20 February, 2024

Svalbard, JW1ITS, in International WSPR Beacon Project

1000 spots over the last 2-3 days of reception.
Image from WSPR Rocks.
This month a new receiver station in the International WSPR Beacon Project was established near Longyearbyen, Svalbard. It is located at the Kjell Henriksen Observatory, at 520 m above sea level. This is a nice location for reception, but it is a tough place for outdoor antennas.

The receiver is an Airspy HF+ Discovery and software is running on a Raspberry Pi 4 and it is intended to run continuously 24/7. The receiver receives WSPR which was conceived by Nobel laureate Joe Taylor, K1JT. WSPR is run in a Coordinated band hopping schedule from 3.5 - 28 MHz, i.e. each frequency is received every 20 minutes.

11 February, 2024

Better accuracy for the Multi Face GPS Clock

Version 2.1.0 of the clock now implements interrupt-driven setting of the second. It needs the Pulse-per-second PPS output from a GPS for that. The result is that the clock is more accurate as it now changes seconds a few hundred milliseconds earlier and aligns perfectly with other clocks I have.

It is optional whether one wants to use this feature or not. If not, the PPS flag needs to be set to 0 in the Setup menu, otherwise the clock will wait indefinitely for a pulse that never comes. In the image to the right the PPS flag is set to "1".

08 February, 2024

My new HamClock

I finally got the hardware for the HamClock and installed the free software. It really looks like a labor of love on the part of its creator, Elwood Downey, WBØOEW.

I show the ISS footprint, for the occasional APRS signal from/to it, and DX cluster reports from zones near where I live.