Tropospheric ducting today

Looks like we’re getting some good weather for extended range. I’ve had a few messages here in Austin From Monterrey, Mexico.
Where the blue line goes down to zero on the left side of the graph is when I removed an amplifier. I got better S/N ratio without the amp. But I had to turn the gain up from about 4 to about 49. There’s a 36’ cable between the antenna and the dongle.

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