Frequent lightning on the morning of 4/27/16 dominated my reception on 3740 kHz (and all of the 75 m band). The 24-hour map of lightning below shows where the activity was located. Yellow represents data that is up to 15 minutes old, relative to 0535 CDT. Orange is up to 2 hours old, and red through blue represent data that is 2 to 24 hours old.
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| From LightningMaps.org - Click to enlarge. |
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My SDR receiver display below shows that static crashes were very frequent and very broad-banded.The top part of the display is the panadapter format, with signal level represented on the vertical scale and frequency (kHz) on the horizontal scale. The bottom part of the display is the waterfall format, with time progressing vertically down the display, frequency on the horizontal scale, and average signal level represented by color.
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| Panafall display at 0623 CDT - click to enlarge |
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Compare this display with the one in my
earlier post that showed less frequent lightning activity compared with a nice strong signal from W4PRE.
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