Today, after returning home, I checked hamspots.net and spots from VK7BO were again there, so I decided to start sending CQ’s, hoping to get a number of samples, to compare with yesterday.
The opening peaked -7 dB at best, but this time, a number of -7’s were recorded. Unfortunately, hamspots only showed the last 250 spots, so it took a bit of creativity with filters to get the spot data together. I may miss a few, but the overall picture is clear.
JT65 signal strength (SNR) on Nov 11, 2016 (time UTC)
The signal strength dropped quicker this time. Yesterday, the signal was lost a bit after 21:00 and decayed more slowly.
The peak was again around 19:30 to 19:40. From then on, the SNR remained fairly constant before it started to drop. In about a quarter of an hour, the signal strength decayed from about 12 to -19 and was lost after that.
The next days, I will dig a bit deeper and want to combine the two charts, to be able to compare them at a glance.