Home

QRA locator map updated

Details: Last Updated: 07 January 2023; Hits: 497

The last QRA locator map no longer uses any API functions or Google maps.
From now on, the Leaflet API and free basemaps are used.
New features have been added, such as:
- search by QRA locator on 6 or 8 characters.
- search by address, location.
- a tool for measuring distance and azimuth

K3NG Winkeyer

Details: Last Updated: 20 December 2022; Hits: 713

KISS (Keep It Simply Stupid) principle for the realization and parameter setting of this Winkey CW keyer using an Arduino Nano and the Keyer software by K3NG.
The use of a solder test board allows to make a quick assembly.
This Winkeyer is intended to work with logbooks and/or contest management software.

Fan speed controller board setting

Details: Last Updated: 16 April 2023; Hits: 10499

For one of my projects, I recently bought on Aliexpress (see links at end of article) a Chinese fan speed controller board.
I was struggling to understand how this board can be set, the instructions found on Aliexpress being nearly of no help. The Chinese to English translation is.... :-)
Here is what I found ...

RDZ_TTGO radiosonde receiver use

Details: Last Updated: 14 April 2023; Hits: 3669

After having build a radiosonde receiver using the DL9RDZ software and a TTGO module, here is a short article on its use in the field.
Some configurations and explanations.
Refer to the previous Installation Installation rdz_ttgo_sonde.

Power/SWR meter à la PD0LEW

Details: Last Updated: 26 June 2022; Hits: 3440

Wishing to replace my good old trusty BIRD 43 Watt-meter, I prospected a little on the Internet and found the description of an open source project for a Watt-meter which corresponded perfectly to my needs.
This is a fork of the version made by TF3LJ, and developed by PD0LEW. A new hardware version was subsequently developed by WA2T. I chose the version with an OLED display, but there are versions with touch-sensitive TFT displays.