This RFI starts up each evening. It's not present during the afternoon and
usually doesn't start until well after dark I did notice it earlier this
morning well after sunrise. It was gone later in the day. It starts as several
narrow "humps" walking across the panadapter from lower to higher frequency.
They appear at first as almost horizontal sweep lines on the waterfall
gradually curving upward to vertical and after 20 or 30 seconds settling into
the pattern seen below. I can't seem to correlate it to anything in the house.
I suspected my neighbor's energy saving, variable speed pool pump because the
startup pattern makes me think it's rotating machinery. However, I think his
pump was running this afternoon while the rfi was NOT present, and vice versa
this evening. It's most pronounced on a vertical, I can see it a little on an
inverted vee. It extends above and below the 40 meter band, but I don't see it
on 80M or on 30M. Any idea where to start looking?
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