023
10 bargraphs and progressbars for the LCD of the Arduino
There is a total of 10 different bars and here are the two which are used in the upcoming version of the Multi face GPS Clock.
The main design principle is that no more than 8 custom characters should be required per bar. That means that the custom character set is uploaded just once for each bar, giving much less probability for wearing out the LCD character memory with its presumed finite limit on the number of write cycles.
07 August, 2023
Multi Face GPS Clock ver 2.0 setup
21 May, 2023
EA8/LA3ZA April 2023
The best bands were 30 m (29%) and in particular 10 m (65%) with a lot of contacts across the Atlantic ocean as the picture shows. In total 62 different entities/countries were contacted.
QSL via Logbook of the World.
28 April, 2023
3 tips for not blowing the finals of the QDX transceiver
But first, I do actually have experience in blowing the finals. That happended under testing prior to leaving, and all it took was 9.5 Volts for my 9 V build and what I thought was a dummy load, but which might have been an open circuit load. One BS170 developed a short between drain and gate with the result that 9.5 Volts was passed directly into the outputs of the driver IC5, 74ACT08, so IC5 blew as well.
My three tips for avoiding such failures are:
18 April, 2023
Clock cycles through chemical elements
This is screen number 39 for this clock, all of them selectable by rotating a rotary encoder. The project, with Arduino Mega hardware and software is documented on Github, where the current release is v.1.6.0 (2023-04-14).
The display also shows the full name for the element corresponding to the second, as shown above for element 3 which is Lithium. It is located in group (column) 1 and period (row) 2.