A blog about amateur radio - particularly data/qrp/digital
JT65 transmissions in the 30m band plotted in three dimensions. To the right is time, to the left is frequency and up is "energy"
I do like representations like this.
Plotted with speclab - which is wonderful. And free.
Great post. I'm going through a few of these issues as well..Here is my webpage more about the author - ,