@dlang
Several sources point out that radar is very specific about how they "pulse".
It is a disappointment to find out there is no rhyme or reason to the detection method.
@davidc502,
The radar detection on the WRT1x00 series is implemented in the Marwell wireless chipset firmware. not in the mac80211 driver.
Since the firmware is 'closed source', who knows what kind of algorithm or detection method is used, but it seems something is not 100% right with their implementation.
There are just too many 'false positives'.