I took all the spots I had scraped, good and bad, during the
period 8/7 0000Z-1300Z and ran them through my script that
validates them against qrz.com. Attached is the output of the
"bad" ones.
There seems to be three types of calls:
balloons
ones that are obviously bad
ones that look like a valid call but qrz.com doesn't have them
in the database.
So using qrz.com provides guidance but not a definitive answer
and manual effort is required.
I'd welcome any help on validating the third category