4/17/2026
Today, we installed the Weak Signal Propagation Reporter (WSPR) device to the Tennadyne T11 log periodic antenna by the reactor! This device is simply a transmitter that outputs a signal every 2 minutes, which is picked up by receivers all around the world. The received signals can then be viewed on wspr.rocks in the form of a list or map, as well as several other views.
We’ve already hit many European as well as North American spots!
Currently, the WSPR device is transmitting with 200 mW on 20, 17, 15, 12, 10 and 6 meters, which aligns with the Tennadyne antenna’s range of 13 – 55 MHz. The goal moving forward is to track propagation of the bands over time and observe the effect of the solar cycle and other factors. Also, we’ll look into rotating the antenna to test propagation in different directions.
To check real-time propagation, go to wspr.rocks and type “W4UVA” into the TX call textbox. Then click Search and click map to view the map. Clicking table will show you each contact that was made. You can sort by frequency, SNR, or distance in km (column “k”).
